Free Online Converters: Images, Data, Units & Encoding
Change a format while keeping the information you need. Pick an image converter for web assets, CSV and JSON tools for structured data, or unit converters for measurements.
Image Converter
Convert images between PNG, JPG, and WebP formats
Base64 Encoder/Decoder
Encode and decode text to Base64 format
URL Encoder/Decoder
Encode and decode URLs for safe transmission
HTML Encoder/Decoder
Encode and decode HTML entities for safe display
Timestamp Converter
Convert between Unix timestamps and human dates
Unit Converter
Convert between different units of measurement
URL Shortener
Turn long URLs into short, shareable links instantly
CSV/JSON Converter
Convert between CSV and JSON formats easily
QR Code Decoder
Scan and decode QR codes from images
JSON to TypeScript Converter
Convert JSON objects to TypeScript interface or type definitions
Markdown to HTML Converter
Convert Markdown text to HTML with live preview
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal
Text Extractor (OCR)
Extract text from images using AI-powered OCR
YAML to JSON Converter
Convert YAML to JSON online — validate YAML syntax and get formatted JSON output instantly.
SVG to PNG Converter
Convert SVG files to PNG images
Image Resizer
Resize images to exact dimensions
Text to Binary
Convert text to binary and back
Text to ASCII Art
Convert text to ASCII art
Roman Numeral Converter
Convert between Roman and Arabic numerals
Bytes Converter
Convert between bytes, KB, MB, GB, TB
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin
HEX to RGB Converter
Convert HEX color codes to RGB values
Time Zone Converter
Convert time between different time zones
Length Converter
Convert between inches, cm, meters, feet
Weight Converter
Convert between kg, lbs, oz, grams
Speed Converter
Convert between mph, km/h, m/s, knots
Area Converter
Convert between sq meters, sq feet, acres, hectares
Volume Converter
Convert between liters, gallons, cups, ml
Energy Converter
Convert between joules, calories, BTU, kWh
JSON to CSV Converter
Convert JSON data to CSV format
JSON to XML Converter
Convert JSON data to XML format
CSV to SQL Converter
Convert CSV data to SQL INSERT statements
JSON to Go Struct
Convert JSON to Go struct definitions
JSON to Python Dict
Convert JSON to Python dictionary
cURL to Code Converter
Convert cURL commands to code in any language
JSON to YAML Converter
Convert JSON to YAML format online — paste JSON and get clean YAML output instantly.
Image Compressor
Compress images without losing quality
Biorhythm Tracker
Track your medication cycle and energy levels
Cron To Human
Cron To Human - Free online tool
HTML Entity Converter
Encode and decode HTML entities instantly
Number to Words Converter
Convert any number to written English words instantly — supports decimals, negatives, and currency
Choose by the task you need to finish
- Choose an output image format based on transparency, file size and browser support.
- Inspect a CSV delimiter and header row before converting records to JSON.
- Check the source and destination units before copying a converted measurement.