About Yantra
Yantra is a free collection of 37+ online tools built for everyday use. No signup required, no paywalls, no unnecessary complexity — just fast, accurate tools that work instantly in your browser.
Our Mission
The web is full of calculators that are either too basic to be useful or buried under pop-ups and dark patterns. Yantra exists to be the opposite — a clean, reliable set of tools you can reach for the moment you need them, designed to get out of your way.
Every calculation runs entirely in your browser. Nothing you type is ever sent to a server.
What's Inside
Finance & Money
10 toolsMortgage, salary, taxes, investments, currency
Health & Fitness
8 toolsBMI, calories, body fat, heart rate zones
Unit Converters
12 toolsLength, weight, temperature, speed, data
Developer Tools
7 toolsJSON formatter, Base64, color picker, regex
Built on Three Principles
Speed
Every tool loads instantly and calculates in real time as you type. No submit buttons, no waiting.
Accuracy
We use official data sources — IRS tax brackets, BLS CPI data, real exchange rates — and show our sources.
Privacy
All calculations happen in your browser. We never store, transmit, or sell what you enter into our tools.
Have feedback, a tool request, or found a bug? We'd love to hear from you.
Get in Touch