Number Converter
Free online number converters. Convert between binary, decimal, hexadecimal, octal, fractions, percentages, Roman numerals, scientific notation and more.
Number Converters
- ASCII, Hex, Binary, Decimal, Base64
- ASCII text to binary
- ASCII text to hex
- Base converter
- Binary converter
- Binary to ASCII text
- Binary to decimal
- Binary to hex
- Binary to octal
- Binary to string
- Date to Roman numerals
- Decimal to fraction
- Decimal to percent
- Decimal to binary
- Decimal to octal
- Decimal to hex
- Degrees to DMS
- DMS to degrees
- Degrees to radians
- Fraction to decimal
- Fraction to percent
- Hex/Decimal/Octal/Binary
- Hex to ASCII text
- Hex to binary
- Hex to decimal
- Hex to octal
- Octal to binary
- Octal to decimal
- Octal to hex
- Percent to decimal
- Percent to fraction
- Percent to ppm
- PPM to percent
- PPM to PPB
- PPM to PPT
- PPB to PPM
- PPT to PPM
- PPM converter
- Radians to degrees
- Roman numerals converter
- Scientific notation converter
- String to binary
Number Systems
Binary (Base 2) — Uses digits 0 and 1. Fundamental to digital electronics and computing.
Octal (Base 8) — Uses digits 0–7. Historically used in computing as a compact representation of binary.
Decimal (Base 10) — The standard number system using digits 0–9.
Hexadecimal (Base 16) — Uses digits 0–9 and letters A–F. Widely used in programming and memory addresses.
Roman Numerals — An ancient numeral system using letters I, V, X, L, C, D, M. Supports numbers 1–3999.
Scientific Notation — Expresses numbers as a coefficient multiplied by a power of 10. E.g., 123456 = 1.23456 × 10⁵.
PPM (Parts Per Million) — A unit of concentration. 1 ppm = 0.0001% = 1000 ppb.
See also
NUMBER CONVERSION
- ASCII, Hex, Binary, Decimal, Base64
- ASCII text to binary
- ASCII text to hex
- Base converter
- Binary converter
- Binary to ASCII text
- Binary to decimal
- Binary to hex
- Binary to octal
- Binary to string
- Date to Roman numerals
- Decimal to fraction
- Decimal to percent
- Decimal to binary
- Decimal to octal