CalculatorSoup
In its own wordsLooks like: Software or appCalculators | Calculator SoupFind the ideal calculator for math, science, statistics. Browse calculators for banking, finance, loans, time and date, conversion, fractions, algebra and more.
CalculatorSoup (calculatorsoup.com) looks like a software product or app, is ranked in the top 10,000 sites and was registered in 2009. It uses Cloudflare, Google Workspace and Google Analytics; we found no traces of an AI site builder.
Among the top 10K sites.
A popularity band, not a visit count.
Tranco: #17,089 · Chrome UX Report: Top 10,000 · Majestic Million: #28,683
| Source | Says | As of |
|---|---|---|
| TrancoA research ranking that combines several traffic and link sources, published daily. | #17,089 | list of 27 Oct 2026 |
| Chrome UX ReportRank buckets from Google’s real Chrome traffic, published monthly. | Top 10,000 | Sep 2026 |
| Majestic MillionRanks sites by how many separate networks link to them (links, not visits), published daily. CC BY 3.0 | #28,683 | list of 28 Oct 2026 |
No framework or CMS shows in the page; it uses CDN, Email, Analytics, SEO.
Around it: CDN, Email, Analytics, SEO.
cf-ray: a52c9dfbbabf5a29-EWR
calculatorsoup.com MX 25 ALT4.ASPMX.L.GOOGLE.com.
<script src="https://www.googletagmanager.com/gtag/js?id=G-LFHJS0SJXQ">
<meta name="google-site-verification" content="zGK6qNrkg9uRj-kj68kYl89JANo50N8escVDgQktfAc">
4 of 7 trust signals found on the home page.
Signals, not a judgement: missing details are common on small, honest sites.
"email": "s•••@calculatorsoup.com"
"email": "s•••@calculatorsoup.com"
A second opinion on its security setup: Mozilla’s HTTP Observatory grades the site when you open it. Ten checks before you buy · A signal looks wrong? Report it
Looks like: Software or app.
In its own wordsCalculators | Calculator SoupFind the ideal calculator for math, science, statistics. Browse calculators for banking, finance, loans, time and date, conversion, fractions, algebra and more.
Our reading of the page, medium confidence.
"@type": "WebApplication"
Confirmed by 2 independent sources: structured data and copyright line.
"name": "CalculatorSoup, LLC"
© 2006 - 2026 CalculatorSoup
Each name is quoted from its source. A brand and the company that owns it often go by different names.
Its summary for AI assistantsCalculatorSoup is a free library of online calculators for math, finance, time and date, unit conversion, statistics, construction, geometry, physics and health. Many calculators show the formulas and step-by-step work used to get the answer.Read it in full
What its robots.txt and robots tags ask of AI crawlers. Each crawler chooses whether to follow it.
Read from what the page says about itself; we haven’t checked whether it’s true.
No AI builder traces found.
Coding tools such as Cursor leave no traces, so this doesn’t mean a person made it.
AI traces: None found
AI site builders leave traces in the sites they make. We look for the traces of 53 of them and show every match with the line it came from, so you can check it yourself.
We test this on 2,275 sites whose makers we know, and publish what we get wrong.
How we test it · Every builder we know · How to tell if a site was built with AI
Ready for AI: it scores 86 of 100.
It lets every AI crawler in: the site’s choice, never scored.
AI readiness
It says what it is in structured data and lists its pages.
To reach Agent-ready:Files for AI agents +10
Optional: for sites with an API or a sign-in.
Higher than 89% of the 2,439 most visited sites we read, whose median is 72.
Files for AI agents
Now None of the 8 we look for.
If agents could use the site, publish what they need where they look.
Why it matters: Agents act for people: they look for these files to know what a site lets them do. Worth it only if agents can use the site.
If AI agents could use https://www.calculatorsoup.com for its visitors (to search it, book, buy or sign in), publish what they need at the standard addresses, and only what the site really offers: an MCP server card at /.well-known/mcp/server-card.json if it runs an MCP server, an API catalog at /.well-known/api-catalog (RFC 9727) listing its public APIs, and OAuth protected resource metadata at /.well-known/oauth-protected-resource (RFC 9728) if agents sign in.
Links for AI tools
Now None in the home page’s headers.
Point AI tools to the site’s files in the home page’s Link header.
Why it matters: A Link header points AI tools to a site’s files from any page, without guessing addresses.
Make the home page of https://www.calculatorsoup.com send a Link header (RFC 8288) that points AI tools to the site’s files, for example: Link: </sitemap.xml>; rel="sitemap", </llms.txt>; rel="describedby"; type="text/plain". List only files the site serves.
Markdown copy
Now Not offered: it sends the page’s HTML.
Answer requests for Markdown with a Markdown version of the page.
Why it matters: A Markdown copy gives AI tools the page’s words without the HTML around them.
When a request to https://www.calculatorsoup.com asks for Markdown (its Accept header includes text/markdown), answer with a Markdown version of the page’s main content and the header Content-Type: text/markdown. Requests for HTML keep getting HTML; add Vary: Accept so caches keep the two apart.
Sitemap: https://www.calculatorsoup.com/sitemap.xml
Calculators | Calculator Soup skip to main content Calculator Soup ® Online Calculators Search Contact | Calculator Index Basic Calculator Calculators Mathematics Calculators Fractions Calculators…
> CalculatorSoup is a free library of online calculators for math, finance, time and date, unit conversion, statistics, construction, geometry, physics and health. Many calculators show the formulas and step-by-step work used to get the answer.
<title>Calculators | Calculator Soup</title>
<meta name="description" content="Find the ideal calculator for math, science, statistics. Browse calculators for banking, finance, loans, time and date, conversion, fractions, algebra and more.">
<script type="application/ld+json">
Keeping AI out is the site’s choice, so it never lowers the score.
Its robots.txt names none of the 24 crawlers of the 10 AI companies we know, so it lets every one in.
None of the 27 other AI crawlers we know is kept out.
It gives no Content Signals and no “noai” tag.
Like 68% of the 1,691 popular sites whose robots.txt we read in October 2026, it keeps no AI training crawler out. How many websites block AI crawlers?
We read the site once, as our named bot: its robots.txt, read as crawlers read it, its home page and the files AI tools ask sites for. What we couldn’t read says so. robots.txt asks and doesn’t enforce: a firewall can treat AI crawlers differently from us.
94 of 100: strong trust signals.
How established and checkable it is; AI traces carry no weight.
A high score isn’t a promise that a business is honest. How the score works.
Registered in 2009.
The web archive couldn’t be reached; we’ll ask it again. Why can this be empty?
Only from what anyone can see: the site’s public pages and public records.
937 checks on 30 Oct 2026, with version 0.6.0 of our checks and version 1.1 of the score.
CalculatorSoup describes itself: “Find the ideal calculator for math, science, statistics. Browse calculators for banking, finance, loans, time and date, conversion, fractions, algebra and more.” It looks like a software product or app. See the evidence
Its domain was registered on 25 Dec 2009, 16 years ago. See the evidence
It uses Cloudflare, Google Workspace and Google Analytics; we found 4 technologies in all. See the evidence
It is among the top 10,000 sites, by Tranco, Chrome UX Report and Majestic Million. See the evidence
We found no traces of an AI site builder. That doesn’t prove a person built it: AI coding assistants leave no traces. See the evidence
CalculatorSoup, LLC, named by its structured data and its copyright line. See the evidence
Automated findings from the site’s public home page and public records, as of 30 Oct 2026. They describe what we found, not the people or business behind the site, and they may be incomplete or out of date. This is information, not advice. Terms · Report an error
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