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About QuickCalc USA

QuickCalc USA is a collection of free, fast online calculators built for everyday questions about money, work, school and health. Every tool runs instantly in your browser – no sign-up, no downloads, no ads blocking the result – and works on phones, tablets and desktops.

What you can calculate here

Money and loans: mortgage payments, car loans, compound interest, sales tax in all 50 states and tips. Work and pay: hourly to salary and overtime pay. School and health: GPA, BMI and exact age.

How we build our calculators

Each calculator uses the standard, published formula for its topic (for example the amortization formula for loans and the CDC formula for BMI) and shows its working in the article below the tool, so you can check the math yourself. Tax figures are taken from official and widely cited sources such as the Tax Foundation and are updated when rates change.

Important note

Our tools are for information and planning only. They are not financial, tax, legal or medical advice. Always confirm important numbers with your lender, employer, school, tax professional or doctor.

Who is behind QuickCalc USA

QuickCalc USA is built and maintained by A.H. Mulla, an independent publisher who creates practical online tools. Every calculator is written, tested and updated personally, and corrections are welcome via the Contact page.

Suggest a calculator

Missing a tool you need? Tell us on the Contact page – the most requested calculators get built first.

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