Calculators should befree, private & yours to shape
Home of Calculators started as a frustration and became a platform. Today it powers 50+ free calculators, a no-code visual builder, and embeddable widgets used by thousands of people every day.
Make calculation accessible, accurate, and owned by the user.
Most online calculators treat you as the product — your inputs are logged, your behavior is tracked, and the page is cluttered with ads. Home of Calculators takes the opposite approach: no tracking, no ads, no paywalls. Just accurate math, done in your browser.
And because not every calculation fits a pre-built template, we built a visual calculator builder — the same WordPress-style editor, but for calculators. Need a niche mortgage formula? A custom workout-calorie estimator? A/B test ROI? You can build it in minutes, embed it on your site, and even white-label it with your own brand.
A complete calculator platform
Home of Calculators is more than a list of calculators. It's a full toolkit for building, sharing, embedding, and branding them.
50+ ready-made calculators
Math, finance, health, conversion, datetime, statistics, trigonometry, geometry, and everyday tools — all free, all browser-based.
Visual calculator builder
A WordPress-style drag-and-drop editor. Add fields, write formulas, pick a theme. Your custom calculator is live in minutes.
Embed on any website
One-line iframe snippets. Drop a Home of Calculators calculator into your blog, your Shopify store, or your internal docs.
JSON import / export
Back up, version, or share your custom calculator configurations as plain JSON files.
White-label theming
Custom colors, your own logo, brand name on the widget. Make any Home of Calculators calculator look like it came from your brand.
Privacy by design
Every calculation runs in your browser. We never see your inputs. GDPR-friendly, CCPA-friendly, no third-party tracking.
What we believe
Four principles that guide every decision we make about Home of Calculators.
Privacy first, always
Calculations happen in your browser. We never see your inputs. We never sell data. Privacy isn't a feature we added — it's the architecture.
Free for everyone, forever
No paywalls. No premium tiers. No "upgrade to remove ads." A calculator is too useful to gatekeep behind a subscription.
Simplicity over feature-creep
Every calculator should do one thing exceptionally well. We resist the temptation to bloat.
Open and extensible
The visual builder means anyone can extend Home of Calculators. If you need a calculator we haven't built, build it yourself in minutes.
From idea to platform
The spark
A frustrated developer realizes that every "free online calculator" website either shows ads, harvests inputs, or lacks the one specific calculator they need. The idea for Home of Calculators is born.
First 20 calculators
Math, finance, health, conversion — the foundational categories ship. The mathjs-powered engine ensures every calculation is accurate to 128 digits.
Visual builder launched
Drag-and-drop calculator construction arrives. Users can now build calculators without writing a single line of code, using the same engine that powers the built-in ones.
Embeddable widgets
One-line iframe embeds let any website display a Home of Calculators calculator. White-labeling, custom themes, and JSON export turn the platform into a real toolkit.
Where we are now
50+ calculators. 9 categories. 96+ automated engine tests. A thriving community of users who build, share, and embed their own calculators. The platform is mature — but the journey is just beginning.
Who builds Home of Calculators
A small, distributed team united by the belief that good tools should be free.
The Engineering Team
Maintains the math engine, frontend, and infrastructure that keep Home of Calculators running smoothly across the globe.
The Design Team
Crafts the interface, the 14-segment digital displays, and the retro-modern aesthetic that makes Home of Calculators feel alive.
The Content Team
Builds each of the 50+ calculators, writes the help docs, and ensures every formula is verified for accuracy.
The Community
Thousands of users, builders, and embedders who test new calculators, share feedback, and shape what Home of Calculators becomes next.
Common questions
Is Home of Calculators really 100% free?
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Yes. No paywalls. No premium tiers. No in-app purchases. The entire platform is free to use, forever.
Do you see the values I enter into calculators?
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No. All calculations run locally in your browser using JavaScript. We never see or store your inputs.
Can I embed a Home of Calculators calculator on my own website?
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Yes. Open any calculator (or one you build), click Share → Embed, and copy the iframe snippet. It works on any website that allows iframes.
Can I build a completely custom calculator?
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Yes. Our visual builder lets you add fields, write formulas, choose a theme, and add your own logo. The result is a calculator you can share or embed.
How do you make money if everything is free?
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Home of Calculators is independently operated and supported by its founders. We keep costs low with efficient static hosting and avoid the surveillance-ad business model.
Ready to start calculating?
Browse the library, build your own, or embed one on your site — it's all free, and it all happens in your browser.