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Basic, scientific, financial, health, construction, and unit-conversion calculators — all in one place, all free.
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Frequently Asked Questions
Are these calculations accurate?
Yes — each calculator uses the standard, widely-used formula for its purpose (e.g. the Mifflin-St Jeor equation for BMR, Naegele's rule for pregnancy due dates, standard amortization formulas for EMI/loans). Health and financial calculators here are for general informational purposes, not a substitute for professional medical or financial advice.
Is my data sent anywhere?
No — every calculation happens locally in your browser. The only exception is the Currency Converter, which fetches current exchange rates from our server (which itself fetches from a public rate provider) — no personal data is involved in that request.