Utility Tools
Secure password creation, precise age calculations, and text structure counters.
All Utility Tools tools
Word Counter
Count words, characters, sentences, and paragraphs in your text.
Age Calculator
Calculate exact age in years, months, days, hours, and minutes.
Password Generator
Generate strong, secure passwords with custom length and options.
Unit Converter
Convert length, mass, volume, temperature, area, speed, time, and data units.
Character Counter
Count characters, words, sentences, and paragraphs with precision.
Percentage Calculator
Calculate percentages — find X% of Y, percentage change, and more.
BMI Calculator
Calculate your Body Mass Index with metric or imperial units.
Case Converter
Convert text between uppercase, lowercase, title case, sentence case, and more.
Random Number Generator
Generate random numbers within a range with count and uniqueness options.
List Randomizer
Shuffle, randomize, and pick from any list of items.
Color Contrast Checker
Check WCAG color contrast ratios between foreground and background colors.
Browser & Hardware Detector
Detect client browser engine, WebGPU/WebGL capabilities, screen resolution, and hardware concurrency.
Business Days & Working Days Calculator
Calculate exact calendar days and business days excluding weekends between dates. 100% private.
Client-Side PDF Merger
Combine multiple PDF files into a single document in seconds with 100% browser-based privacy.
PDF Splitter & Page Extractor
Split large PDF documents or extract custom page ranges locally inside your browser.
PDF to Image Converter
Convert PDF document pages into high-resolution PNG or JPG images with zero server uploads.
SI Measurement Standards & Cryptographic Entropy Guide
Precision utilities require rigorous adherence to international standards and robust mathematical algorithms. Our utility suite features high-precision unit conversions mapped directly against Bureau International des Poids et Mesures (BIPM) SI base factors, accurate age and date intervals accounting for leap centuries, and percentage increase/decrease financial calculators.
For security utilities, our password and passphrase engines employ the Web Cryptography API (crypto.getRandomValues) and the Electronic Frontier Foundation (EFF) 7,776-word Diceware lexicon to generate mathematically unpredictable passwords with over 64 bits of true entropy, guaranteeing resilience against offline dictionary and rainbow table attacks.