Online Unit Converters
Tooleazy offers 15 free online converters covering daily life, science and engineering, and digital units — no registration or install needed.
Units
15 tools
1. Everyday Conversions
The most common daily converters. Length Converter converts between meters, centimeters, feet and inches; Weight Converter covers kilograms, jin, pounds and ounces; Area Converter handles square meters, mu and hectares; Volume Converter supports liters, milliliters and gallons; Temperature Converter switches between Celsius, Fahrenheit and Kelvin.
2. Science & Engineering Conversions
For engineering and scientific calculations. Speed Converter converts between m/s and km/h; Pressure Converter handles Pa, bar, psi and mmHg; Power Converter covers watts, kilowatts, horsepower and refrigeration tons; Density Converter converts between kg/m³ and g/cm³; Energy Converter switches between joules, kilocalories, kilowatt-hours and BTU.
3. Digital & Specialized Conversions
Digital calculations and special-case conversions. Byte Converter supports B, KB, MB and GB storage units; Time Unit Converter spans the full range from milliseconds to years; English Count Converter converts between million/billion and Chinese wan/yi units; Coordinate Converter handles latitude/longitude degree-minute-second formats; Cuboid Calculator works out volume, surface area and space diagonal at once.
Unit Conversion FAQ
What is a unit converter and which units are common?
A unit converter changes a value of the same physical quantity between units using built-in ratios or conversion formulas. Common units include length (meter, centimeter, inch, foot), weight (kilogram, jin, pound, ounce), area (square meter, mu, hectare), volume (liter, milliliter, gallon), temperature (Celsius, Fahrenheit, Kelvin), plus speed, pressure, power, density, energy and heat, byte storage and English counting. Tooleazy offers 15 free online converters across daily life, science and engineering, and digital use.
How is an online converter different from a phone calculator?
A phone calculator only does the four basic arithmetic operations, and entering conversion factors by hand is error-prone. Online converters include precise factors for every unit, for example temperature is not a simple ratio (0°C = 32°F) and the tool automatically applies the formula C x 9/5 + 32 = F. One input also shows results for all units at once, so there is no manual checking. Tooleazy converters run fully in your browser and need no install.
How do Chinese market units convert to metric units?
Common conversions: 1 jin = 500 g = 0.5 kg, 1 liang = 50 g, 1 dan = 50 kg; 1 mu is about 666.67 square meters, 1 hectare = 15 mu; 1 li = 500 m = 0.5 km. The length, weight and area converters all support two-way conversion between Chinese market units and metric units, so one input gives the metric result instantly.
How do imperial and metric units convert?
Common imperial conversions: 1 inch = 2.54 cm, 1 foot = 30.48 cm = 0.3048 m, 1 yard = 0.9144 m, 1 mile is about 1.609 km; 1 pound is about 0.4536 kg, 1 ounce is about 28.35 g; 1 US gallon is about 3.785 L, 1 UK gallon is about 4.546 L; 1 square foot is about 0.0929 square meters. The length, weight, area and volume converters all cover common imperial units.