Unit Converter
Convert length, weight, temperature, area, speed, and volume units between metric and imperial standards with instant equivalence tables.
| Unit | Equivalent Value |
|---|---|
| Meters (m) | 10 |
| Kilometers (km) | 0.01 |
| Centimeters (cm) | 1,000 |
| Millimeters (mm) | 10,000 |
| Inches (in) | 393.7008 |
| Feet (ft) | 32.8084 |
| Yards (yd) | 10.9361 |
| Miles (mi) | 0.0062 |
Understanding Metric vs Imperial Measurement Systems
The International System of Units (SI metric system) is base-10, allowing simple conversions by shifting decimal places (e.g. 1,000 millimeters in a meter). The US Customary and British Imperial systems rely on historical base-12 and base-16 units (e.g. 12 inches per foot, 16 ounces per pound).
Key Conversion Factors
- Length: 1 inch = 2.54 cm | 1 meter = 3.28084 feet | 1 mile = 1.60934 km
- Mass: 1 kilogram = 2.20462 lbs | 1 pound = 16 ounces = 453.592 grams
- Volume: 1 US Gallon = 3.78541 Liters = 4 Quarts = 128 fl oz
- Area: 1 Acre = 43,560 square feet = 4,046.86 square meters
Common Conversion Scenarios
- ✓Cooking & Culinary Recipes
Convert European metric baking recipes (grams, milliliters) into US kitchen volume equivalents (cups, tablespoons, ounces).
- ✓International Engineering & Construction
Translate architectural blueprints between feet/inches and metric millimeters/meters without rounding errors.
- ✓Science, Physics & Lab Calculations
Switch between Celsius, Fahrenheit, and absolute thermodynamic Kelvin temperature scales effortlessly.
- ✓Travel & Road Trip Navigation
Convert vehicle speeds between miles per hour (mph) and kilometers per hour (km/h) across international borders.
Why Use This Unit Converter
6 Major Measurement Categories
Supports Length, Weight/Mass, Temperature, Surface Area, Speed, and Liquid Volume.
Simultaneous Multi-Unit Matrix
Displays the converted value across every other unit in the category at the same time in an easy-to-read table.
One-Click Quick Unit Swap
Instantly invert From and To measurement units with a single tap.
High Precision Math
Maintains up to 6 decimal digits of precision for critical engineering and scientific calculations.
Frequently Asked Questions
How do you convert Celsius to Fahrenheit?
The formula to convert Celsius to Fahrenheit is: °F = (°C * 9/5) + 32 (or °F = °C * 1.8 + 32). To convert Fahrenheit back to Celsius: °C = (°F - 32) * 5/9.
How many feet are in a meter?
There are exactly 3.28084 feet in 1 meter. Conversely, 1 foot equals exactly 0.3048 meters.
How do you convert kilograms to pounds?
To convert kilograms to pounds, multiply by 2.20462: Pounds = Kilograms * 2.20462. To convert pounds to kilograms, divide by 2.20462 (or multiply by 0.453592).
What is the difference between an imperial gallon and a US gallon?
A US liquid gallon is equal to approximately 3.785 liters (128 US fluid ounces). An Imperial gallon (used in the UK and Canada) is significantly larger, equal to 4.546 liters (160 imperial fluid ounces). Our tool converts US standard liquid gallons.
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