What we make
CalcPenguin has 64 calculators for money, tax and salary, health, dates, conversions, construction, maths, education and games. Each one gives the answer, then shows every step of the working and reads the result back in plain words, so you can check it yourself.
What makes it different
- Local rules, kept current. Pakistan's salary tax bands, UAE gratuity, Saudi end-of-service awards and VAT rates come from each country's own law, each with the date we last checked it.
- Local units. Marla and kanal, tola and masha, maund, and the brick, tile and paint sizes sold in local markets.
- Compare, save and share. Try up to three scenarios side by side, have your latest numbers remembered on your own device, or send a link that opens with your inputs filled in.
- Works on any phone. Every page is checked at a small phone's width before it goes live.
No interest calculators
We don't publish calculators for interest (riba): no mortgage, loan, EMI, credit-card or compound-interest tools. Our money calculators cover zakat, saving, pricing, budgeting and everyday costs instead.
How we check our work
Every calculator is tested against worked examples before it is published. Read how we check our calculators for the details, including how to report a mistake.
Get in touch
Suggestions for new calculators and corrections are welcome. See the contact page.
Last updated 25 October 2026.