Math & Numbers
11 tools
Calculators, converters and statistics for everyday number crunching.
- CalculatorFull scientific keypad with memory, parentheses and trig — powered by a purpose-built parser, no eval involved.
- Percentage CalculatorWork out percentages, percentage of a value and percentage change.
- Rule of ThreeSolve direct and inverse proportion problems for the missing value.
- Average, Median & ModeGet mean, median, mode, range and standard deviation from a list of numbers.
- Min & MaxFind the smallest and largest values in a list of numbers.
- Sequence GeneratorGenerate a number list from a start, step and count or end value.
- Number List FilterKeep or drop numbers by range, parity, divisibility or prime test.
- Base ConverterConvert numbers between binary, octal, decimal, hexadecimal and any base 2-36.
- Radian & Degree ConverterConvert angles between radians, degrees and gradians.
- Roman Numeral ConverterConvert numbers to Roman numerals and back, with range validation.
- Fraction & Decimal ConverterConvert fractions to decimals and decimals back to reduced fractions.