Simple online tools: calculators, converters and developer utilities

Available Tools

• Percentage Calculator

  Calculate percentages, percentage increases, and percentage decreases quickly and accurately.

• Rule of Three Calculator

  Calculate unknown values in proportions using the rule of three (cross multiplication).

• Average Calculator

  Calculate the average (arithmetic mean) of any set of numbers instantly. Perfect for grades, scores, measurements, and more.

• Fraction to Decimal Converter

  Convert any fraction to its decimal equivalent quickly and accurately. Perfect for math homework, engineering calculations, and everyday conversions.

• Percentage Change Calculator

  Calculate the percentage change between two values to see how much something has increased or decreased.

• Temperature Converter

  Convert temperatures between Celsius and Fahrenheit quickly and accurately. Perfect for cooking, weather, and scientific calculations.

• Distance Converter

  Convert distances between kilometers (km) and miles (mi) quickly and accurately. Perfect for travel planning and navigation.

• Weight Converter

  Convert weights between kilograms (kg) and pounds (lb) quickly and accurately. Perfect for cooking, fitness, and shipping calculations.

• Bytes Converter

  Convert digital storage units between bytes, KB, MB, and GB quickly and accurately. Perfect for file sizes, storage capacity, and data transfer calculations.

• Time Unit Converter

  Convert time units between seconds, minutes, and hours quickly and accurately. Perfect for time calculations, duration measurements, and scheduling.

• JSON Formatter & Minifier

  Format JSON with proper indentation for readability or minify it to reduce file size. All processing runs locally in your browser for privacy and security.

• URL Encode & Decode

  Encode special characters in URLs for safe transmission or decode encoded URLs to read the original text. All encoding and decoding runs locally in your browser.

• Base64 Encode & Decode

  Encode text or binary data to Base64 format or decode Base64 strings back to original text. Full UTF-8 Unicode support ensures proper handling of international characters. All processing runs locally in your browser.

• UUID v4 Generator

  Generate cryptographically secure UUID v4 identifiers for use in databases, APIs, and applications. Generate single UUIDs or multiple UUIDs at once. All generation happens locally in your browser.

• Unix Timestamp Converter

  Convert Unix timestamps (seconds or milliseconds since January 1, 1970) to readable dates and times, or convert dates to Unix timestamps. All conversions show both UTC and local time. Processing runs locally in your browser.

• Text Counter

  Get accurate word count, character count, and other text statistics for your content.