Free online calculators and tools
Free interactive calculators for finance, health, dates and more. Instant results, no sign-up, with step-by-step explanations.
- 25
- tools
- 3
- languages
- 100%
- free
Featured tools
- TopSquare footage calculatorMultiply length by width to get square footage instantly, with automatic conversion to square meters and square yards. Works in feet or meters, free.
- TopDays Between Dates CalculatorFind the exact number of days between two dates, plus full weeks and leftover days. Free, instant and accurate with leap years from 1900 to 2100.
- TopHours calculator: work hours between two timesAdd up your work hours between clock-in and clock-out, subtract the lunch break and get the total in hours and minutes or in decimal format for payroll.
- TopAmortization CalculatorWork out your fixed monthly payment, total cost and lifetime interest for any mortgage, auto or personal loan with the standard amortization formula.
- TopCompound interest calculatorSee how your savings grow with compound interest and monthly contributions. Includes the exact formula, worked examples and instant results.
- TopVAT calculatorAdd VAT to a net price or back it out of a VAT-inclusive total at any rate. Built for US businesses selling into the EU, UK and other VAT countries.
All tools
How it works
- 1Pick a toolSearch or browse categories until you find the calculator you need.
- 2Enter your numbersNo sign-up: everything runs in your browser and nothing is uploaded.
- 3Get the resultInstantly, with its explanation, formula and step-by-step examples.