Tools for teaching, learning, and academic research
Calculate your exact age in years, months, days, hours, minutes and seconds. Get your next birthday
Convert text to binary, hexadecimal, decimal, and octal formats (and vice versa). 100% free and private - a
Count characters, words, sentences, and paragraphs in real-time. 100% free and private - all counting happe
Calculate how your money grows with compound interest. See future value, total interest earned, and year-by
Set a customizable countdown timer with alarm. Perfect for cooking, workouts, studying, or any
Calculate and simplify fractions with step-by-step solutions. Add, subtract, multiply, and divide fractions
Calculate your Grade Point Average (GPA) for courses and semesters. Supports letter grades and numeric grad
Convert your JPG and PNG images to PDF documents. Upload multiple images, reorder them, and cre
Validate ISBN-10 and ISBN-13 book identifiers with check digit verification and format conversion. Perfect
Analyze character distribution in text with visual frequency charts. Perfect for cryptanalysis, language an
Write and preview Markdown in real-time. Support for headers, lists, code blocks, tables, and more. 100% fr
Convert text to Morse code and decode Morse code back to text. Features customizable separators, real-time
Convert your PDF files to editable Word documents (DOCX). 100% free, fast, and secure. All conv
Calculate percentages, percentage increases, decreases, and more. 100% free and private - all calculations
Boost your productivity with the Pomodoro Technique. 25-minute focused work sessions followed by
Calculate text readability with 6 different metrics including Flesch Reading Ease, Gunning Fog
Create professional resumes with multiple templates. Add your experience, education, and skills, then downl
Convert between decimal numbers (1-3999) and Roman numerals instantly. Free online converter with detailed
Encode and decode text using ROT13, ROT5, ROT18, ROT47, Caesar cipher, or Atbash cipher. Free o
Advanced scientific calculator with trigonometric functions, logarithms, powers, and more. 100% free with f
Divide your PDF into separate files. Extract specific pages, split by ranges, or divide into equal parts.
Precision stopwatch with lap timing, millisecond accuracy, and export functionality. Perfect for
Convert between Celsius, Fahrenheit, and Kelvin temperature scales instantly. Real-time conversion as you
Reverse text in multiple ways - characters, words, sentences, lines, flip, and more. 100% free and private
Comprehensive text analysis tool. Calculate word count, character count, readability scores, ke
Calculate tip amounts and split bills between multiple people. Supports preset and custom tip percentages w
Count words, characters, sentences, and paragraphs in real-time. Calculate reading time and analyze text st
Convert your Word documents (DOCX) to PDF format. 100% free, fast, and secure. All conversions