Free Online Calculators

Fast, accurate, and easy-to-use calculators for everyday needs

All Tools

15 tools

Calculate percentages: find X% of Y, what percent, or % change

Calculate Body Mass Index with metric or imperial units

Convert length, weight, temperature, and volume units

Calculate exact age in years, months, and days

Calculate tips and split bills among friends easily

Find days between dates or add/subtract days

Calculate daily calorie needs (BMR/TDEE)

Calculate monthly payments and total loan interest

Calculate compound interest with contributions

Convert between hourly wage and annual salary

Calculate sale prices and savings

Calculate Grade Point Average

Calculate trip fuel costs

Convert times between time zones

Generate random numbers within a range