Maths & Science Calculators
11 free calculators · Updated for 2025/26
Square Root, Powers & Logarithm Calculator
Calculate square roots, cube roots, custom powers, and logarithms (log10, ln, log2).
Fraction Calculator
Add, subtract, multiply and divide fractions. Shows simplified result, mixed number and decimal.
Standard Deviation Calculator
Calculate standard deviation, variance, mean, median, min, max and range from a set of numbers.
Mean, Median & Mode Calculator
Calculate mean, median, mode, range, sum, min and max from a set of numbers. Shows sorted data.
Binary / Hex / Decimal Converter
Convert between binary, decimal, hexadecimal and octal number systems instantly.
Probability Calculator
Calculate event probabilities, combinations and permutations. P(A or B), P(A and B), nCr, nPr.
Roman Numeral Converter
Convert between decimal numbers and Roman numerals (I, V, X, L, C, D, M). Both directions.
Trigonometry Calculator
Calculate sin, cos, tan and inverse functions in degrees or radians. Includes sec, csc, cot.
Prime Number Checker
Check if a number is prime, find prime factorisation, and list primes up to N.
Exponent / Power Calculator
Calculate any number raised to any power. See common powers of your base number.
Logarithm Calculator
Calculate log₁₀, ln, log₂ and custom base logarithms. Includes antilog and log rules.