Free Online Calculators
A collection of useful calculators to help you with everyday calculations.
Calculator Categories
Easy to Use
Simple, intuitive interfaces that make calculations quick and effortless.
Free Forever
All our calculators are completely free to use with no hidden costs.
Accurate Results
Get precise calculations you can rely on for your needs.
Popular Calculators
Percentage Calculator
Calculate percentages, percentage of numbers, and percentage changes with our easy-to-use online calculator.
BMI Calculator
Calculate your Body Mass Index (BMI) and understand what it means for your health with our easy-to-use BMI Calculator.
Mortgage Calculator
Calculate your monthly mortgage payments and view a detailed amortization schedule.
Tip Calculator
Calculate tips quickly and easily with our free tip calculator. Perfect for restaurants, services, and any tipping situation.
Age Calculator
Calculate exact age in years, months, and days between any two dates, plus find out days until next birthday.
Salary Calculator
Convert between different salary payment frequencies and calculate adjusted earnings accounting for holidays and vacation days. Perfect for comparing job offers, understanding your true earnings, and financial planning.
Compound Interest Calculator
Calculate how your investments grow over time with this free compound interest calculator. See the power of compound interest on your savings and investments.
Calorie Calculator
Calculate your daily calorie needs based on your age, gender, height, weight, and activity level. Includes multiple BMR formulas and weight management goals.
Time Converter
Convert time measurements between seconds, minutes, hours, days, weeks, months, and years with this easy-to-use calculator. Perfect for scheduling, project planning, and time calculations.
Budget Calculator
Plan your monthly budget with our comprehensive budget calculator. Track income, expenses, and savings across multiple categories to achieve your financial goals.
Loan Calculator
Calculate loan payments, interest, and amortization schedules with our free loan calculator. Supports multiple loan types including amortized, deferred, and bond calculations.
Fuel Cost Calculator
Calculate your fuel costs for any trip or time period. Estimate gas expenses based on distance, fuel efficiency, and current gas prices.
Statistics Calculator
Free online statistics calculator: Calculate mean, median, mode, standard deviation, variance and more. Perfect for data analysis and research.
Running Pace Calculator
Calculate your running pace, finish time, or distance based on your running metrics. Perfect for runners, athletes, and fitness enthusiasts.
Scale Converter Calculator
Convert measurements between real-world sizes and scale model dimensions. Perfect for model making, architecture, and miniature projects.
Concrete Calculator
Calculate the volume of concrete needed for your construction project. Supports various shapes including slabs, columns, tubes, curbs, and stairs.