About NerdyTools
Free calculators and tools — built for real people who need fast, accurate answers without the hassle.
What is NerdyTools?
NerdyTools.com is a free online calculator and tools hub built for people who need fast, accurate answers without the hassle. No signup. No subscriptions. No hidden fees. Every tool works instantly in your browser.
Whether you’re calculating a mortgage repayment, checking your BMI, counting words in an essay, working out your Zakat, or converting between units — NerdyTools has a tool for it. Every tool is designed to give you the answer you need in seconds, not minutes.
Who Builds This?
Hi, I’m Anam Ahmed — Senior Consultant in Digital Technology Services at PwC, based in Sydney, Australia. I built NerdyTools as a side project because every calculator site I used was either cluttered with ads, locked behind signups, or simply gave wrong answers.
With a background in business application delivery, systems integration, and technical consulting, I built NerdyTools to a high standard — accurate formulas, verified data sources, and clean UX. No shortcuts.
📍 Sydney, Australia · 🔗 LinkedIn
Our Commitment to Accuracy
Every financial figure, tax rate, and regulatory value published on NerdyTools is verified against official primary sources before going live. We do not rely on third-party summaries or outdated references.
What We Cover
NerdyTools covers 12 categories of calculators and tools, designed to help with everyday decisions:
Mortgage, loan, investment, tax, salary, retirement, and budgeting calculators.
BMI, calorie, macro, body fat, pregnancy, and sleep calculators.
Percentage, fraction, average, GPA, and scientific calculators.
Age, date difference, working days, timers, and time zone converters.
JSON formatter, regex tester, Base64, UUID, hash generator, and more.
Word counter, character counter, readability score, and text tools.
Color picker, image compressor, and aspect ratio calculator.
Fuel cost, MPG, and EV vs petrol calculators.
Concrete, paint, tile, and electricity bill calculators.
Unit converter and live currency converter.
Zakat calculator with live gold and silver prices.
Token counter, LLM cost calculator, model comparison, and prompt generator.
We’re always adding new tools. If there’s a calculator you’d like to see, let us know.
Why NerdyTools?
No premium tiers, no feature gating, no “sign up for full results.” Every tool is fully functional for everyone.
No accounts, no email collection, no login walls. Open the tool, use it, done.
Calculations happen in your browser. We don’t see your numbers, and we can’t.
We use established formulas, cite our sources, and explain how every calculation works so you can verify it yourself.
No bloated pages, no pop-ups, no dark patterns. Tools load instantly and give you the answer without friction.
Desktop, tablet, and mobile. Every tool is responsive and works on any device with a modern browser.
How We Keep NerdyTools Free
NerdyTools is supported by advertising through Google AdSense. This means you may see ads on our pages, but we will never gate a tool behind a paywall, require a sign-up to see results, or compromise the accuracy of a calculation for commercial reasons. The ads keep the lights on — the tools stay free and honest.
Get in Touch
Have a question, suggestion, or feedback? I’d love to hear from you.
- 🐛 Found a bug or an incorrect figure? Report it and I’ll fix it within 24 hours.
- 💡 Have a tool idea? There’s a good chance I’ll build it.
- 📬 General enquiries are welcome too.
Explore All NerdyTools By Categories
Find the right tool for any task — free, fast, and no sign-up required