Unit Converter - Convert Units of Measurement
Use our free unit converter to convert between different units of measurement including length, weight, volume, area, and temperature. Our unit converter with all measurements supports metric and imperial units with accurate calculations.
Unit Converter
Conversion Result
Enter values to see conversion result
Frequently Asked Questions About Unit Converter
What is a unit converter and what units can I convert?
A unit converter is a tool that converts measurements from one unit to another within the same category. Our unit converter supports conversions for: length (millimeters, centimeters, meters, kilometers, inches, feet, yards, miles), weight (milligrams, grams, kilograms, ounces, pounds, stone, tons), volume (milliliters, liters, cubic centimeters, cubic meters, fluid ounces, cups, pints, quarts, gallons), area (square millimeters, square centimeters, square meters, square kilometers, square inches, square feet, square yards, acres), and temperature (Celsius, Fahrenheit, Kelvin).
How do I convert between metric and imperial units?
Our unit converter makes it easy to convert between metric units (meters, kilograms, liters) and imperial units (feet, pounds, gallons). Simply select the category (length, weight, volume, etc.), choose your "from" unit (e.g., meters), choose your "to" unit (e.g., feet), enter the value, and click convert. The calculator handles all conversion factors automatically, so you get accurate results instantly.
How accurate are the unit conversions?
Our unit converter uses standard conversion factors recognized internationally. Conversions are highly accurate for most practical purposes. For example, 1 meter = 3.28084 feet, 1 kilogram = 2.20462 pounds, and 1 liter = 0.264172 gallons. The calculator displays results with appropriate precision based on the units being converted. For scientific or engineering applications requiring extreme precision, verify conversion factors for your specific use case.
Can I convert temperature between Celsius, Fahrenheit, and Kelvin?
Yes, our unit converter includes temperature conversion between Celsius (°C), Fahrenheit (°F), and Kelvin (K). Select the temperature category, choose your "from" and "to" units, enter the temperature value, and convert. The calculator uses standard formulas: Fahrenheit = (Celsius × 9/5) + 32, Kelvin = Celsius + 273.15. This is useful for weather, cooking, scientific calculations, and international travel.
What's the difference between US and UK units?
Some units differ between US and UK systems. For example, a US gallon is 3.78541 liters, while a UK gallon is 4.54609 liters. A US ton is 2,000 pounds, while a UK ton (long ton) is 2,240 pounds. Our calculator uses standard international definitions, typically US measurements for gallons and tons. Always verify which system you need for your specific application, especially for recipes, shipping, or international trade.
Is this unit converter free to use?
Yes, our unit converter is completely free to use with no registration required, no hidden fees, and no limitations. You can convert between any units as often as you need for personal, educational, or business purposes. The converter works on all devices (mobile, tablet, desktop) and is available 24/7. Perfect for cooking, DIY projects, travel, education, and professional use.
How the Unit Converter calculator works
This free unit converter calculator runs entirely in your browser using standard mathematical formulas. Enter your figures, tap Calculate, and results update instantly — no signup required.
Figures are estimates for general information. Always verify important decisions with a qualified professional where relevant.
- Input your values using the fields above (numeric keypad on mobile).
- Results use precise floating-point arithmetic rounded for display.
- Refresh or change inputs and recalculate anytime.
Worked example
- Choose typical values for a common unit converter scenario.
- Enter those values in the calculator fields above.
- Tap Calculate and compare the on-screen result with the expected formula outcome.
- Adjust one input at a time to see how the result changes.