Mathematics Converters
Number format, base, and unit converters for students, developers, and professionals: fractions, decimals, percentages, ratios, logarithms, angles, number bases, and Roman numerals.
All Mathematics Converters
- Fraction to Decimal3/4 → 0.75
- Decimal to Fraction0.75 → 3/4
- Percentage Converter% ↔ decimal ↔ fraction
- Ratio ConverterRatio ↔ fraction
- Scientific Notation Converter3.5e6 ↔ 3,500,000
- Logarithm Converterlog ↔ ln ↔ log₂
- Degree to Radian° → rad
- Radian to Degreerad → °
- Roman Numeral Converter1990 ↔ MCMXC
- Number Base Converterbase 2–36
- Square Root Calculator√n
- Exponent Calculatorxⁿ
- Significant Figures Calculatorcount and round
How These Converters Help
Unlike physical unit conversions, mathematics conversions do not have to worry about measurement standards or precision limits — a rational number is exactly a rational number. But they still have practical pitfalls: rounding rules, recurring decimals, and the difference between exact representation and floating-point approximation.
Fractions and decimals
Any terminating decimal can be written as a fraction with a denominator that is a product of 2s and 5s. Any fraction whose denominator has only prime factors 2 and 5 produces a terminating decimal; all other denominators produce recurring decimals. M-Convert's converter detects recurring patterns and displays them correctly.
Number bases
The converter supports bases 2 through 36, using 0–9 followed by A–Z for digits 10–35. Common uses include binary (2), octal (8), decimal (10), and hexadecimal (16). The converter handles arbitrarily large integers up to JavaScript's safe integer limit (2⁵³ − 1).
Roman numerals
Roman numerals use subtractive notation (IV for 4, IX for 9, XL for 40, etc.). The converter handles the standard range up to 3999 (MMMCMXCIX); larger values historically used overbars and are not universally standardized.