Average Calculator
Calculate mean, median, mode, range, and sum for any numbers. Free average and statistics calculator.
Binary to Decimal Calculator
Free binary to decimal calculator. Convert binary numbers to decimal, hexadecimal, and octal. Also converts decimal back to binary.
Coin Flip Calculator
Flip a coin online. Calculate probability of heads or tails sequences. Free virtual coin flip.
Dice Roller
Roll dice online. D6, D20, or custom sides. For board games, D&D, and RPGs. Free virtual dice roller.
Fraction to Decimal Calculator
Free fraction to decimal calculator. Convert any fraction (numerator/denominator) to decimal, percentage, and simplified fraction.
GPA Calculator
Calculate your semester and cumulative GPA. Add courses, credits, and grades. Weighted and unweighted 4.0 scale. Free GPA calculator for college students.
Grade Calculator
Calculate weighted grade average and final exam score needed. Free grade calculator for students.
Matrix Calculator
Calculate matrix operations: add, subtract, multiply, determinant, transpose. Free matrix calculator.
Mean, Median, Mode Calculator
Calculate mean, median, and mode with steps. Enter any dataset. Free statistics calculator.
Percent Increase Calculator
Calculate percentage increase between two numbers. Step-by-step formula and explanation. Free calculator.
Percentage Calculator
Free percentage calculator with three modes. Find what percent X is of Y, calculate X% of a number, or find the original total from a percentage.
Percentage Change Calculator
Calculate percentage increase or decrease between two values. Percent change formula. Free calculator.
Probability Calculator
Free probability calculator. Calculate P(A), P(B), P(A and B), P(A or B), and P(not A) for any two independent or dependent events.
Quadratic Formula Calculator
Solve quadratic equations step by step. Both roots, discriminant, vertex, and factored form. Free calculator.
Random Number Generator
Generate random numbers in any range. Single, multiple, or no-repeat lists. Free random number generator.
Scientific Calculator
Free online scientific calculator. Sin, cos, tan, log, sqrt, exponents, and pi. No download needed.
Square Root Calculator
Calculate square root of any number. Perfect squares, simplified radicals. Free square root calculator.
Standard Deviation Calculator
Free standard deviation calculator. Enter up to 8 values to calculate mean, population standard deviation, sample standard deviation, and variance.
Tip & Bill Split Calculator
Calculate tip amount and split the bill evenly. Tip percentage, total per person, and group bill splitting. Free tip split calculator.
Unit Converter Calculator
Convert between metric and imperial units. Length, weight, volume, temperature, and area. Free unit converter.
Math Made Accessible
Whether you're a student solving homework problems, a teacher checking answers, or a professional running quick calculations, these tools give you instant, accurate results. Each calculator explains the formula and method — so you're learning the math, not just getting an answer. The Scientific Calculator handles everything from basic arithmetic to trigonometry and logarithms.
From Basics to Advanced
Start with our Percentage Calculator and Average Calculator for everyday math. The Quadratic Formula Calculator solves equations and shows the discriminant analysis. The Matrix Calculator handles operations essential for linear algebra. The Standard Deviation Calculator covers statistics. Every calculator works on mobile — perfect for doing math on the go.
Frequently Asked Questions
Which math calculator is most popular?▾
The Percentage Calculator is our most-used math tool, followed by the Average Calculator (mean, median, mode) and the Grade Calculator. For more advanced math, the Scientific Calculator and Quadratic Formula Calculator see heavy traffic during the school year.
Can I use these for homework?▾
Absolutely — and we encourage it. Each calculator shows the formula and method used, so you can learn the process while checking your work. Understanding how to set up a problem is more valuable than memorizing calculation steps. Use these to verify your manual work and build confidence.