Math Calculators
Basic, scientific, percentage, fraction and average calculators for homework and quick checks.
Basic CalculatorA fast online calculator for everyday arithmetic — add, subtract, multiply and divide.Scientific CalculatorOnline scientific calculator with trig, logarithms, powers, roots and constants.Percentage CalculatorSolve any percentage problem — percent of a number, what percent, and percent change.Fraction CalculatorAdd, subtract, multiply and divide fractions and get the answer in lowest terms.Average CalculatorCalculate the mean, median, mode, range and sum of a set of numbers.Exponent CalculatorCalculate exponents, powers, roots, and scientific notation instantly.Log CalculatorCalculate logarithms for any base, including natural log (ln) and base 10 (log10).Matrix CalculatorAdd, subtract, multiply matrices and calculate scalar products.Determinant CalculatorCalculate the determinant and trace of 2x2 and 3x3 matrices.Quadratic Equation CalculatorSolve quadratic equations ax² + bx + c = 0, find discriminant and real or complex roots.Standard Deviation CalculatorCalculate sample and population standard deviation, variance, and mean for any dataset.Prime Number CalculatorTest if a number is prime and find its prime factorization.GCF CalculatorFind the Greatest Common Factor (GCF / GCD / HCF) of two or more numbers.LCM CalculatorFind the Least Common Multiple (LCM) of two or more numbers.Permutation & Combination CalculatorCalculate permutations nPr and combinations nCr for any set size n and selection r.Hex ↔ RGB ConverterConvert hex color codes to RGB values and RGB to hex. Supports 3- and 6-digit hex codes.Binary ↔ Decimal ConverterConvert between binary and decimal number systems. Also shows octal and hexadecimal equivalents.
Answers
Math calculator FAQs
What math calculators are available?
Use the basic calculator for quick sums, the scientific calculator for advanced functions, and dedicated percentage, fraction and average calculators that show every step.
How do I calculate a percentage?
Multiply the number by the percent and divide by 100 — 20% of 150 is 150 × 20 ÷ 100 = 30. The percentage calculator also handles percentage change and "what percent of" problems.
When should I use a scientific calculator?
Use the scientific calculator for trigonometry, logarithms, exponents, roots and constants like pi — anything beyond basic add, subtract, multiply and divide.
How do I add, simplify or convert fractions?
The fraction calculator adds, subtracts, multiplies and divides fractions, reduces them to lowest terms, and converts between fractions and decimals — showing the working each time.
How do I find an average?
Add all the values and divide by how many there are. The average calculator also reports the median and range of your data set.
All math calculators
Basic, scientific, percentage, fraction and average calculators for homework and quick checks.
- Basic Calculator — A fast online calculator for everyday arithmetic — add, subtract, multiply and divide.
- Scientific Calculator — Online scientific calculator with trig, logarithms, powers, roots and constants.
- Percentage Calculator — Solve any percentage problem — percent of a number, what percent, and percent change.
- Fraction Calculator — Add, subtract, multiply and divide fractions and get the answer in lowest terms.
- Average & Mean Median Mode Calculator — Calculate the mean, median, mode, range and sum of a set of numbers.
- Exponent Calculator — Calculate Powers and Exponents — Calculate exponents, powers, roots, and scientific notation instantly.
- Log Calculator — Logarithm & Natural Log (ln) — Calculate logarithms for any base, including natural log (ln) and base 10 (log10).
- Matrix Calculator — Add, Subtract & Multiply Matrices — Add, subtract, multiply matrices and calculate scalar products.
- Determinant Calculator — 2x2 & 3x3 Matrix Determinants — Calculate the determinant and trace of 2x2 and 3x3 matrices.
- Quadratic Equation Calculator — Solve ax² + bx + c = 0 — Solve quadratic equations ax² + bx + c = 0, find discriminant and real or complex roots.
- Standard Deviation Calculator — Sample & Population — Calculate sample and population standard deviation, variance, and mean for any dataset.
- Prime Number Calculator — Test Primality & Factorize — Test if a number is prime and find its prime factorization.
- GCF Calculator — Greatest Common Factor (GCD / HCF) — Find the Greatest Common Factor (GCF / GCD / HCF) of two or more numbers.
- LCM Calculator — Least Common Multiple Finder — Find the Least Common Multiple (LCM) of two or more numbers.
- Permutation & Combination Calculator (nPr & nCr) — Calculate permutations nPr and combinations nCr for any set size n and selection r.
- Hex ↔ RGB Converter — Convert hex color codes to RGB values and RGB to hex. Supports 3- and 6-digit hex codes.
- Binary ↔ Decimal Converter — Convert between binary and decimal number systems. Also shows octal and hexadecimal equivalents.