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🔢 Math Calculators

23 free math calculators — from basic percentages and fractions to scientific notation, matrices, and quadratic formulas.

Basic Math

%
Percentage Calculator
What is X% of Y? What % is X of Y? Percentage increase/decrease.
 ½
Fraction Calculator
Add, subtract, multiply, divide fractions. Mixed numbers supported.
 ∶
Ratio Calculator
Simplify ratios and solve ratio proportions.
 ≈
Rounding Calculator
Round to decimal places, significant figures, nearest 10/100.
 🎲
Random Number Generator
Generate random integers or decimals within any range.

Algebra & Advanced

🔬
Scientific Calculator
Full scientific calculator with trig, log, exponents, and memory.
 x²
Quadratic Formula
Solve ax²+bx+c=0. Shows discriminant and both roots.
 ^
Exponent Calculator
Calculate any base raised to any power.
 √
Root Calculator
Square root, cube root, and nth root calculator.
 ln
Logarithm Calculator
Log base 10, natural log (ln), log base 2, and custom bases.
 ⊞
Matrix Calculator
Matrix addition, multiplication, inverse, and determinant.
 ÷
Factor Calculator
Find all factors and prime factorisation of any integer.
 GCF
GCF / LCM Calculator
Greatest Common Factor and Least Common Multiple.
 LCM
LCM Calculator
Least Common Multiple for two or more numbers.

Number Systems & Science

01
Binary Calculator
Binary arithmetic and binary/decimal/hex conversion.
 0x
Hex Calculator
Hexadecimal arithmetic and conversion.
 ∞
Big Number Calculator
Arithmetic with very large integers — no overflow.
 E
Scientific Notation
Convert to/from scientific notation and perform operations.
 Δ%
Percent Error Calculator
Calculate experimental vs theoretical percent error.
 ☢️
Half-Life Calculator
Radioactive decay and half-life formula calculations.
 △
Triangle Calculator
Solve triangles from sides/angles using law of sines/cosines.
 σ
Standard Deviation
Population and sample standard deviation from a data set.
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Advanced Math Calculator
Multi-step expressions with brackets, operators and constants.