Free Online Calculators

Age Calculator

Find your exact age in years, months, days and hours.

Aspect Ratio Calculator

Calculate the missing width or height for any aspect ratio.

BMI Calculator

Calculate your Body Mass Index and find your health category.

Compound Interest Calculator

Calculate investment growth with compound interest and contributions.

Date Calculator

Find the difference between two dates or add/subtract days.

Discount Calculator

Find sale price after discount or work backwards to find discount %.

File Size Converter

Convert between bytes, KB, MB, GB and TB — decimal and binary units.

Fuel Cost Calculator

Calculate road trip fuel cost with passenger cost split.

GPA Calculator

Calculate weighted GPA from course grades and credit hours.

Loan & EMI Calculator

Calculate monthly EMI, total interest and amortization schedule.

Number to Words Converter

Convert numbers to English words — plain, ordinal or currency.

Percentage Calculator

Find percentage, percentage change, increase/decrease and more.

Random Number Generator

Generate random integers or decimals in any range.

Roman Numerals Converter

Convert between Arabic and Roman numerals with step-by-step breakdown.

Savings Goal Calculator

Calculate how long to reach your savings goal or the monthly amount needed.

Statistics Calculator

Calculate mean, median, mode, standard deviation and variance.

Tip Calculator

Calculate tip and split the bill between any number of people.

Timezone Converter

Convert times between time zones and see current time worldwide.

Unit Converter

Convert length, weight, temperature, area and speed.

VAT Calculator

Add or remove VAT, GST or sales tax from any price for any rate.