Converters
Free online converters for colors, temperature, number bases, Roman numerals and data formats like CSV to JSON. Instant, accurate and private.
5 converters
Convert colors, units, numbers and formats.
Popular
Color Converter
Convert colors between HEX, RGB and HSL.
Open tool
Temperature Converter
Convert Celsius, Fahrenheit and Kelvin.
Open tool
Number Base Converter
Convert binary, octal, decimal and hex.
Open tool
Roman Numeral Converter
Convert numbers to Roman numerals and back.
Open tool
Trending
CSV to JSON Converter
Turn CSV data into clean JSON.
Open tool
Frequently asked questions
Yes. Every tool is completely free, with no sign-up and no usage limits.
Tools run in your browser wherever possible, so your data stays on your device.
No installation is required — everything works instantly in your web browser.
Related categories
Text Tools
Count, convert, clean and compare text.
Developer Tools
Format, encode, hash and decode.
Finance Calculators
Loans, interest, discounts and tax.
Image Tools
Compress and optimize images privately.
Auto Tools
Decode VINs and run the numbers on your vehicle.
PDF Tools
Merge, split, rotate and convert PDFs privately.
SEO Tools
Generate meta tags, robots.txt and analyze content.