Modern Toolbox
Simple and fast free online tools. No signup required.
SSH Key Generator
Generate RSA, Ed25519, ECDSA SSH key pairs for secure authentication
Try it →Hash Calculator
Calculate MD5, SHA-1, SHA-256, SHA-512, SHA3, RIPEMD, Bcrypt hashes for text and files
Try it →Calculator
Average calculator, standard deviation calculator, GPA calculator, percentage calculator, programmer calculator, and simple scientific calculator for everyday math
Try it →Health Tools
BMI calculator, skeletal muscle index calculator, waist-to-hip ratio calculator, BMR and TDEE calculator, and body fat (tape estimate) calculator for body metrics and energy estimates
Try it →Time Tools
Alarm clock, stopwatch, countdown timer, and calendar for time management
Try it →Image Tools
Image Compressor, Format Converter, Images to Animated GIF, Image Editor, Paint Board, JPG Converter, and GIF Converter hub for compressing, converting, merging frames to GIF, editing, and drawing
Try it →JPG Converter
Convert HEIC, HEIF, AVIF, BMP, PNG, SVG, TIFF, WEBP, PSD, JFIF, ICO, AI, DNG, CR2, CR3, TGA, and PDF to JPG format
Try it →GIF Converter
GIF Converter hub—JPG to GIF (multiple JPEGs → one animated GIF) and more format routes over time. Browser-only gif.js encoding; use Image Tools for mixed image types.
Try it →PDF Tools
Image to PDF: combine JPG, PNG, HEIC, HEIF, WEBP, AVIF, BMP, TIFF, and other images into one PDF. Format-specific converters also available. Zero margins in fit mode, local processing.
Try it →PDF Converter
Convert JPG, HEIC, HEIF, PNG, WEBP, AVIF, BMP, TIFF, and images to PDF. Zero white margins, preserved aspect ratio. Combine multiple images into one PDF.
Try it →Text Tools
String comparison, text case converter, and text editor for comparing texts, converting case, and writing notes
Try it →Random Tools
Password generator and random number generator for creating secure passwords and random numbers
Try it →SEO Tools
Favicon generator, meta tag generator, robots.txt generator, and sitemap generator for website optimization
Try it →Language Tools
English Alphabet, Hiragana, Katakana, Hangul charts, Hiragana-Katakana converter, Hangul↔kana pronunciation tools, and Hiragana/Katakana-to-Hangul (inverse) for language learning
Try it →Developer Tools
ASCII converter, Base64 encoder/decoder, code formatter, color picker, CSS sprites, number system converter, QR code generator and reader
Try it →Unit Converter
Convert length, weight, temperature, area, volume, speed, time, digital storage, pressure, energy, and angle units. Metric and imperial support.
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