📐 Unit Converter
Fast & Accurate
Unit Converter
Instantly convert between length, weight, temperature, and area units. Perfect for school, work, travel, and everyday tasks.
Converter
Select a Category
Length Converter
Convert between inches, centimeters, feet, meters, miles, and kilometers.
Result
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Reference
Common Conversions
📏 Length
1 inch= 2.54 cm
1 foot= 30.48 cm
1 mile= 1.60934 km
1 meter= 3.28084 ft
1 yard= 0.9144 m
⚖️ Weight
1 kg= 2.20462 lbs
1 pound= 0.453592 kg
1 ounce= 28.3495 g
1 stone= 6.35029 kg
1 ton= 1000 kg
🌡️ Temperature
0°C= 32°F
100°C= 212°F
37°C (body)= 98.6°F
0 K= -273.15°C
Formula°F = °C×9/5+32
🚀 Speed
1 mph= 1.60934 km/h
1 km/h= 0.62137 mph
1 knot= 1.852 km/h
1 m/s= 3.6 km/h
Speed of light= 299,792 km/s
📐 About This Calculator
Our free Unit Converter instantly converts between hundreds of units across length, weight, temperature, volume, area, speed, time, and more. Whether you're converting miles to kilometers for travel, Fahrenheit to Celsius for cooking, pounds to kilograms for fitness, or any other unit conversion — all results update in real time as you type.
Designed for students, travelers, engineers, and everyday users across the USA, UK, Canada, and beyond — no ads, no signup, and no waiting.
📋 How to Use the Unit Converter
1
Select the conversion category — Choose from Length, Weight, Temperature, Volume, Area, Speed, Time, or other available categories.
2
Choose your input unit — Select the unit you are converting from (example: miles, Fahrenheit, pounds).
3
Choose your output unit — Select the unit you want to convert to (example: kilometers, Celsius, kilograms).
4
Enter the value — Type the number you want to convert. Results update instantly as you type — no need to click Calculate.
5
Copy or use the result — The converted value appears instantly. Use the swap button to quickly reverse the conversion direction.
❓ Frequently Asked Questions
Multiply miles by 1.60934 to get kilometers. Example: 10 miles = 10 x 1.60934 = 16.09 kilometers. In reverse, divide kilometers by 1.60934 (or multiply by 0.62137) to get miles. Our unit converter handles this and hundreds of other length conversions instantly.
Formula: Celsius = (Fahrenheit - 32) x 5/9. Example: 98.6°F = (98.6 - 32) x 5/9 = 37°C (normal body temperature). In reverse: Fahrenheit = (Celsius x 9/5) + 32. Quick reference: 0°C = 32°F (freezing), 100°C = 212°F (boiling).
1 kilogram equals 2.20462 pounds. To convert kg to lbs, multiply by 2.20462. To convert lbs to kg, divide by 2.20462 (or multiply by 0.453592). Example: 70 kg = 70 x 2.20462 = 154.32 lbs. Our weight converter handles grams, ounces, stone, and all other common weight units.
Multiply square feet by 0.092903 to get square meters. Example: 1,000 sq ft = 1,000 x 0.092903 = 92.9 square meters. In reverse, multiply square meters by 10.7639 to get square feet. This conversion is commonly needed for real estate listings between US and international markets.
One US gallon = 3.78541 liters. One UK (Imperial) gallon = 4.54609 liters. Note that US and UK gallons are different — always specify which you mean. To convert liters to US gallons, divide by 3.78541. Our volume converter handles both US and Imperial gallons alongside milliliters, cups, pints, and quarts.