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🔧 Utilities

General utility tools and converters

Our Utilities category includes a diverse collection of general-purpose tools and converters. From unit converters and percentage calculators to encoders, formatters, and health calculators, these utilities help with everyday tasks and conversions across various domains.

📏 Unit Converter

Convert between different units of length, weight, temperature, and more.

🪙 Coin Flip

Flip a virtual coin or roll dice for quick decision-making.

% Percentage Calculator

Calculate percentages, increases, decreases, and more.

⚖️ BMI Calculator

Calculate your Body Mass Index to assess your weight category.

💧 Water Intake Calculator

Calculate daily water intake based on weight, activity level, and gender.

🔧 Base64 Encoder

Encode and decode text to/from Base64 format.

📋 JSON Formatter

Format, validate, and beautify JSON data.

🔗 URL Encoder

Encode and decode URLs and URL components.

Which Utility Do You Need?

  • Unit Converter: Length, weight, temperature, and volume conversions in both directions: recipe measurements, luggage weights, weather in another country, DIY project dimensions.
  • Percentage Calculator: Handles the three percentage questions people actually ask: what is X% of Y, what percent is X of Y, and what is the percentage change between two numbers. Discounts, raises, statistics, tax.
  • BMI Calculator: Body Mass Index from height and weight, with the standard category ranges. A quick screening number, not a medical diagnosis.
  • Water Intake Calculator: A daily hydration estimate based on your weight and activity level.
  • Base64 Encoder/Decoder: For developers: encode binary or text data for APIs, data URIs, and email attachments, or decode a Base64 string to see what is inside.
  • JSON Formatter: Paste minified or messy JSON and get an indented, readable version, with validation that pinpoints syntax errors.
  • URL Encoder/Decoder: Convert special characters for safe use in URLs, or make an encoded query string readable again.
  • Coin Flip & Dice Roller: Instant fair decisions and tabletop rolls when there is no coin or dice within reach.

One Page, No App Install

Each of these utilities replaces either a phone app, a spreadsheet formula, or a sketchy ad-covered site. They load in under a second, work on mobile and desktop, and process everything locally in your browser: the numbers, text, and data you enter are never transmitted or stored. Bookmark the ones you use often; each tool has a stable, direct URL.