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Math calculators
Work with expressions, fractions, integers and matrices.
- Basic Math Calculator
Calculate with a keyboard or keypad, with answer and memory controls.
- Scientific Calculator
Calculate with a keyboard or keypad, with answer and memory controls.
- Fraction Calculator
Add, subtract, multiply and divide fractions or mixed numbers exactly.
- Percentage Calculator
Find a percentage, compare values or apply a percentage change.
- Random Number Generator
Generate random integers, with optional sampling without duplicates.
- Percent Error Calculator
Measure absolute percentage error against a reference value.
- Exponent Calculator
Raise a number to a positive, negative or fractional power.
- Binary Calculator
Calculate exact integer results and convert between number bases.
- Hex Calculator
Calculate exact integer results and convert between number bases.
- Half-Life Calculator
Solve a constant exponential-decay model for the missing quantity.
- Quadratic Formula Calculator
Solve quadratic and linear equations, including complex roots.
- Log Calculator
Find logarithms in any valid positive base, including e and 10.
- Ratio Calculator
Simplify a ratio or solve a missing term in a proportion.
- Root Calculator
Find square, cube and higher real roots.
- Least Common Multiple Calculator
Find the LCM and GCF of a list of whole numbers exactly.
- Greatest Common Factor Calculator
Find the LCM and GCF of a list of whole numbers exactly.
- Factor Calculator
List positive factors and the prime factorization of an integer.
- Rounding Calculator
Round decimals exactly, including negative values and ties.
- Matrix Calculator
Add, multiply, transpose, invert or find a matrix determinant.
- Scientific Notation Calculator
Convert decimals and E notation without losing large-number digits.
- Big Number Calculator
Perform exact arithmetic on large integers and decimal values.