Among the highest-traffic pages on the web aren’t articles. They’re instruments. A grade calculator. A file converter. A color-palette generator. An e mail outreach template. Each solutions a search {that a} weblog put up by no means may, as a result of the searcher doesn’t need to learn, they need to do.
That’s the free-tools search engine optimisation technique: as an alternative of writing one other information, you construct a small, genuinely useful gizmo, put it on a web page, and let it rank for a question that has enormous demand and virtually no good competitors. Carried out proper, one instrument can rank for a whole bunch of key phrases and maintain incomes site visitors for years.
We all know this works as a result of we do it ourselves. Our /writing-tools/ subfolder launched from scratch in mid-2023, climbed to almost one million US natural visits a month at its peak, and now holds regular within the a whole bunch of 1000’s, all from free instruments constructed to reply particular searches. Our free search engine optimisation instruments (key phrase generator, backlink checker, site visitors checker) inform the identical story: they’re constantly amongst our highest-traffic pages.
Estimated US natural site visitors to our /writing-tools/ subfolder (Ahrefs Website Explorer).
There’s a second purpose to care about this proper now: instruments are unusually resilient to AI.
Informational written content material is precisely what AI Overviews, AI Mode, and ChatGPT are greatest at synthesising, and a great chunk of the site visitors that used to land on how-to articles is now being answered contained in the AI response as an alternative. A instrument is far more durable to summarise out of existence. AI Overviews can describe find out how to convert a file or calculate a margin, however it may possibly’t hand the person the working converter or the interactive calculator.
The catch was once that constructing instruments was costly. It isn’t anymore. With Letaido or ChatGPT you may spin up a working calculator, converter, or generator in a day, so the bottleneck is now not engineering, it’s understanding which instrument to construct. That’s the place Ahrefs comes in.
This window might not keep open without end: as instruments get trivially simple for everybody to construct, the sting will slim. However for now there’s an actual alternative to construct sturdy search site visitors with high-quality free instruments made with AI.
Construct your individual free instruments technique with Ahrefs and Letaido
We’ve constructed tons of distinctive options that will help you generate natural site visitors with free instruments:
- Matching Phrases report – pulls each actual search variation of a seed sample (e.g. “calculator,” “generator,” “converter,” “template”)
- Key phrase Problem (KD) filter – set to ≤30, paired with lowest Area Score (DR) within the SERP, to exclude phrases dominated by high-authority websites and floor realistically rankable ones
- Class filter – narrows Matching Phrases outcomes to a particular sample sort, so that you’re not sifting by irrelevant variations
- SERP Overview + Web page Varieties column – reveals what’s truly rating, so you may rapidly spot when web page one is skinny instrument pages (winnable) vs. long-form articles (not a instrument alternative)
And now, you should utilize Letaido by Ahrefs to construct and deploy any free instrument from a plain-language immediate, producing a working, self-contained web page in a single move without having a developer.
A calculator is a instrument that takes a number of inputs and returns a quantity the searcher wants. Somebody varieties “margin calculator”, enters their value and sale value, and will get their revenue margin immediately, no article required.
Omni Calculator reveals how far this technique can go. It’s not a media model or a SaaS with a giant content material workforce, it’s a library of 1000’s of single-purpose calculators, each a web page focusing on a particular “calculator” search. Grade calculators, finance calculators, well being calculators, unit conversions. Every web page does one job, and collectively they pull in tens of millions of US visits a month from search.
Omni Calculator’s estimated US natural site visitors (Ahrefs Website Explorer).
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| omnicalculator.com/different/test-grade | take a look at grade calculator | 5,900 | 61,086 |
| omnicalculator.com/finance/annual-income | annual earnings | 81,000 | 50,825 |
| omnicalculator.com/finance/margin | margin calculator | 55,000 | 49,169 |
| omnicalculator.com/finance/salary-to-hourly | wage to hourly calculator | 42,000 | 45,940 |
You don’t need to be a pure-play calculator website to make use of this.
Gusto is payroll and HR software program for small companies, not a calculator website, however its free hourly paycheck calculator pulls round 17,800 US visits a month, and its wage model one other 8,000. Each a type of guests is a small-business proprietor understanding what to pay somebody, which is precisely who Gusto desires working payroll by its product. The calculator solutions the query at no cost, and the software program is the plain subsequent step.
gusto.com/sources/calculators/payroll/hourly-paycheck-calculator estimated US natural site visitors (Ahrefs Website Explorer).
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| gusto.com/sources/calculators/payroll/hourly-paycheck-calculator | wage calculator | 17,000 | 17,776 |
And it really works on the high finish too. Shopify runs an entire /instruments/ hub of free calculators and mills as one channel amongst many. Its profit-margin calculator peaked above 20,000 US visits a month and nonetheless pulls a number of thousand right now, each one among them a service provider weighing up their pricing, which is precisely who Shopify desires promoting on its platform. Even a web page previous its peak retains introducing the product to the best folks for free.
shopify.com/instruments/profit-margin-calculator estimated US natural site visitors (Ahrefs Website Explorer).
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| shopify.com/instruments/profit-margin-calculator | margin calculator | 55,000 | 4,550 |
Calculator key phrase alternatives
The plain head phrases have enormous search quantity, however their Key phrase Problem is 80+ and the outcomes are owned by massive manufacturers. You most likely received’t rank for these (not less than not proper away):
| Instance key phrase | Area of interest | Quantity | KD | Site visitors Potential |
|---|---|---|---|---|
| mortgage calculator | Actual property / fintech | 2,220,000 | 81 | 1,390,000 |
| calorie calculator | Well being / health | 868,000 | 86 | 717,000 |
| gpa calculator | Schooling | 550,000 | 54 | 695,000 |
| paycheck calculator | HR / payroll | 378,000 | 72 | 991,000 |
The winnable key phrases are the area of interest ones. Search quantity is decrease, however so is issue (typically single digits), and Site visitors Potential stays excessive. Discover the chance closest to your area of interest, then verify whether or not the equal key phrase exists on your personal viewers:
| Instance key phrase | Area of interest | Quantity | KD | Site visitors Potential |
|---|---|---|---|---|
| amazon fba calculator | Ecommerce sellers | 4,800 | 20 | 40,000 |
| deck materials calculator | Contractors / decking | 1,200 | 9 | 26,000 |
| roof pitch calculator | Roofing | 11,000 | 13 | 6,700 |
| etsy payment calculator | Etsy sellers | 2,000 | 7 | 4,000 |
| twitch bits to usd | Streamers | 1,500 | 0 | 2,900 |
| tattoo value calculator | Tattoo studios | 350 | 1 | 1,700 |
To search out your individual, paste these seed patterns into Key phrases Explorer (Matching phrases) and swap the bracketed half on your area of interest: [thing] calculator, [thing] value calculator, [thing] value calculator, how a lot [thing], what number of [thing], [thing] estimator, [thing] dimension calculator, [metric] to [metric], [thing] per [unit], [thing] financial savings calculator.
A converter modifications one thing from one format into one other. Somebody searches “mp4 to mp3”, uploads a video file, and downloads the audio; the instrument does the one job they got here for.
FreeConvert went from round 380K to over 1.5M US natural visits a month in 5 years on the again of “convert X to Y” searches: video, picture, and doc converters plus compressors. Each format pair is its personal touchdown web page, and there’s no scarcity of demand as a result of folks convert recordsdata always and infrequently bear in mind which instrument they used final.
FreeConvert’s estimated US natural site visitors (Ahrefs Website Explorer).
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| freeconvert.com/video-compressor | file compressor | 348,000 | 259,715 |
| freeconvert.com/mp4-to-mp3 | mp3 converter | 263,000 | 97,330 |
| freeconvert.com/convert/video-to-mp3 | video to mp3 | 64,000 | 79,809 |
| freeconvert.com/heic-to-jpg | heic to jpg | 207,000 | 44,791 |
You don’t have to be a converter website both.
Clockify is time-tracking software program, however its free military-time converter pulls round 31,200 US visits a month, and its decimal-hours converter one other 2,400. Each are the identical thought utilized to Clockify’s personal world: the folks changing time codecs are the individuals who may observe time in its app. The converter does the one job the searcher got here for, and the product sits proper there after they’re achieved.
clockify.me/military-time-converter estimated US natural site visitors (Ahrefs Website Explorer).
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| clockify.me/military-time-converter | 2200 army time | 23,000 | 31,391 |
Adobe sells Acrobat Professional, however its free on-line converters are a large top-of-funnel tactic: the PDF-to-Phrase web page alone pulls round 385,000 US visits a month. Every free conversion nudges the person slightly nearer to the paid subscription.
adobe.com/acrobat/on-line/pdf-to-word.html estimated US natural site visitors (Ahrefs Website Explorer).
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| adobe.com/acrobat/on-line/pdf-to-word.html | pdf to phrase | 183,000 | 402,101 |
Converter key phrase alternatives
The frequent format pairs have massive quantity, however they’re taken by billion-visit websites like FreeConvert at KD 80+:
| Instance key phrase | Area of interest | Quantity | KD | Site visitors Potential |
|---|---|---|---|---|
| foreign money converter | Finance / journey | 459,000 | 84 | 250,000 |
| celsius to fahrenheit | Science / on a regular basis | 330,000 | 23 | 82,000 |
| heic to jpg | Images | 222,000 | 31 | 491,000 |
| pdf to phrase | Paperwork / workplace | 220,000 | 81 | 243,000 |
The extra winnable key phrases are the format pairs particular to 1 occupation, the place issue drops to single digits:
| Instance key phrase | Area of interest | Quantity | KD | Site visitors Potential |
|---|---|---|---|---|
| pdf financial institution assertion to csv | Accountancy / bookkeeping | 90 | 5 | 3,300 |
| psd to png | Graphic design | 2,800 | 4 | 3,500 |
| dwg to pdf | Structure / CAD | 1,500 | 12 | 4,600 |
| mp3 to midi | Music manufacturing | 5,700 | 10 | 8,900 |
| stl to gcode | 3D printing | 1,100 | 1 | 1,500 |
| yaml to json | Software program / DevOps | 2,900 | 1 | 2,200 |
To search out your individual, paste these seed patterns into Key phrases Explorer (Matching phrases) and swap the bracketed half on your area of interest: [niche format] to [niche format], convert [format] to [format], [pro file] to csv, [pro file] to excel, [format] to pdf, [format] to textual content, [format] to picture, [proprietary format] converter, [format] converter on-line, batch [format] converter.
A generator creates one thing new from a click on or a immediate. Somebody searches “colour palette generator”, hits the button, and will get a ready-to-use set of colors they will copy or export.
Coolors is a colour-palette generator that grew into an entire suite of design mills: palettes, fonts, gradients, distinction checkers. It almost doubled its US natural site visitors over 5 years by rating #1 for “colour palette generator”, then including a web page for every adjoining “generator” and “maker” question it may serve.
Coolors’ estimated US natural site visitors (Ahrefs Website Explorer).
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| coolors.co | colour palette generator | 84,000 | 340,519 |
| coolors.co/font-generator | font generator | 751,000 | 75,954 |
| coolors.co/image-picker | colour palette from picture | 10,000 | 10,334 |
| coolors.co/contrast-checker | distinction checker | 7,000 | 6,640 |
Kapwing is a video-editing instrument, however quite a lot of its search site visitors comes from small free mills: its meme maker pulls round 10,500 US visits a month and its subtitle generator one other 5,800. None of these pages promote the editor straight, however the folks making memes and subtitles are the individuals who edit video, so every free generator is an inexpensive solution to put the product in entrance of the best viewers.
kapwing.com/meme-maker estimated US natural site visitors (Ahrefs Website Explorer). Site visitors can wane, however a fading instrument web page nonetheless pulls way over zero.
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| kapwing.com/meme-maker | meme generator | 305,000 | 10,497 |
HubSpot does the identical at scale. It sells CRM and advertising software program, but one among its best-performing pages is a free e mail signature generator pulling round 55,000 US visits a month. On the floor, it has nothing to do with the core product, however the individuals who want an e mail signature are entrepreneurs and salespeople, precisely who HubSpot desires in its funnel. A generator is an inexpensive, evergreen entrance door.
hubspot.com/email-signature-generator estimated US natural site visitors (Ahrefs Website Explorer).
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| hubspot.com/email-signature-generator | e mail signature | 43,000 | 54,653 |
Generator key phrase alternatives
The pinnacle phrases have massive quantity however excessive issue:
| Instance key phrase | Area of interest | Quantity | KD | Site visitors Potential |
|---|---|---|---|---|
| qr code generator | Advertising and marketing / retail | 776,000 | 90 | 426,000 |
| password generator | Safety / tech | 300,000 | 82 | 505,000 |
| bill generator | Finance / SMB | 183,000 | 63 | 371,000 |
| enterprise identify generator | Entrepreneurship | 51,000 | 80 | 243,000 |
The winnable key phrases are the area of interest ones: smaller quantity, low issue, robust Site visitors Potential. Discover the row closest to your area of interest, then verify whether or not the equal exists on your personal viewers:
| Instance key phrase | Area of interest | Quantity | KD | Site visitors Potential |
|---|---|---|---|---|
| band identify generator | Musicians | 11,000 | 7 | 14,000 |
| podcast identify generator | Podcasters | 12,000 | 8 | 9,900 |
| d&d identify generator | Tabletop gaming | 2,100 | 14 | 18,000 |
| clan identify generator | Gaming | 2,300 | 5 | 4,200 |
| twitch panel maker | Streamers | 450 | 3 | 2,800 |
| meta description generator | search engine optimisation / advertising | 1,600 | 12 | 4,200 |
To search out your individual, paste these seed patterns into Key phrases Explorer (Matching phrases) and swap the bracketed half on your area of interest: [thing] generator, [thing] maker, [thing] creator, [thing] identify generator, [thing] username generator, random [thing] generator, free [thing] generator, ai [thing] generator, [thing] concepts generator, [thing] builder.
A template is a ready-made file the searcher can copy and fill in. Somebody searches “docs word template”, lands on the web page, and downloads a doc they will edit, no design work of their personal.
Templates are a bit totally different: most of them aren’t interactive instruments in any respect, only a web page plus a downloadable or editable file. Template.internet ranks for 1000’s of “template” queries (physician’s notes, obituaries, letters, calendars), every web page providing a ready-made file. It’s the lowest-effort model of this technique and nonetheless pulls round 700K US visits a month.
Template.internet’s estimated US natural site visitors (Ahrefs Website Explorer).
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| template.internet/doctor-note | docs word template | 8,600 | 36,173 |
| template.internet/signature-generator | signature generator | 55,000 | 6,631 |
| template.internet/obituary | obituary template | 22,000 | 5,478 |
| template.internet/letters/character | character reference letter | 6,300 | 5,288 |
Venngage is an infographic maker, and its /templates/ hub pulls round 11,000 US visits a month throughout a whole bunch of ready-made designs, from org charts to infographics. Every template ranks for its personal “template” question, fingers the searcher a free beginning design, then invitations them to edit it inside Venngage. The template is helpful by itself, and the product is the pure subsequent click on.
venngage.com/templates estimated US natural site visitors (Ahrefs Website Explorer).
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| venngage.com/templates | infographic template | 13,000 | 10,954 |
Canva runs the largest model of this. Its /templates/ hub pulls round 505,000 US visits a month, with sub-pages for every thing from budgets to assembly agendas to obituaries:
canva.com/templates estimated US natural site visitors (Ahrefs Website Explorer).
| Web page | Prime key phrase | Quantity | Site visitors/mo |
|---|---|---|---|
| canva.com/templates/ | canva templates | 20,000 | 508,826 |
Template key phrase alternatives
The generic head phrases have massive clusters of quantity however excessive issue:
| Instance key phrase | Area of interest | Quantity | KD | Site visitors Potential |
|---|---|---|---|---|
| resume template | Careers / HR | 195,000 | 68 | 424,000 |
| bill template | Finance / SMB | 111,000 | 43 | 80,000 |
| marketing strategy template | Entrepreneurship | 87,000 | 40 | 154,000 |
| price range template | Private finance | 28,000 | 45 | 145,000 |
Should you don’t need to go head-to-head with Canva (and few would), yow will discover loads of winnable key phrases: particular paperwork your occupation wants, with near-zero issue.
| Instance key phrase | Area of interest | Quantity | KD | Site visitors Potential |
|---|---|---|---|---|
| wedding ceremony seating chart template | Marriage ceremony planning | 1,900 | 7 | 11,000 |
| building estimate template | Development | 1,200 | 2 | 3,300 |
| pictures contract template | Images | 1,100 | 6 | 2,400 |
| podcast script template | Podcasters | 600 | 1 | 1,400 |
| actual property flyer template | Actual property | 350 | 8 | 1,600 |
| tattoo consent type template | Tattoo studios | 150 | 0 | 800 |
To search out your individual, paste these seed patterns into Key phrases Explorer (Matching phrases) and swap the bracketed half on your area of interest: [document] template, [document] instance, [document] format, [document] pattern, printable [document], free [document] template, editable [document] template, [document] template phrase, [document] template google docs, [document] guidelines.
The 4 classes look totally different, however the course of is similar for all of them: discover a winnable key phrase in Key phrases Explorer, construct the instrument with AI, then get it stay in your website. Right here it’s finish to finish.
1. Search seed key phrases with the Matching phrases report
Each instrument question follows an identical sample: a phrase that indicators the searcher desires to do one thing, not examine it. Search these seed phrases with a broad Matching phrases report, and Ahrefs returns each variation folks truly seek for:
| Class | Seed patterns to go looking |
|---|---|
| Calculators | [thing] calculator, [thing] value calculator, [thing] value calculator, how a lot [thing], what number of [thing], [thing] estimator, [thing] dimension calculator, [metric] to [metric], [thing] per [unit], [thing] financial savings calculator |
| Converters | [niche format] to [niche format], convert [format] to [format], [pro file] to csv, [pro file] to excel, [format] to pdf, [format] to textual content, [format] to picture, [proprietary format] converter, [format] converter on-line, batch [format] converter |
| Turbines | [thing] generator, [thing] maker, [thing] creator, [thing] identify generator, [thing] username generator, random [thing] generator, free [thing] generator, ai [thing] generator, [thing] concepts generator, [thing] builder |
| Templates | [document] template, [document] instance, [document] format, [document] pattern, printable [document], free [document] template, editable [document] template, [document] template phrase, [document] template google docs, [document] guidelines |
2. Filter for the winnable phrases
The pinnacle phrases (“mortgage calculator”, “qr code generator”) have the largest quantity, however they’re dominated by billion-visit websites you received’t outrank. The winnable key phrases sit a degree beneath them. Set a Key phrase Problem filter of roughly KD ≤ 30, add a Lowest DR filter to make sure that websites like yours seem in top-ranking positions, then kind by Site visitors Potential or Search quantity to floor low-difficulty phrases that also sit underneath a big mum or dad matter.
3. Use the Class filter to search out alternatives in your area of interest
Scan the outcomes for a time period your individual viewers would search: a deck materials calculator for a contractor instrument, a YAML-to-JSON converter for a developer product, a pictures contract template for a inventive platform. The very best alternatives are particular: smaller quantity, however near-zero issue and patrons who match your product.
You should use the Class filter to rapidly discover related alternatives on your particular area of interest:
4. Sanity-check the SERP
Click on into the SERP overview on your shortlisted key phrase. If the highest outcomes are skinny, single-purpose instrument pages moderately than deep guides, that’s your sign: a targeted instrument web page can win right here. If the page-one outcomes are all 3,000-word articles, the intent isn’t a instrument.
The Web page varieties column makes it very simple to verify which web page varieties rank greatest in any SERP:
5. Construct the instrument with AI
When you’ve discovered a key phrase value constructing for, you don’t want a developer to make the instrument itself. Describe precisely what it ought to do, then paste that into Letaido, ChatGPT, Claude, or any succesful mannequin.
A superb immediate accommodates the inputs, the outputs, and the on-page copy that helps it rank. Right here’s an actual one I used to construct a deck materials calculator, the area of interest time period from the Calculators part above:
Immediate: deck materials calculator
Construct me a single-page “deck materials calculator” as one self-contained HTML file. Inputs: deck size and width (in toes), the deck board width (in inches, default 5.5), the hole between boards (in inches, default 0.25), joist spacing (12, 16, or 24 inches), and an editable value per board. Outputs: the variety of deck boards wanted, whole linear toes of decking, the variety of joists, and an estimated supplies value. Present the working beneath every quantity so folks can see the way it’s calculated, not simply the ultimate whole. Make it quick and mobile-friendly, with a transparent title, a one-line explainer on the high, and no login or sign-up. Beneath the calculator, add a brief FAQ answering “how a lot decking do I want?” and “what number of deck boards per sq. foot?” so the web page can rank for these searches.
Right here’s what Letaido constructed from that immediate in a single move—a working calculator in a few minute, for $1.24:
The deck materials calculator Letaido generated from the immediate above — one move, ~1 minute, $1.24.
Swap the specifics on your personal key phrase. For a converter, ask for a paste-and-convert field; for a generator, ask for a “generate” button and a solution to copy the end result; for a template, ask for a fillable type plus a “obtain as PDF” button. Then iterate within the chat till it behaves the way in which you need.
6. Ship it to your website
That is the half that’s genuinely more durable than constructing the instrument, and it relies upon fully in your stack. The instrument AI fingers you is often a self-contained web page (HTML, CSS, and slightly JavaScript). Getting it stay and rating is the actual work:
- WordPress: embed the instrument with a customized HTML block or a plugin, or drop it by itself landing-page template. Preserve it on a clear, descriptive URL (e.g.
/instruments/deck-calculator/). - Webflow, Framer, or a website builder: use an embed/HTML element. Watch that the embed is crawlable and never hidden behind an iframe engines like google ignore.
- A customized or headless website (React, Subsequent.js, and many others.): your builders can drop the logic straight into an actual web page, which is greatest for velocity and search engine optimisation however wants engineering time.
- No website, otherwise you need it stay quick: host the standalone web page by itself (Letaido can publish it for you, or a static host works), then hyperlink to it out of your important website.
Whichever route you’re taking, the search engine optimisation fundamentals determine whether or not it ranks: a descriptive URL and title, the instrument seen within the web page’s HTML (not buried in an un-crawlable iframe), quick load on cell, and that FAQ block so the web page has textual content to match the question. Get one instrument stay, let it rank, and use what it teaches you to construct the subsequent.
Last ideas
Instruments are largely resistant to the factor consuming everybody else’s site visitors: an AI Overview can summarise an article, however it may possibly’t do your calculation or convert your file for you—folks nonetheless need to land on the web page and use it.
Free instruments have by no means been simpler to make: that deck calculator value me $1.24 and a few minute, the place a number of years in the past it was a developer ticket. And persons are genuinely glad to search out them—a free instrument that does one job nicely earns hyperlinks, return visits, and goodwill in a method one other weblog put up hardly ever does.
A defensible site visitors alternative that’s getting cheaper to construct and that customers truly like is a uncommon mixture. Go construct one.
