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About GreatCalc

GreatCalc is a free online calculator website. Every tool runs instantly in your browser — no login, no signup, and nothing you type is ever stored.

What we offer

500 calculators across Finance, Health, Math, Converters and Daily Life — SIP, EMI, income tax, GST, FD, PPF, gold, BMI, age, percentage and many more.

Why free?

Quick, accurate calculations should be free for everyone. No paywalls, no forced signups. Works in English and Hindi, on any phone.

Privacy

All calculations happen inside your browser. Your numbers are never sent to any server.

Contact

Questions or suggestions? Write to hello@greatcalc.com.

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