Utility

38 free online Utility tools — fast, private and browser-based. No signup, no limits.

• Password Generator — Generate strong, secure passwords with custom rules
• QR Code Generator — Generate QR codes for any text, URL or data instantly
• Stopwatch — Precise stopwatch with lap times and centisecond display
• Countdown Timer — Countdown timer with hours, minutes and seconds
• Calculator — Simple and clean calculator for quick arithmetic calculations
• Random Number Generator — Generate random numbers within a custom range
• Random Name Generator — Generate random first and last names for testing and placeholder data
• Temperature Converter — Convert between Celsius, Fahrenheit and Kelvin instantly
• Unit Converter — Convert length, weight and volume between metric and imperial units
• Pomodoro Timer — 25/5/15 Pomodoro focus timer with animated SVG progress ring
• Aspect Ratio Calculator — Calculate and lock aspect ratios — find width or height from any ratio
• File Size Converter — Convert file sizes between bytes, KB, MB, GB, TB, KiB, MiB and GiB
• Timezone Converter — Convert times between world timezones with live mode
• Random Picker — Pick random items from a custom list — perfect for decisions and raffles
• Number to Words — Convert any number to words in English or Spanish instantly
• Reading Time Estimator — Estimate reading time for any text with adjustable reading speed
• Date Countdown — Count down to any future date and time with a live seconds display
• Coin Flipper — Flip a virtual coin with statistics tracking and flip history
• Dice Roller — Roll d4, d6, d8, d10, d12, d20 and d100 dice with history
• Online Notepad — Quick scratchpad with auto-save, word count and download as text
• Word Wrap — Wrap text at a specific column width with word or character boundary options
• Typing Speed Test — Test your typing speed in WPM with accuracy tracking
• Barcode Generator — Generate Code 39 barcodes from text and download as PNG
• Screen & Browser Info — View real-time screen resolution, window size, browser and device details
• LocalStorage Manager — View, add, edit and delete localStorage items with size tracking
• Regex Pattern Library — Browse 30+ common regex patterns for email, URL, phone, date and more
• Keyboard Tester — Press any key to see its name, keyCode, code and modifier state
• Color Blindness Simulator — Simulate how colors appear under 4 types of color vision deficiency
• Random Quote Generator — Generate random quotes by category: motivational, programming, wisdom and more
• Sleep Cycle Calculator — Calculate optimal wake-up times based on 90-minute sleep cycles
• Calorie Calculator — Calculate daily calorie needs using the Mifflin-St Jeor equation
• Credit Card Validator — Validate credit card numbers using the Luhn algorithm and detect card type
• IBAN Validator — Validate IBAN numbers with mod-97 check and country format verification
• Grade Calculator — Calculate weighted course grade from assignments and exams
• Meeting Cost Calculator — Calculate the real cost of meetings based on attendees and hourly rate
• Invoice Calculator — Create line-item invoices with tax calculation and formatted preview
• Body Fat Calculator — Calculate body fat percentage using the US Navy method
• Water Intake Calculator — Calculate your recommended daily water intake based on weight and activity

Text · JSON · Developer · Image · Math · Finance · Color · Security · Network · CSS · Data · Science · Time