Math & Science
Browse all 34 math & science tools
What is math and science calculators?
Math and science calculators apply unit conversion formulas and mathematical operations — from percentage calculations and angle conversions to torque, force, and illuminance — giving instant, accurate results for engineering, physics, and everyday problem-solving.
Angle Converter
Convert between degrees, radians, gradians, turns, and arc units for math and science.
Chemical Equation Balancer
Balance chemical equations by finding the correct coefficients for reactants and products.
Circle Calculator
Calculate radius, diameter, circumference, area, arc length, and sector area from any input.
Density Converter
Convert between kg/m³, g/cm³, lb/ft³, and more. Includes material density reference.
Derivative Calculator
Differentiate polynomial functions with step-by-step power rule application.
Dilution Calculator
Solve C₁V₁ = C₂V₂ for any missing variable in solution dilution problems.
Distance Formula Calculator
Find the straight-line distance between two coordinate points with step-by-step working.
Equation Solver
Solve single linear equations and systems of 2 equations with step-by-step working.
Force Converter
Convert between newtons, pounds-force, dynes, kgf, and more force units.
Fraction Calculator
Add, subtract, multiply, divide, and simplify fractions with step-by-step working.
Frequency Converter
Convert between Hz, kHz, MHz, GHz, RPM, and rad/s for electronics and engineering.
Graphing Calculator
Plot y=f(x) on an interactive graph with multiple functions and adjustable windows.
Half-Life Calculator
Calculate radioactive or exponential decay: remaining amount, half-life, or time elapsed.
Illuminance Converter
Convert between lux, foot-candles, phot, and other light measurement units.
Integral Calculator
Integrate polynomial functions with step-by-step power rule application.
Logarithm Calculator
Calculate log, antilog, and change of base for any base including ln and log₂.
Matrix Calculator
Add, multiply, transpose, and find determinants of matrices up to 4×4.
Midpoint Calculator
Find the midpoint between two coordinate points with step-by-step calculation.
Molar Mass Calculator
Calculate molar mass from chemical formulas with element-by-element atomic mass breakdown.
Percentage Calculator
Calculate percentages with 4 modes: X% of Y, X is what % of Y, increase/decrease, and find original.
Percentage Change Calculator
Calculate percentage increase or decrease between two values. Shows absolute and relative change.
Permutation & Combination Calculator
Calculate nPr and nCr with step-by-step factorial breakdowns and reference table.
Prime Number Checker
Check primality, find primes in a range, and factorize numbers into prime factors.
Probability Calculator
Calculate single event, AND, OR, and complement probabilities with formulas shown.
Pythagorean Theorem Calculator
Find the missing side of a right triangle using a² + b² = c², plus area and perimeter.
Quadratic Equation Solver
Solve ax² + bx + c = 0. Shows discriminant, real/complex roots, vertex, and axis of symmetry.
Random Number Generator
Generate random integers or decimals in any range with optional duplicate prevention.
Scientific Calculator
Trig, log, exponents, factorials, memory, and constants in DEG/RAD modes.
Scientific Notation Converter
Convert between decimal, scientific notation, engineering notation, and E notation.
Significant Figures Calculator
Count significant figures and round numbers to any precision with rules explained.
Slope Calculator
Calculate slope, y-intercept, line equation, and perpendicular slope from two points.
Statistics Calculator
Calculate mean, median, mode, standard deviation, variance, and more from any dataset.
Torque Converter
Convert between N·m, ft·lb, in·lb, and more torque units for automotive and engineering.
Triangle Calculator
Calculate area, angles, heights, and type from three side lengths using Heron's formula.
Formula & Methodology
Did you know? The SI (International System of Units) — the modern metric system — was established in 1960 and is now the global standard for scientific measurement, used in every country except the United States, Myanmar, and Liberia for everyday commerce.
Sources
- National Institute of Standards and Technology (NIST) — SI unit definitions and conversions
- International Bureau of Weights and Measures (BIPM) — Official SI measurement standards