Converters
Free online converters that run entirely in your browser. Convert CSV to JSON and back, transform JSON to YAML, convert colors and units, and switch number bases instantly. No uploads, no account, and no waiting.
All converters
Acceleration Converter
Convert acceleration between m/s², ft/s², g-force, mph/s, and more.
Angle Converter
Convert an angle between degrees, radians, gradians, turns, arcminutes and arcseconds, with a degrees-minutes-seconds breakdown.
Area Converter
Convert area between metric and imperial units instantly.
Binary to Decimal Converter
Convert a binary number to its decimal value, with hexadecimal and octal readouts.
Binary to Text
Turn 0s and 1s back into readable text, grouped automatically into bytes.
Blood Sugar Converter
Convert blood glucose between mg/dL and mmol/L with a live, two-way field.
Celsius to Fahrenheit Converter
Convert Celsius to Fahrenheit instantly, and edit either side to convert back.
Clothing Size Converter
Convert clothing sizes between US, UK, EU, IT, FR, AU, and alpha sizing.
CM to Inches Converter
Convert centimeters to inches with a live, two-way field.
Color Converter
Type or pick a color and get HEX, RGB, HSL, HSV, and CMYK side by side, with a live swatch preview.
Cooking Measurement Converter
Convert between cups, tablespoons, teaspoons, milliliters, fluid ounces, and grams for common ingredients.
CSV to HTML Table
Paste CSV or TSV and get a clean HTML table with safely escaped cells. The delimiter is detected automatically, with header, border, class, and pretty or minified controls.
CSV to JSON
Paste CSV and get a clean JSON array of objects, with header detection and automatic number and boolean typing.
CSV to Markdown Table
Paste CSV or TSV and get a clean GitHub-flavored Markdown table. The delimiter is detected automatically, with header and column-alignment controls.
CSV to SQL Insert
Paste CSV or TSV and get ready-to-run SQL INSERT statements, with header-based columns, smart value quoting, and an optional CREATE TABLE.
CSV to TSV Converter
Convert CSV to tab-separated values, or switch direction to turn TSV back into CSV. Quoted fields, embedded commas, and ragged rows are all handled.
CSV to XML Converter
Paste or drop a CSV and get indented XML, with your own root and row element names.
Data Storage Converter
Convert between bits, bytes, kilobytes, megabytes, gigabytes, and binary units like KiB, MiB, and GiB.
Data Transfer Rate Converter
Convert data rate between Mbit/s, MB/s, Gbit/s, and more, with bit and byte units.
Decimal to Binary Converter
Convert a decimal number to binary, with hexadecimal and octal readouts and a grouped bit view.
Decimal to Fraction
Convert a decimal to an exact fraction in lowest terms, including repeating decimals.
Decimal to Hex Converter
Convert a decimal number to hexadecimal and hex back to decimal, with binary and octal shown for reference.
Decimal to Octal
Convert decimal to octal and back, with exact results for numbers of any length.
Density Converter
Convert density between kg/m³, g/cm³, lb/ft³, lb/in³, and more.
Energy Converter
Convert energy between joules, calories, watt-hours, BTU, and more.
Fahrenheit to Celsius
Turn a Fahrenheit reading into Celsius as you type, with oven and weather landmarks.
Flow Rate Converter
Convert volumetric flow between L/min, m³/h, GPM, CFM, and more.
Force Converter
Convert force between newtons, kilogram-force, pound-force, dynes, and more.
Frequency Converter
Convert between hertz, kHz, MHz, GHz, THz, rpm, and bpm at once.
Fuel Economy Converter
Convert fuel economy between MPG, L/100km, km/L, and mi/L.
Hex to Decimal Converter
Convert a hexadecimal number to decimal, with binary and octal readouts.
Hex to Text
Turn hexadecimal back into readable text, with tolerant parsing for messy hex.
HTML to Markdown
Convert HTML into clean Markdown live as you type, with control over heading, bullet, and code styles, right in your browser.
Illuminance Converter
Convert light levels between lux, foot-candles, phot, and nox with a live, two-way field.
INI to JSON Converter
Paste an INI or config file and get clean JSON instantly. Sections nest, comments are stripped, and quoted values stay exact.
JSON to CSV
Flatten a JSON array of objects into clean CSV, with nested keys expanded to dotted columns and your choice of delimiter.
JSON to TOML Converter
Convert a JSON object into TOML with nested tables, arrays of tables, and your choice of indentation, all in your browser.
JSON to XML Converter
Turn a JSON document into pretty-printed, well-formed XML, with control over the root element, array item names, and whether values become elements or attributes.
JSON to YAML
Convert JSON to YAML and YAML back to JSON, in both directions, with your choice of indentation.
Kilometers to Miles
Turn a kilometer figure into miles as you type, with race distances and speed limits.
Length Converter
Convert length and distance between metric and imperial units.
Markdown to HTML
Convert markdown to clean HTML with a live preview and a raw code view, right in your browser.
Metric Prefix Converter
Convert a number between SI prefixes: kilo, mega, giga, milli, micro, and more.
Miles to Kilometers Converter
Convert miles to kilometers instantly, and edit either side.
Morse Code Translator
Convert text to and from International Morse code, and play it back at an adjustable speed and pitch.
NDJSON / JSON Lines to JSON
Paste newline-delimited JSON and get one clean JSON array, or flatten an array back to one object per line.
Note Frequency Converter
Convert musical notes to frequency in hertz and back, with adjustable tuning and cents.
Number Base Converter
Convert a number between binary, octal, decimal, and hexadecimal, all four shown at once.
Number to Words Converter
Write any number in words, so 1234 becomes one thousand two hundred thirty-four, with ordinal and dollars-and-cents forms.
Power Converter
Convert watts, kilowatts, horsepower, and BTU per hour in one place.
Pressure Converter
Convert between pascals, bar, psi, atmospheres and more. Type once and every unit updates.
Radiation Dose Converter
Convert radiation dose between sieverts, millisieverts, microsieverts, rem, and millirem.
Ring Size Converter
Convert ring sizes between US, UK, Japan, and millimetres, with a full size chart.
Roman Numeral Converter
Convert a number to Roman numerals or read a Roman numeral back to a number, both directions live.
Scientific Notation Converter
Convert any number to scientific, E, and engineering notation, and back to plain decimal.
Shoe Size Converter
Convert shoe sizes between US, UK, EU, and foot length in cm.
Speed Converter
Convert any speed between mph, km/h, m/s, knots, ft/s and mach at once.
Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin, and Rankine at once.
Text to Binary
Convert text to its binary, hex, or decimal byte representation and back, live.
Text to Hex Converter
Convert text to hexadecimal and hex back to text, with your choice of separator, live.
Time Unit Converter
Convert time between seconds, minutes, hours, days, weeks, and years.
TOML to JSON Converter
Paste a TOML config and get clean JSON instantly, with duplicate-key detection and errors that point at the line.
Torque Converter
Convert torque between newton metres, foot-pounds, inch-pounds, and more.
TSV to CSV Converter
Paste tab-separated text and get clean, correctly quoted CSV, with a choice of comma or semicolon delimiter.
Typography Unit Converter
Convert type sizes between px, pt, em, rem, pica, mm, and more.
Unit Converter
Convert length, weight, temperature, and data sizes between units, live as you type.
Viscosity Converter
Convert dynamic viscosity between centipoise, pascal seconds, and poise with a live, two-way field.
Volume Converter
Convert between liters, milliliters, gallons, quarts, pints, cups, fluid ounces, and cubic units in one place.
Water Hardness Converter
Convert water hardness between ppm, grains per gallon, and German, French, and Clark degrees.
Weight Converter
Convert weight between kilograms, pounds, stone, ounces, and tons.
Wire Gauge Converter
Convert AWG wire gauge to millimetres, square millimetres, and resistance per kilometre.
Words to Number Converter
Convert a number written in English words into its numeric value.
XML to JSON
Paste XML and get JSON instantly, with attributes kept or ignored, indent control, and errors that point at the line.
YAML to JSON
Paste YAML and get JSON instantly, indented or minified, with parse errors that point at the line.
Frequently asked questions
- Do my files or data get uploaded anywhere?
- No. CSV, JSON, YAML, color, unit, and number-base conversions all happen locally in your browser. Your data is processed on your device and never sent to a server.
- Which converters are available?
- CSV to JSON, JSON to CSV, JSON to YAML, a color converter, a unit converter, and a number base converter, with more added over time.
- What color formats can the color converter handle?
- It converts between common web formats such as HEX, RGB, and HSL, so you can copy the value your stylesheet or design tool expects.
- Can I convert large CSV or JSON files?
- There are no artificial limits. Conversion is bounded only by your device's memory, so large datasets work as long as your browser has room to hold them.
- Are the converters free to use?
- Yes. Every converter is free, with no account, no sign-up, and no usage limits.