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.
Exponent Calculator
Calculate exponents and powers. Any base to any power including fractions. Free exponent calculator.
Fraction Calculator
Calculate fractions: add, subtract, multiply, divide. Step-by-step simplification. Free fraction calculator.
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.
Logarithm Calculator
Calculate logarithms: log base 10, natural log, and custom bases. Free logarithm calculator.
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.
Permutation & Combination Calculator
Calculate permutations (nPr) and combinations (nCr). Arrangements vs selections. 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.
Random Number Generator
Generate random numbers in any range. Single, multiple, or no-repeat lists. Free random number generator.
Ratio Calculator
Simplify ratios and solve proportions. Find missing values in A:B = C:?. Free ratio calculator.
Speed Distance Time Calculator
Calculate speed, distance, or time from the other two values. Any units. Free SDT calculator.
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.
Standard Deviation Calculator
Calculate standard deviation, variance, and mean from a data set. Population and sample. Free calculator.
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.
Weighted Average Calculator
Calculate weighted average from values and weights. GPA, portfolio returns, grades. Free calculator.
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.