Skip to content
ToolzHive

Math Calculators

27 free tools

Free math and education calculators for arithmetic, percentages, fractions, roots, geometry and statistics, plus grade, GPA and final exam calculators for students.

Math Calculators – Math, statistics, grades and GPA. 42 + × ÷ √

All 27 math calculators

Addition Calculator

Add two or more numbers of any size exactly, including decimals and negatives.

Division Calculator

Divide numbers and see the exact decimal, repeating digits, fraction and remainder.

Graphing Calculator

Plot one or more functions like sin(x) or x^2 on an interactive, zoomable graph.

Fraction Calculator

Add, subtract, multiply and divide fractions and mixed numbers, with simplified answers.

Ratio Calculator

Simplify ratios, solve A:B = C:D and scale a ratio up or down.

LCM Calculator

Find the least common multiple of two or more numbers, with prime factorization steps.

GCF & HCF Calculator

Find the greatest common factor (highest common factor) of numbers with steps.

Factor Calculator

List every factor and factor pair of a number and its prime factorization.

Slope Calculator

Find the slope, angle, distance and line equation from two points.

Distance Calculator

Calculate the distance between two points on a plane, in 3D, or between map coordinates.

Area Calculator

Calculate the area of rectangles, circles, triangles, trapezoids and more shapes.

Volume Calculator

Calculate the volume of cubes, cylinders, spheres, cones, pyramids and more.

Grade Calculator

Calculate your weighted average grade from assignments, tests and their weights.

GPA Calculator

Calculate your semester and cumulative GPA from letter grades and credit hours.

Practical guides

  • How to Multiply Two- and Three-Digit Numbers

    Work through multiplication using partial products, check two- and three-digit examples, and handle decimal places and negative signs.

  • How to Use Addition Calculator

    Add two or more numbers of any size exactly, including decimals and negative numbers, with no rounding errors. Free online addition calculator.

  • How to Use Subtraction Calculator

    Subtract one number from another exactly, including decimals, negatives and very large numbers, and see the difference and absolute difference. Free.

  • How to Use Multiplication Calculator

    Multiply whole numbers, decimals and negative values online. Check the product and scientific notation, with worked examples for two- and three-digit numbers.

  • How to Use Division Calculator

    Divide numbers and see the exact decimal with repeating digits marked, the simplified fraction, the remainder and a rounded result. Free division calculator.

  • How to Use Percentage Calculator

    Calculate percentages online: what is X% of Y, X as a percent of Y, and percentage increase or decrease between two values. Free percentage calculator.

Browse all guides

Explore other categories

Text Tools 25 tools HTML Tools 11 tools Image Tools 24 tools PDF Tools 20 tools CSS Tools 19 tools Coding Tools 18 tools Color Tools 12 tools Data Generators 8 tools Unit & Number Converters 12 tools Date & Time Tools 15 tools Math Calculators 27 tools Health & Body Calculators 21 tools Everyday Financial Calculators 34 tools Social Media Tools 12 tools DNS Tools 14 tools IP & Network Tools 20 tools Webmaster & SEO Tools 30 tools Security & Encoding Tools 16 tools Device & Browser Tests 12 tools Productivity Tools 13 tools Home Calculators 30 tools Size Charts 12 tools Research & Academic Tools 27 tools Medical & Clinical Tools 33 tools

Accessibility Menu

Personalize your experience. Open with Ctrl+U (Option+U on Mac). Preferences stay in this browser when storage is available.

Move / Hide Widget

Restore at any time with Ctrl+U (Option+U on Mac).

Accessibility statement and help