Math tools
Math Calculators
Use free calculators for percentages, discounts, averages, geometry, pricing, and other everyday formulas.
Everyday Math
Quick calculators for percentages, pricing, averages, and number formats.
Percentage Calculator
Calculate what a percentage of a number is for discounts, tips, taxes, grades, and everyday math.
Percentage Increase Calculator
Calculate the percentage increase from an original value to a new value.
Discount Calculator
Calculate the final price after a percentage discount for shopping, sales, and promotions.
Average Calculator
Calculate the average of a list of numbers for grades, scores, budgets, and data checks.
Tip Calculator
Calculate a tip amount and total bill for restaurants, delivery, rides, and services.
Unit Price Calculator
Calculate price per unit to compare groceries, products, packages, and bulk purchases.
Markup Calculator
Calculate selling price from cost and markup percentage for pricing products or services.
Margin Calculator
Calculate profit margin percentage from cost and selling price.
Fraction to Decimal Calculator
Convert a fraction to a decimal for homework, measurements, recipes, and everyday math.
Decimal to Percentage Calculator
Convert decimals to percentages for math, grades, rates, ratios, and everyday calculations.
Geometry
Formula calculators for common geometry and measurement problems.
Circle Area Calculator
Calculate the area of a circle from its radius for geometry, schoolwork, and measurements.
Rectangle Area Calculator
Calculate rectangle area from length and width for rooms, layouts, schoolwork, and projects.
Triangle Area Calculator
Calculate triangle area from base and height for geometry, schoolwork, and practical measurements.
Square Root Calculator
Calculate the square root of a number for homework, geometry, estimates, and quick math checks.