Free Math Calculators

Free Online Math Calculators

From quick everyday sums to algebra homework, our math calculators give fast, accurate answers – and many show the working step by step so you can learn the method, not just copy the result. They all follow the correct order of operations and run instantly in your browser on any device.

Everyday Calculations

The free online calculator handles daily arithmetic with memory keys, history and keyboard support. The percentage calculator covers six common percentage problems, including increase, decrease and reverse percentages, and the average calculator finds the mean, median and mode of any list of numbers.

School and College Maths

For students, the scientific calculator supports trigonometry, logarithms, powers and brackets. The algebra calculator solves linear, quadratic and simultaneous equations with steps, the quadratic equation solver shows the discriminant and roots, and the fraction calculator adds, subtracts, multiplies and simplifies fractions.

Dates and Time

Working with dates is surprisingly tricky because months have different lengths. The age calculator gives exact age in years, months and days; the days calculator counts days and business days between dates; the date calculator adds or subtracts days, months and years; and the time calculator adds hours and minutes and works out hours worked.

Tips for Using Math Calculators

• Use brackets to make the order of your calculation clear.
• Estimate the answer first so you can spot typing mistakes.
• For homework, follow the step-by-step working to understand the method before checking your own answer.

Frequently Asked Questions