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Money math, made beautiful.

Free calculators for investing, loans, debt, tax & zakat โ€” private, instant, no sign-up required.

โœ“ 10 calculatorsโœ“ Private by designโœ“ Works offline

Every calculator you'll need

Ten precision tools. Every calculation runs 100% in your browser.

Why ArthCalc?

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Private by design

Your numbers never leave your browser. No accounts, no tracking of inputs.

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Transparent math

Every tool shows its formula and step-by-step breakdowns.

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Instant & free

No sign-up, no paywall, no waiting. Results as you type.

Learn the money behind the math

Guides that pair with the calculators.

Frequently asked questions

Are these calculators really free?

Yes โ€” every tool on ArthCalc is free with no account, no limits and no paywall. The site is supported by advertising.

Is my financial data safe?

All calculations run locally in your browser using JavaScript. Your inputs are never sent to our servers, stored, or shared. See the privacy policy.

How accurate are the results?

Calculators use standard financial formulas and round to the nearest unit of currency. They are planning estimates โ€” actual loan terms, taxes and investment returns depend on your provider and circumstances.

Which calculator should I start with?

If you are employed in Pakistan, the salary tax calculator gives an instant take-home figure. For long-term planning, try the compound interest calculator โ€” it surprises almost everyone.

Know your exact take-home pay.

Pakistan salary tax for FY 2026-27, calculated in seconds.

Calculate my tax