Free Online Calculators for Every Need
Fast, accurate, and easy-to-use calculator tools for mathematics, finance, health, cooking, construction, and more. No signup required.
Calculator Categories
Mathematics
Mathematical calculators for basic arithmetic, algebra, geometry, statistics, and advanced math operations.
View Mathematics Calculators →Finance
Financial calculators for mortgages, loans, investments, savings, taxes, and budgeting.
View Finance Calculators →Health & Fitness
Health and fitness calculators for BMI, calories, body composition, and wellness tracking.
View Health & Fitness Calculators →Conversions
Unit conversion tools for length, weight, temperature, volume, and more.
View Conversions Calculators →Construction
Construction calculators for concrete, roofing, flooring, paint, and building materials.
View Construction Calculators →Cooking
Cooking calculators for recipe scaling, measurement conversions, and kitchen calculations.
View Cooking Calculators →Date & Time
Date and time calculators for age, duration, countdown, and time zone conversions.
View Date & Time Calculators →Education
Educational calculators for GPA, grades, study planning, and academic calculations.
View Education Calculators →Other Tools
Miscellaneous calculators and tools for various everyday calculations.
View Other Tools Calculators →Popular Calculators
Basic Calculator
Free basic calculator for addition, subtraction, multiplication, and division. Easy-to-use online calculator with history feature and responsive design.
Scientific Calculator
Free scientific calculator with trigonometric, logarithmic, exponential functions. Includes sin, cos, tan, log, ln, powers, roots, constants π and e, memory functions.
Percentage Calculator
Free online percentage calculator. Calculate percentage of a number, percentage increase/decrease, what percent is X of Y, and percent change between values.
Fraction Calculator
Free fraction calculator with step-by-step solutions. Add, subtract, multiply, and divide fractions. Automatic simplification and mixed number conversion.
Algebra Calculator
Free algebra calculator with step-by-step solutions. Solve linear equations, quadratic equations, simplify expressions, and systems of equations online.
Geometry Calculator
Free geometry calculator for 2D and 3D shapes. Calculate area, perimeter, volume, surface area for circles, triangles, rectangles, spheres, cubes, cylinders and more.
Statistics Calculator
Free statistics calculator for data analysis. Calculate mean, median, mode, standard deviation, variance, range, quartiles and frequency distribution for any dataset.
401k Calculator
Calculate 401k retirement savings growth with employer matching, annual contributions, and investment returns. Project your retirement nest egg with detailed breakdowns.
Budget Calculator
Create a personalized monthly budget to track income and expenses. Allocate funds to different categories and achieve your financial goals.
Compound Interest Calculator
Calculate compound interest on savings and investments. See how compound interest grows your money over time with different compounding frequencies.
Investment Calculator
Calculate investment growth and returns with regular contributions and compound interest. Project your investment portfolio value over time.
Loan Calculator
Calculate loan payments based on loan amount, interest rate, and term. Get accurate estimates for personal loans and other borrowing.
Why Use Our Calculators?
Accurate Results
Precise calculations using proven formulas and mathematical methods.
Easy to Use
Clean, intuitive interfaces designed for quick calculations.
Mobile Friendly
Works perfectly on smartphones, tablets, and desktop computers.
Completely Free
All calculators are free to use with no registration required.