Length Converter
Convert between meters, feet, inches, kilometers, miles, and more.
Length Converter
Result
Quick Conversion Reference
📏 Length
- 1 inch = 2.54 cm
- 1 foot = 30.48 cm
- 1 mile = 1.609 km
- 1 meter = 3.281 feet
⚖️ Weight
- 1 pound = 453.6 g
- 1 ounce = 28.35 g
- 1 kg = 2.205 pounds
- 1 stone = 14 pounds
🌡️ Temperature
- 0°C = 32°F = 273.15K
- 100°C = 212°F = 373.15K
- °F = °C × 9/5 + 32
- °C = (°F - 32) × 5/9
📐 Area
- 1 acre = 4,047 m²
- 1 hectare = 10,000 m²
- 1 sq mile = 640 acres
- 1 sq foot = 0.093 m²
🏃 Speed
- 1 mph = 1.609 km/h
- 1 knot = 1.852 km/h
- Mach 1 = 1,235 km/h
- 1 m/s = 3.6 km/h
About Unit Conversion
Our free online unit converter helps you quickly and accurately convert between different measurement systems. Whether you need to convert metric to imperial units, calculate temperature differences, or determine area and speed conversions, our tool provides instant results with high precision.
The converter supports both metric units (meters, kilograms, Celsius) used internationally, and imperial units (feet, pounds, Fahrenheit) commonly used in the United States. All calculations happen instantly in your browser with no server requests, ensuring privacy and speed.
Frequently Asked Questions
How do I convert meters to feet?
To convert meters to feet, multiply the number of meters by 3.28084. For example, 5 meters = 5 × 3.28084 = 16.404 feet. Our converter does this instantly - enter the value, select meters and feet, and get the result.
What is the formula to convert Celsius to Fahrenheit?
To convert Celsius to Fahrenheit, multiply by 9/5 and add 32. The formula is: °F = (°C × 9/5) + 32. For example, 25°C = (25 × 9/5) + 32 = 77°F. To convert back: °C = (°F - 32) × 5/9.
How many pounds are in a kilogram?
One kilogram equals approximately 2.205 pounds (lbs). To convert kg to lbs, multiply the weight in kilograms by 2.205. Conversely, to convert pounds to kg, divide by 2.205 or multiply by 0.4536.
What is the difference between metric and imperial units?
Metric system (SI) uses base-10 units like meters, grams, and liters, used worldwide. Imperial system uses feet, pounds, and gallons, primarily in the US. Metric is easier for calculations due to decimal-based conversions.
How do I convert miles per hour to kilometers per hour?
To convert mph to km/h, multiply by 1.60934. For example, 60 mph = 60 × 1.60934 = 96.56 km/h. To convert km/h to mph, divide by 1.60934 or multiply by 0.621371.
How many square feet are in an acre?
One acre equals exactly 43,560 square feet. An acre is also equal to 4,047 square meters or 0.4047 hectares. One square mile contains 640 acres.
What is absolute zero in Celsius and Fahrenheit?
Absolute zero, the coldest possible temperature, is -273.15°C or -459.67°F (0 Kelvin). At this temperature, all molecular motion stops. Water freezes at 0°C (32°F) and boils at 100°C (212°F) at standard pressure.
How do I convert inches to centimeters?
To convert inches to centimeters, multiply by 2.54. For example, 10 inches = 10 × 2.54 = 25.4 cm. This is an exact conversion factor. To convert cm to inches, divide by 2.54.