Converters
Convert between data formats, units, colors and encodings. Fast, accurate, no upload required for client-side formats.
Air Fryer Converter
Convert any conventional oven recipe to air fryer settings. Lower the temperature by 25 F and cut the cook time by about 20 percent automatically.
Baker's Percentage Calculator
Turn a bread formula into grams with baker's percentages. Flour is 100 percent, enter water, salt and yeast percents to get weights and hydration.
Baking Pan Converter
Swap one baking pan for another and scale the batter to fit. Compares pan areas for round, square and rectangular pans and gives a batter scale factor.
Binary to Decimal
Convert binary to decimal online. Paste any binary number, with or without spaces, and get the exact base-10 value instantly. Runs in your browser.
Binary to Hex
Convert binary to hexadecimal online. Paste a binary number and get exact hex, with optional uppercase. Handles huge values. Runs in your browser.
Binary Translator
Translate text to binary and binary back to text online. UTF-8 accurate, handles emoji and accents, with a copy button. Runs in your browser, nothing uploaded.
Brine Calculator
Work out how much salt to add to a wet brine by weight. Enter the water in grams and a salt percent to get the grams of salt and total brine weight.
Butter Converter
Convert butter between sticks, cups, tablespoons, grams and ounces. One US stick equals half a cup, 8 tablespoons, 4 ounces or 113.4 grams.
Cake Serving Calculator
Estimate how many servings a cake pan yields. Pick round, square or rectangle and a party or wedding slice to get servings from the pan area.
Candy Temperature Altitude Calculator
Adjust candy and deep fry target temperatures for altitude. Subtract about 1 F for every 500 feet of elevation to hit the right stage.
Celsius to Fahrenheit
Convert Celsius to Fahrenheit instantly. Type a temperature in C and get F, with the formula and a quick reference table. Runs in your browser.
Centimeters to Inches
Convert centimeters to inches instantly. Type a length in cm and get inches, with the formula and a quick reference table. Runs in your browser.
Coffee Ratio Calculator
Work out the coffee to water ratio for the perfect brew. Enter any two of water, coffee or ratio and the golden ratio calculator solves the third.
Color Converter
Convert any color between HEX, RGB, HSL, HSV and CMYK at once. Paste a hex, rgb(), hsl() or CSS color name and copy every format. Runs in your browser.
Color Mixer
Mix two hex colors online and get the blend. Set the mix ratio with a slider to find the perfect in-between color, then copy the hex result.
Color Name Finder
Find the nearest CSS color name for any hex or RGB value, or look up a color by name. See the closest match and how far off it is. Free and private.
Color Shades Generator
Generate tints and shades from one hex color online. Pick a base color and get lighter and darker steps toward white and black, ready to copy.
Complementary Color Calculator
Find the complementary color of any hex code online, plus triadic and analogous colors. Pick a color and get a matching palette to copy.
Cooking Converter
Convert cooking measurements between cups, tablespoons, grams, ounces and more. Switch volume to weight for flour, sugar, butter and other staples.
Cooking Measurement Converter
Convert cooking measurements between cups, tablespoons, ml and more. Convert a volume to grams by ingredient using a built in density table. Free.
CSS Unit Converter
Convert between CSS units px, rem, em and pt online. Set the root font size, enter a value, and get the result in every unit instantly.
CSV to HTML Table
Convert CSV data into a clean HTML table. Handles quoted fields, commas and escapes, with an optional header row, table class and minified output.
CSV to JSON
Convert CSV to JSON online. Turn spreadsheet rows into clean JSON objects or arrays, with smart number and boolean typing. Free tier plus API.
CSV to Markdown
Convert CSV data into a clean GitHub-flavored Markdown table. Handles quoted fields, commas, and pipes, with column alignment. Free, fast and private.
CSV to SQL
Convert CSV to SQL INSERT statements online. Set a table name, pick a delimiter, and get clean, ready to run inserts. Fast and runs in your browser.
CSV to TSV
Convert CSV to TSV online. Paste comma-separated data and get clean tab-separated output, with quoted commas handled. Runs in your browser.
CSV to XML
Convert CSV to XML online. Paste CSV and get clean XML with the header row as element names, quoted commas handled and special characters escaped. In browser.
Decimal to Binary
Convert decimal numbers to binary online. Type a whole number and get its base-2 value instantly, even for very large numbers. Runs in your browser.
Decimal to Hex
Convert decimal to hexadecimal online. Type any whole number and get the hex value instantly, with optional uppercase and 0x prefix. Runs in your browser.
Decimal to Octal
Convert decimal to octal online. Paste any non-negative whole number and get the exact base-8 value instantly. Runs in your browser.
Fahrenheit to Celsius
Convert Fahrenheit to Celsius online. Type any temperature in F and get the exact value in C instantly, with a handy reference table. Runs in your browser.
Feet to Meters
Convert feet to meters instantly using the exact factor 0.3048. Type a length, edit either box to convert both ways, and read a quick reference table.
Gallons to Liters
Convert US gallons to liters instantly. Type a volume in gallons and get liters, with the formula and a quick reference table. Runs in your browser.
Ganache Ratio Calculator
Calculate the cream for chocolate ganache by use. Pick truffle, frosting, glaze or sauce to get the cream weight and total in grams.
GB to MB
Convert gigabytes to megabytes instantly. Type a value in GB and get MB using the binary standard where 1 GB = 1024 MB. Runs in your browser.
GPS Coordinate Converter
Convert GPS coordinates between decimal degrees, degrees minutes seconds and degrees decimal minutes. Paste any format, get map links. Runs in your browser.
Gradient Generator
Generate CSS gradient code from color stops online. Pick colors, set the angle, switch between linear and radial, then copy the gradient.
Grams to Ounces
Convert grams to ounces instantly. Type a weight in g and get oz, with the formula and a quick reference table. Runs in your browser.
Hex to ASCII
Convert hex to ASCII text and text to hex online. Tolerates spaces and 0x prefixes, supports UTF-8, with uppercase and separator options. Free and private.
Hex to Binary
Convert hex to binary online. Paste a hexadecimal value, with or without 0x, and get the binary output instantly. Optional 4-bit padding. Runs in your browser.
Hex to Decimal
Convert hex to decimal online. Paste a hexadecimal value, with or without a 0x prefix, and get the exact base 10 number. Runs in your browser.
HEX to HSL
Convert a HEX color to HSL online. Paste a hex code like #3b82f6 and get the hue, saturation and lightness instantly. Runs in your browser.
HEX to RGB
Convert HEX color codes to RGB online. Paste a hex value like #ff0000 and get the rgb() string instantly. Supports shorthand. Runs in your browser.
HSL to HEX
Convert HSL colors to HEX instantly. Paste hsl(217, 91%, 60%) or 217,91,60 and get the #hex code, with a live swatch. Runs in your browser.
HSL to RGB
Convert HSL colors to RGB instantly. Paste hsl(h, s%, l%) or plain h,s,l values and get an rgb() string with a live color swatch. Runs in your browser.
HTML to Markdown
Convert HTML to clean Markdown in your browser. Headings, bold, italic, links, images, lists, blockquotes and code, with entities decoded.
Inches to Centimeters
Convert inches to centimeters instantly. Type a length in inches and get cm, with the formula and a quick reference table. Runs in your browser.
INI to JSON
Convert INI config to JSON online. Paste an INI file and get clean, nested JSON with sections as objects. Runs entirely in your browser.
JSON to CSV
Convert JSON to CSV online. Paste an array of objects and get clean, spreadsheet-ready CSV with the right headers. Runs in your browser.
JSON to Kotlin
Convert JSON to Kotlin data classes online. Paste JSON and get typed data class declarations with inferred Int, Double, List and nested types. In browser.
JSON to PHP Array
Convert JSON to a PHP array online. Paste JSON and get a clean array() or short [] literal with correct nesting, quoting and types. Runs in your browser.
JSON to Python Dict
Convert JSON to a Python dict online. Paste JSON and get a valid dict and list literal with True, False, None and proper quoting. Runs in your browser.
JSON to SQL
Convert JSON to SQL INSERT statements online. Paste an array of objects, set a table name, and get ready-to-run INSERTs. Runs in your browser.
JSON to TOML
Convert JSON to TOML online. Paste a JSON object and get clean TOML with tables and arrays of tables. Runs in your browser, nothing is uploaded.
JSON to XML
Convert JSON to XML online. Paste JSON and get clean, indented XML with a custom root element. Special characters are escaped. Runs in your browser.
JSON to YAML
Convert JSON to YAML online. Paste JSON and get clean, readable YAML with 2-space indentation and no line wrapping. Fast, free and runs in your browser.
JSONL to CSV
Convert JSONL, one JSON object per line, into CSV and back. Builds a union header, quotes special characters and round-trips cleanly. Free and private.
Kilograms to Pounds
Convert kilograms to pounds instantly. Type a mass in kg to get lb, edit either box to convert both ways, and read a quick reference table. Runs locally.
Kilometers to Miles
Convert kilometers to miles instantly. Type a distance in km and get miles, with the formula and a quick reference table. Runs in your browser.
KM/H to MPH
Convert km/h to mph instantly. Type a speed in kilometers per hour and get miles per hour, with the formula and a quick reference table. Runs in your browser.
Liters to Gallons
Convert liters to US gallons instantly. Type a volume in liters and get gallons, with the formula and a quick reference table. Runs in your browser.
MB to GB
Convert megabytes to gigabytes instantly. Type a value in MB and get GB using binary units where 1 GB equals 1024 MB. Runs in your browser.
Meat Cooking Time Calculator
Estimate roast cooking time by weight. Enter the pounds and pick turkey, beef, chicken or pork to get the total time as hours and minutes.
Meters to Feet
Convert meters to feet instantly. Type a length in meters and get feet, with the formula and a quick reference table. Runs in your browser.
Miles to Kilometers
Convert miles to kilometers instantly. Type a distance in miles and get km, with the exact formula and a quick reference table. Runs in your browser.
MPH to KM/H
Convert miles per hour to kilometers per hour instantly. Type a speed in mph and get km/h, with the formula and a quick reference. Runs in your browser.
NDJSON to JSON
Convert NDJSON or JSONL to a JSON array and back online. Parses one object per line, skips blanks, and reports the line on a parse error. In your browser.
Number Formatter
Format any number with thousands separators, fixed decimals, custom separators and a prefix or suffix. Supports US and European styles. Free and private.
Ounces to Grams
Convert ounces to grams instantly. Type a weight in oz and get grams, with the formula and a quick reference table. Runs in your browser.
Oven Temperature Converter
Convert oven temperatures between Celsius, Fahrenheit and gas mark instantly. Get all three values plus a plain description like moderate or hot oven.
Pace Converter
Convert running pace to speed and back. Enter min per km or mile, or km/h or mph, and see all four at once. Great for race planning. Free and private.
Pizza Dough Calculator
Size pizza dough for any number of balls. Set ball weight and hydration to get flour, water, salt, yeast and oil in grams using baker's percentages.
Pounds to Kilograms
Convert pounds to kilograms instantly. Type a weight in lb and get kg, with the formula and a quick reference table. Runs in your browser.
Properties to JSON
Convert Java .properties to JSON and back online. Parses key=value and key:value, comments, escapes and line continuations. Runs in your browser.
Random Color Generator
Generate random hex colors and palettes in one click. See each color with its hex code and copy it instantly. Free, private and runs in your browser.
Recipe Scaler
Scale a recipe up or down. Paste your ingredients, set a multiplier or new serving size, and get recalculated amounts with tidy fractions. Free and private.
RGB to HEX
Convert RGB to HEX online. Paste rgb(255, 0, 0) or 255,0,0 and get the matching hex color code instantly. Runs in your browser.
RGB to HSL
Convert RGB colors to HSL instantly. Paste an rgb() value and get hue, saturation and lightness, with a live preview. Runs in your browser.
Salt Conversion Calculator
Convert salt between table, kosher and sea salt. Because crystal sizes differ, equal teaspoons salt differently. Get the equivalent that keeps the saltiness.
Shoe Size Converter
Convert shoe sizes between US, UK, EU and centimetres for men and women. Pick a system and size to see the matching sizes instantly. Free and private.
Slow Cooker Converter
Convert a conventional cook time into slow cooker hours on low or high. Uses the standard crock pot timing bands so stews and roasts come out right.
Sourdough Starter Calculator
Calculate sourdough starter feeding amounts for a target quantity. Set your starter to flour to water ratio and get exact grams of each.
Spreadsheet for Big Data
Open and explore multi-GB CSV and Parquet files with millions of rows in your browser. Sort instantly, nothing uploaded. Powered by DuckDB-WASM.
SQL to JSON
Convert SQL INSERT statements to JSON online. Paste your inserts and get a clean JSON array of objects. Fast, free and private in your browser.
TOML to JSON
Convert TOML to JSON online. Paste a Cargo.toml or config file and get clean JSON instantly. Runs in your browser, nothing is uploaded.
TSV to JSON
Convert TSV to JSON online. Turn tab-separated rows into clean JSON objects or arrays, with smart number and boolean typing. Runs in your browser.
Turkey Thawing Time Calculator
Work out how long to thaw a turkey by weight. Refrigerator thawing uses about 6 hours per pound and cold water about 30 minutes per pound.
Unix Timestamp Converter
Convert a Unix epoch timestamp to a human date, or a date to a timestamp. Auto-detects seconds and milliseconds. Runs in your browser.
Water Bath Canning Calculator
Adjust boiling water bath canning time for altitude using the USDA chart. Enter the recipe minutes and elevation to get the total time.
Words to Numbers
Convert English number words to digits online. Type words like 'two thousand five hundred' and get 2500. Handles hyphens, 'and', hundreds and millions.
XML to JSON
Convert XML to JSON online. Paste XML and get clean JSON: attributes, repeated elements as arrays, CDATA and entities handled. Runs in your browser.
YAML to CSV
Convert YAML to CSV online. Paste a YAML list of records and get a clean CSV with a header row and the delimiter you choose. Runs in your browser.
YAML to JSON
Convert YAML to JSON online. Paste YAML and get clean, pretty-printed JSON with the indentation you choose. Runs entirely in your browser.
Yeast Conversion Calculator
Convert yeast between active dry, instant and fresh by weight. Enter grams of one type to get the equivalent amount of the other two for your recipe.
Yeast Converter
Convert between active dry, instant and fresh yeast by weight. Instant is 0.75x active dry and fresh is 2x active dry, with all three shown at once.