Free Online Math & Calculators
35 free tools — Percentage, finance, geometry, and scientific calculators
Percentage Calculator
Calculate percentages, find what percent one number is of another, or add/subtract percentages. Simple and fast.
Percentage Change
Calculate the percentage increase or decrease between two values. Perfect for tracking growth, sales, or price changes.
Percentage Off
Calculate sale prices when a percentage discount is applied. Find the final price after any percent off.
Tip Calculator
Calculate tips and split bills easily. Enter your bill amount, tip percentage, and number of people to split between.
BMI Calculator
Calculate your Body Mass Index from height and weight. Understand your BMI category and health implications.
Age Calculator
Calculate exact age in years, months, days, hours, and minutes. Find how old you or anyone is from a birth date.
GPA Calculator
Calculate your Grade Point Average from letter grades and credit hours. Supports 4.0 scale and weighted GPAs.
Average Calculator
Calculate mean, median, and mode of a set of numbers. Find arithmetic average instantly.
Standard Deviation
Calculate standard deviation and variance for a set of numbers. Measure data spread and variability.
Scientific Calculator
Full-featured scientific calculator with trig, log, exponents, and more. Use it free in your browser.
Binary Calculator
Perform binary arithmetic: add, subtract, multiply, and divide binary numbers. Convert between binary and decimal.
Hex Calculator
Perform hexadecimal arithmetic and convert between hex, decimal, and binary. Essential for programming and web colors.
Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals to numbers. Handles values from 1 to 3999.
Prime Number Checker
Check if a number is prime. Find prime factors and understand number properties.
Fraction Calculator
Add, subtract, multiply, and divide fractions. Simplify fractions and convert between fractions and decimals.
Random Number Generator
Generate random numbers within a range. Pick integers or decimals. Perfect for games, sampling, and simulations.
Dice Roller
Roll virtual dice. Support for d4, d6, d8, d10, d12, d20, and custom dice. Perfect for tabletop games.
Coin Flip
Flip a virtual coin for heads or tails. Fair 50/50 random outcome. Great for quick decisions.
Matrix Calculator
Perform matrix operations: add, subtract, multiply, transpose, determinant, and inverse. Supports various matrix sizes.
Quadratic Formula Solver
Solve quadratic equations using the quadratic formula. Find real and complex roots for ax² + bx + c = 0.
Pythagorean Theorem
Calculate the missing side of a right triangle using a² + b² = c². Find hypotenuse or legs.
Area Calculator
Calculate area of shapes: rectangle, triangle, circle, trapezoid, and more. Enter dimensions for instant results.
Volume Calculator
Calculate volume of 3D shapes: cube, sphere, cylinder, cone, and more. Essential for geometry and real-world applications.
Compound Interest
Calculate compound interest on investments or savings. See how your money grows over time with different rates and periods.
Loan Calculator
Calculate loan payments, total interest, and amortization schedule. See how much you'll pay over the life of a loan.
Mortgage Calculator
Calculate monthly mortgage payments, total cost, and see how down payment and rate affect your payment.
Salary Calculator
Convert between salary and hourly wage. Calculate annual, monthly, weekly, and hourly equivalents.
Tax Calculator
Estimate income tax based on salary, deductions, and filing status. Understand your tax liability.
Discount Calculator
Calculate discounts and sale prices. Find the final price after discount or determine the discount percentage.
Margin Calculator
Calculate profit margin, markup, and cost. Understand the relationship between pricing and profitability.
Markup Calculator
Calculate markup percentage from cost and price. Set prices based on desired markup for your products.
Conversion Rate Calculator
Calculate conversion rate from visitors and conversions. Measure marketing and sales effectiveness.
ROI Calculator
Calculate Return on Investment. Measure profitability of investments, projects, or marketing campaigns.
CAGR Calculator
Calculate Compound Annual Growth Rate. Measure consistent annual growth over multiple years.
CPM Calculator
Calculate Cost Per Mille (thousand impressions). Essential metric for advertising and media buying.
About Math & Calculators
Browse 35 free math & calculators on WeGotEveryTool. Percentage, finance, geometry, and scientific calculators. Every tool runs entirely in your browser with no file uploads, no server processing, and no signup required.
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