100% in-browser
Converters Tools
Convert between units, number bases, time formats, colors, and text encodings with these free browser-based converters. Fast, accurate, and completely private — nothing is uploaded.
⏱
Timestamp Converter
Convert Unix timestamps to human dates and back, in your local time zone.
◐Color Converter
Convert colors between HEX, RGB and HSL with a live preview.
0xNumber Base Converter
Convert numbers between binary, octal, decimal and hexadecimal.
↔Unit Converter
Convert length, mass, temperature, data and speed units instantly.
ⅫRoman Numeral Converter
Convert between Roman numerals and numbers from 1 to 3999, in either direction.
№Number to Words
Spell any number out in English words, including decimals and negatives.
32Base32 Encoder/Decoder
Encode text to Base32 or decode Base32 back to text, per RFC 4648.
⬡Hex ↔ Text
Convert text to hexadecimal bytes and decode hex back to text.
AᵈASCII Table
Browse and search the full 0–127 ASCII table with decimal, hex, octal and names.
½Fraction to Decimal
Convert fractions to decimals and decimals back to a simple fraction.
10ⁿScientific Notation Converter
Convert between plain decimal numbers and scientific (E) notation.
pxCSS Unit Converter
Convert a CSS length between px, rem, em, pt, pc, in and cm.
∠Angle Converter
Convert angles between degrees, radians, gradians and turns.
°GPS Coordinate Converter
Convert coordinates between decimal degrees and degrees-minutes-seconds.
ⓘIP Address Converter
Convert an IPv4 address to integer, hex and dotted binary, and back.
⛓Text to Data URI
Wrap text, CSS, SVG, HTML or JSON into a data: URI.
🥄Cooking Measurement Converter
Convert between cups, tablespoons, teaspoons, fluid ounces, millilitres and litres.
⛽Fuel Economy Converter
Convert fuel economy between US MPG, UK MPG, L/100km and km/L at once.
B→Byte Size Humanizer
Turn a byte count into a human-readable size and parse a size string back to bytes.
⏱→Seconds to Duration
Convert a number of seconds into a readable duration and parse a duration back to seconds.
b·nArbitrary Base Converter
Convert whole numbers between any bases from 2 to 36, with exact BigInt math.
ΩResistor Color Code
Decode a 4-band resistor color code into its resistance value and tolerance.
♪Note ↔ Frequency
Convert a musical note to its frequency and find the nearest note for any frequency.
🌡Color Temperature to RGB
Convert a Kelvin color temperature into an approximate RGB color and hex code.