Free Online Toolbox
Fast, simple, and secure online tools. No installation needed - just open your browser.
PDF Tools
Merge, split, and convert PDF files
Image Tools
Compress, resize, crop, rotate, and convert images
Image to Base64
Convert images to Base64 data URIs
Markdown Preview
Preview and edit Markdown in real-time
CSV Viewer & Editor
View, edit, sort and export CSV files
Word & Character Counter
Count words, characters, sentences and estimate reading time
Lorem Ipsum Generator
Generate placeholder text for design and development
Instrument Tuner
Tune your instrument with precision using your microphone
Metronome
Keep perfect tempo with a customizable metronome
Online Piano
Play piano with realistic sound using mouse, touch, or keyboard
Circle of Fifths
Interactive circle of fifths — explore keys, scales, and chord progressions
Chord Identifier
Select notes to identify chords — by piano or text input
JSON Formatter
Beautify, minify, and validate JSON data
Base64 Encoder / Decoder
Quickly encode text to Base64 or decode Base64 back to text.
QR Code Generator
Generate QR codes quickly for URLs, text, WiFi, and more.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes
URL Encoder / Decoder
Encode and decode URLs
Text Diff
Compare differences between two texts
Regex Tester
Test and debug regular expressions
Password Generator
Generate strong, secure random passwords
JWT Decoder
Decode and inspect JSON Web Tokens
UUID Generator
Generate random UUID/GUID identifiers
JSON ↔ YAML
Convert between JSON and YAML formats
SQL Formatter
Format and beautify SQL queries
Cron Expression Parser
Parse and visualize cron schedule expressions
CSS/JS Minifier
Minify and beautify CSS and JavaScript code
IP Subnet Calculator
Calculate subnets, CIDR, and network ranges
Random Hex Generator
Generate random hexadecimal numbers with custom length and count
Color Picker
Pick and convert color formats
Unit Converter
Convert between common measurement units
Case Converter
Convert text between camelCase, snake_case, kebab-case and more
Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal
Timestamp Converter
Convert between Unix timestamps and human-readable dates
ASCII / Unicode Lookup
Search and look up ASCII and Unicode character codes
Mortgage Calculator
Calculate monthly mortgage payments with amortization schedule
Compound Interest Calculator
Calculate compound interest with regular contributions
Loan / EMI Calculator
Calculate EMI payments for any loan type
Percentage Calculator
Calculate percentages, increases, decreases, and differences
Retirement Calculator
Plan your retirement savings and estimate future income
Tip Calculator
Calculate tip amount and split the bill
ROI Calculator
Calculate Return on Investment and annualized returns
Salary ↔ Hourly Converter
Convert between annual salary and hourly rate
Lightning Fast
All tools run locally in your browser - no server round-trips needed.
Privacy First
Your data never leaves your browser. Everything is processed locally.
Completely Free
All tools are free to use. No sign-up or registration required.