Free Online Calculators for Every Need
Fast, free and easy-to-use calculators for finance, health, math and everyday life — no sign-up required.
30 calculators across 4 categories
Browse by category
Financial
Loans, mortgages, interest, savings, taxes and investing.
9 calculators →Fitness & Health
BMI, calories, body fat, pace, pregnancy and more.
7 calculators →Math
Percentages, fractions, geometry, statistics and algebra.
7 calculators →Other
Dates, time, GPA, conversions and handy everyday tools.
7 calculators →Popular calculators
The tools people reach for most.
Mortgage Calculator
Estimate your monthly mortgage payment including taxes, insurance and HOA.
Loan Calculator
Calculate the monthly payment, total interest and payoff for any amortized loan.
BMI Calculator
Calculate your Body Mass Index and see your weight category.
Percentage Calculator
Solve common percentage problems: what is X% of Y, X is what % of Y, and percent change.
Compound Interest Calculator
See how savings grow with compound interest and regular contributions.
Age Calculator
Find your exact age in years, months and days from your date of birth.
Calorie Calculator
Estimate the daily calories you need to maintain, lose or gain weight.
Scientific Calculator
A free online scientific calculator with trig, logs, powers and constants.
Auto Loan Calculator
Work out car loan payments including sales tax, trade-in and fees.
Date Calculator
Find the days between two dates, or add and subtract days from a date.
GPA Calculator
Calculate your grade point average from course grades and credit hours.
Standard Deviation Calculator
Find the mean, variance and standard deviation of a data set.