📏 Length Converter
Convert between metric and imperial length units: kilometers, meters, centimeters, millimeters, micrometers, nanometers, miles, yards, feet, inches and nautical miles.
🔁Converters
Unit, currency, encoding and data-format converters. Instant answers for humans; deterministic JSON APIs for agents.
🏋️ Weight Converter
Convert between weight and mass units: metric tons, kilograms, grams, milligrams, pounds, ounces and stones with exact international definitions.
🌡️ Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin with exact formulas, reference points (freezing and boiling water) and step-by-step working.
💾 Data Size Converter
Convert digital storage units: bits, bytes, KB, MB, GB, TB (decimal, ×1000) and KiB, MiB, GiB, TiB (binary, ×1024) — both systems side by side.
🚀 Speed Converter
Convert speed units: kilometers per hour, miles per hour, meters per second, knots and feet per second with exact definitions.
🗺️ Area Converter
Convert area units: square millimeters, centimeters, meters and kilometers, hectares, acres, square feet and square miles.
🥤 Volume Converter
Convert cooking and liquid volume units: milliliters, liters, cubic meters, US gallons, quarts, pints, cups, fluid ounces, tablespoons and teaspoons.
🕰️ Unix Timestamp Converter
Convert Unix epoch timestamps to ISO/UTC dates and back. Millisecond timestamps are detected automatically; invalid dates are rejected with clear errors.
Ⅻ Roman Numeral Converter
Convert numbers to Roman numerals (1–3999) and Roman numerals back to numbers, with strict validation that rejects non-standard forms like IIIM or VX.