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Math Calculators

Free math calculators — percentages, matrices, number systems, statistics, and more.

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All Math Tools
Math
Area Calculator
Calculate area of any shape — square, rectangle, circle, triangle, trapezoid, and more. …
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Math
Average Calculator
Calculate the mean, median, mode, and range of any set of numbers. Shows step-by-step wo…
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Math
Binary to Decimal Converter
Convert numbers between binary (base 2), decimal (base 10), hexadecimal (base 16), and o…
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Math
Combinations & Permutations Calculator
Calculate combinations C(n,r) and permutations P(n,r). Enter n and r to find how many wa…
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Math
Exponent Calculator
Calculate any base raised to any power. Supports negative exponents, fractional exponent…
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Math
Fraction Calculator
Add, subtract, multiply, and divide fractions and mixed numbers. Shows step-by-step work…
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Math
Fraction to Decimal Converter
Convert any fraction to a decimal instantly. Also converts decimals to fractions. Shows …
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Math
Half-Life Calculator
Calculate radioactive decay, remaining substance, and time elapsed using half-life. Supp…
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Math
LCM and GCF Calculator
Calculate the LCM (Least Common Multiple) and GCF/GCD (Greatest Common Factor/Divisor) f…
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Math
Logarithm Calculator
Calculate logarithms in any base — log base 10, natural log (ln), log base 2, or any cus…
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Math
Matrix Calculator
Matrix calculator for addition, subtraction, multiplication, transpose, determinant, and…
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Math
Number System Converter
Convert numbers between binary, octal, decimal, and hexadecimal instantly. Shows convers…
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Math
Number to Words
Convert any number to English words instantly. Supports integers up to trillions. Also c…
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Math
Ohm's Law Calculator
Calculate voltage, current, resistance, and power using Ohm's Law. Enter any two values …
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Math
Percentage Calculator
Calculate what percent one number is of another, find a percentage of a number, or find …
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Math
Percentage Difference Calculator
Calculate percentage difference, percentage change, and percentage increase or decrease …
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Math
Prime Number Checker
Check if any number is prime instantly. Shows prime factors, nearest primes, and lists a…
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Math
Probability Calculator
Calculate probability for single events, multiple independent events, and conditional pr…
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Math
Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals to numbers instantly. Supports 1 to…
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Math
Roman Numeral Date Converter
Convert any date to Roman numerals for tattoos, anniversaries, and birth years. Also con…
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Math
Rounding Calculator
Round any number to decimal places, nearest integer, nearest 10, 100, or any custom valu…
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Math
Scientific Calculator
Free online scientific calculator with trigonometry, logarithms, powers, roots and memor…
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Math
Scientific Notation Calculator
Convert numbers to and from scientific notation. Add, subtract, multiply and divide numb…
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Math
Significant Figures Calculator
Round any number to a specified number of significant figures. Explains which digits are…
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Math
Speed Distance Time
Calculate speed, distance, or time given the other two values. Supports km/h, mph, m/s, …
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Math
Square Root Calculator
Calculate the square root of any number instantly. Also shows cube root, nth root, and p…
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Math
Z-Score Calculator
Calculate the Z-score for any value in a dataset. Enter value, mean, and standard deviat…
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