🔄Converters
Converters turn data from one format into another — units of measure, number bases, colors, dates, currencies, JSON, CSV, YAML and more. They are the right tool when you have information in one format and need it in another, with nothing to install and no loss of precision.
122 tools
LESS to CSS Converter
Strips LESS @variables and // comments producing approximate CSS suitable for visual checking.
CSS to LESS Converter
Convert CSS stylesheets to LESS syntax, turning custom properties (--var) into @variables. Modernize your CSS and copy the ready-to-use code.
Stylus to CSS Converter
Explains converting Stylus templates (optional braces/colons) into standard CSS with examples.
CSS to Stylus Converter
Convert plain CSS into the concise Stylus syntax, without braces or semicolons. Paste your CSS and copy the Stylus to modernize your project styling.
JSONP to JSON Converter
Strips the callback wrapper of a JSONP response leaving only the JSON contained inside the parentheses.
BSON to JSON (text) Converter
Explains differences between binary BSON and JSON with a type table and textual conversion examples.
CBOR to JSON (text) Converter
Explains CBOR (RFC 8949), its types and how to represent compact binary values in textual JSON.
MessagePack to JSON (text) Converter
Explains the MessagePack binary format, its advantages and how to translate it into textual JSON.
YAML to NDJSON Converter
Explains how to represent YAML lists as NDJSON (one JSON object per line) with practical examples.
Cups to Grams (Sugar)
Convert cups of granulated sugar to grams instantly (1 cup ≈ 200 g). Nail your cake and dessert recipes even without a kitchen scale.
Cups to Grams (Flour)
Convert cups of all-purpose flour to grams instantly (1 cup ≈ 120 g). Nail your bread and cake recipes even without a kitchen scale.
Gas Mark to Celsius Converter
Convert gas oven settings (gas mark, scale 1 to 9) to degrees Celsius. Follow international recipes with the right temperature on your stove.
BPM to Delay (ms)
Convert your track's BPM into delay times (1/4, 1/8 and 1/16) in milliseconds. The quick way to dial in tempo-synced delay and reverb when producing music.
MIDI Number to Note Converter
Convert a MIDI note number (0 to 127) into the matching musical note with octave (e.g. 60 = C4). Handy for programming synths and virtual instruments.
Note to MIDI Number
Convert a musical note (like A4 or C#3) into its MIDI note number. Handy when programming synths, sequencers and virtual instruments.
Cents Difference Calculator
Calculate the difference in cents (hundredths of a semitone) between two frequencies. An essential tool for fine instrument tuning, microtonality and music study.
RGB to CIELAB Converter
Convert colors between RGB and CIELAB (via XYZ, D65 illuminant). Useful for graphic design, color management and measuring color differences accurately.
Base45 Encoder/Decoder
Encode and decode data in Base45, the format used in EU digital COVID certificates so they fit inside QR codes.
Base58 (Bitcoin)
Encode and decode text in Base58 using the Bitcoin alphabet, which drops the ambiguous characters 0, O, I and l. Handy for keys and addresses.
Base62 Converter (Short URLs)
Convert decimal numbers to Base62 (0-9, A-Z, a-z) and back. This is the scheme URL shorteners use to turn IDs into short codes.
Ascii85 (Adobe)
Encode and decode data in Ascii85 (Base85), the compact format used in PostScript and PDF, with the Adobe <~ and ~> delimiters.
Quoted-Printable
Encode and decode text in Quoted-Printable (RFC 2045), the format used in email to represent accents and special characters in plain ASCII.
YAML to JSON Converter
Convert YAML to JSON right in your browser, with no data sent to any server. Paste the YAML and copy ready-to-use JSON for APIs, configs and scripts.
JSON to Markdown Table Converter
Convert an array of JSON objects into a formatted Markdown table, with header and alignment. Paste the JSON and copy a table ready for READMEs and docs.
JSON to HTML Table Converter
Convert an array of JSON objects into a ready HTML table, with header and rows. Paste the JSON and copy the code to drop straight into your page or email.
Yards to Meters Converter
Convert yards to meters instantly (1 yard = 0.9144 m). Handy for translating football field measurements, fabric lengths and imperial distances.
Horsepower to Watts Converter
Convert metric horsepower (PS) to watts instantly (1 PS = 735.5 W). Useful for comparing the power output of cars, motorcycles and machinery.
Bar to PSI Converter
Convert pressure from bar to PSI (pounds per square inch) instantly. Useful for tires, compressors, gauges and equipment using the imperial system.
L/100km to MPG Converter
Convert fuel economy from liters per 100 km to miles per gallon (MPG). Compare car efficiency between the European and US standards.
MPG to L/100km Converter
Convert fuel economy from miles per gallon (MPG) to liters per 100 km. Compare car efficiency between US and European standards.
Tire Pressure PSI to BAR Converter
Convert tire pressure between PSI and BAR instantly. Inflate your car or motorcycle tires with the right unit for safety and fuel economy.
Engine Displacement cc to L
Convert engine displacement between cubic centimeters (cc) and liters (L). Useful for comparing car and motorcycle engines and reading spec sheets.
Torque Nm to lb·ft Converter
Convert torque between newton-meters (Nm) and pound-feet (lb·ft) instantly. Handy for mechanics, bolt torque specs and imported car manuals.
HP to kW Converter
Convert engine power between HP (horsepower) and kW (kilowatts) instantly. Useful for comparing the power of cars, motorcycles and machines.
Speed to Running Pace Converter
Convert average speed (km/h) into running pace (minutes per km) instantly. Great for runners planning workouts, races and target finish times.
Average Glucose to HbA1c Converter
Convert estimated average glucose (eAG) in mg/dL into the estimated HbA1c value. Useful for tracking diabetes control between blood tests.
ISO Country Code Converter
Convert country codes between ISO 3166 formats (alpha-2, alpha-3 and numeric) and the country name. Useful for development, forms and databases.
4-Band Resistor Color Code
Find the value of a 4-band resistor from its color code: two digits, a multiplier and tolerance. Result in ohms, with the tolerance as a percentage.
Dog Age in Human Years
Convert your dog's age into human years using the science-based AVMA formula. Find your dog's real age by size and understand its life stage.
Gwei to ETH Converter
Convert values between gwei and ETH, the units of Ethereum. Essential for calculating gas fees and working with transactions on the ETH network.
Fresh to Dry Yeast Converter
Convert the amount of baking yeast between fresh and dry in your bread recipes. Get the rise right even when swapping the type of yeast you have on hand.
Butter to Oil Converter
Convert butter to oil (and back) in your recipes, adjusting the amount in the right ratio. Adapt cakes and dishes to the ingredient you have at home.
Egg Substitute Calculator
Find what to replace eggs with in vegan recipes (flax, applesauce, banana, aquafaba) and the right amount of each. Bake cakes and desserts without eggs.
Binary ↔ Hexadecimal Converter
Convert numbers between binary and hexadecimal without going through decimal. Shows nibble (4-bit) grouping.
Seconds to HH:MM:SS
Convert a number of seconds (integer or decimal) to HH:MM:SS.mmm format. Useful for video, audio and time tracking.
CSS px ↔ rem Converter
Convert between px and rem in CSS with a configurable root font base (default 16px). Essential for responsive, accessible layouts with scalable typography.
DOI → BibTeX Generator
Enter a DOI (e.g., 10.1145/3372297.3417223) and format as a template BibTeX key (no external calls). Useful as a starting point.
DOI → APA Citation (manual)
Manually format an APA 7th edition citation with authors, year, title, journal and DOI. No external call.
ISBN → Book Citation (manual)
Format book citation in APA, MLA, Chicago and ABNT from manual fields: author, year, title, edition, publisher and ISBN.
CSV → HTML Table
Convert CSV into a semantic HTML table with <thead> and <tbody>, escaping special characters. Optional custom CSS class.
CSV → JSON Lines
Convert CSV to JSONL (one JSON object per line). Common format in logs, ML pipelines and document databases.
JSON ↔ XML Converter
Convert between JSON and XML preserving attributes via @attr and text via #text, with pretty-print of the resulting XML.
Markdown ↔ WhatsApp Formatter
Converts Markdown into WhatsApp formatting (*bold*, _italic_, ~strikethrough~) and back, keeping lists, links and code blocks intact.
Excel Formula Translator (PT ↔ EN)
Translates Excel formulas between English and Portuguese function names, error values and argument separators, leaving strings and refs intact.
Brazilian Address Parser
Splits pasted Brazilian addresses into street, number, unit, neighborhood, city, state and postal code fields, with CSV and JSON export.
Fixed-Width ↔ CSV/JSON Converter
Converts fixed-width text files to CSV, TSV or JSON and back, with automatic column detection, a position map and per-line warnings.
Markdown ↔ Jira/Confluence Converter
Converts text between Markdown and Jira/Confluence wiki markup — headings, lists, tables, links, quotes and code blocks — in both directions.
cURL → PowerShell / wget Converter
Converts cURL commands into PowerShell Invoke-RestMethod, Invoke-WebRequest or wget, preserving method, headers, body, auth and redirects.
CSV ↔ vCard (.vcf) Batch Converter
Converts a CSV contact list into a multi-contact vCard (.vcf) file and back to CSV, with column mapping and vCard 3.0/4.0 output.
BR ↔ US Number Format Converter
Converts numbers in bulk between Brazilian (1.234,56) and US (1,234.56) formats, auto-detecting the decimal separator line by line.