Free Online Calculators
20 powerful calculators in one place. Mortgage, BMI, Currency, Retirement & more. Fast · Free · No sign-up.
Mortgage Calculator
Calculate monthly mortgage payments, total interest, and amortization schedule for any home loan.
BMI Calculator
Calculate your Body Mass Index instantly. Find your healthy weight range based on height and weight.
Currency Converter
Real-time currency conversion for 170+ currencies. Live exchange rates, updated hourly.
Ovulation & Pregnancy Calculator
Track ovulation, estimate due date, and follow pregnancy week by week.
Retirement Calculator
Plan your retirement savings. Calculate compound growth with monthly contributions.
CAGR / APY Calculator
Calculate compound annual growth rate and annual percentage yield for investments.
Discount Calculator
Instantly calculate sale prices and savings with any discount percentage.
Time Zone Converter
Compare time across cities worldwide. Perfect for remote teams and international calls.
Loan Calculator
Calculate personal, auto, and student loan payments with full cost breakdown.
Compound Interest Calculator
See the power of compounding. Project your wealth growth over decades.
Unit Converter
Convert length, weight, temperature, speed, and more between metric and imperial.
Calorie Calculator
Calculate your daily calorie needs based on activity level, age, and fitness goals.
Tip Calculator
Quickly calculate tips and split bills among friends. Never overthink a restaurant bill again.
Percentage Calculator
Quick percentage math for any situation — discounts, increases, ratios.
Age Calculator
Calculate exact age in years, months, and days from any birth date.
GPA Calculator
Calculate weighted and unweighted GPA for high school and college courses.
Tax Calculator
Estimate income tax across different countries and tax brackets.
Fuel Cost Calculator
Calculate trip fuel costs for gas and electric vehicles. Plan your road trip budget.
Salary Converter
Convert between hourly, daily, weekly, monthly, and annual pay rates.
Random Number Generator
Generate random numbers in any range. Useful for giveaways, sampling, and games.