Unit Converter
Convert between different units of measurement.
How to Convert
- Select a measurement category above
- Enter the value you want to convert
- Choose your source unit (what you're converting from)
- Choose your target unit (what you're converting to)
- See your result instantly!
Step 1: Enter Value
Step 2: Select Source Unit
Step 3: Select Target Unit
Conversion Formula
Foot = Meter × 3.28084Example:
1 m = 3.28084 ft
| Conversion | Multiply By |
|---|---|
| Inches to Centimeters | 2.54 |
| Feet to Meters | 0.3048 |
| Miles to Kilometers | 1.60934 |
| Pounds to Kilograms | 0.453592 |
| Gallons (US) to Liters | 3.78541 |
| Square Feet to Square Meters | 0.092903 |
- Celsius to Fahrenheit: °F = °C × 9/5 + 32
- Fahrenheit to Celsius: °C = (°F - 32) × 5/9
- Celsius to Kelvin: K = °C + 273.15
- Kelvin to Celsius: °C = K - 273.15
- Fahrenheit to Kelvin: K = (°F - 32) × 5/9 + 273.15
- Kelvin to Fahrenheit: °F = (K - 273.15) × 9/5 + 32
There are two systems for digital storage units:
- Decimal (SI): Based on powers of 10
- 1 Kilobyte (KB) = 1,000 bytes
- 1 Megabyte (MB) = 1,000,000 bytes
- 1 Gigabyte (GB) = 1,000,000,000 bytes
- Binary (IEC): Based on powers of 2
- 1 Kibibyte (KiB) = 1,024 bytes
- 1 Mebibyte (MiB) = 1,048,576 bytes
- 1 Gibibyte (GiB) = 1,073,741,824 bytes
How to Use This Unit Converter
Our unit converter helps you convert between different units of measurement across various categories. Here's how to use it:
- Select a category (length, area, volume, etc.) using the category buttons.
- Enter the value you want to convert.
- Choose the source unit from the "From" dropdown menu.
- Choose the target unit from the "To" dropdown menu.
- View the converted result and the conversion formula.
- Optionally, save the conversion to your recent list for future reference.
You can also swap the source and target units by clicking the swap button between the dropdowns.
Measurement Systems
The world primarily uses two measurement systems:
Metric System (SI)
The International System of Units (SI) is used by most countries worldwide. It's based on powers of 10, making conversions simple.
- Length: meter (m)
- Mass: kilogram (kg)
- Volume: liter (L) or cubic meter (m³)
- Temperature: Celsius (°C)
Common prefixes include:
- kilo- (k): 1,000 (10³)
- centi- (c): 0.01 (10⁻²)
- milli- (m): 0.001 (10⁻³)
- micro- (μ): 0.000001 (10⁻⁶)
Imperial/US Customary System
Used primarily in the United States and, to some extent, in the United Kingdom. It has historical origins and less consistent conversion factors.
- Length: inch (in), foot (ft), yard (yd), mile (mi)
- Weight: ounce (oz), pound (lb), stone (st)
- Volume: fluid ounce (fl oz), cup, pint (pt), quart (qt), gallon (gal)
- Temperature: Fahrenheit (°F)
Conversions often involve fractions or irregular numbers (e.g., 12 inches = 1 foot, 3 feet = 1 yard).
Common Conversion Factors
| Category | From | To | Multiply By |
|---|---|---|---|
| Length | Inches | Centimeters | 2.54 |
| Feet | Meters | 0.3048 | |
| Miles | Kilometers | 1.60934 | |
| Area | Square Feet | Square Meters | 0.092903 |
| Acres | Hectares | 0.404686 | |
| Volume | Gallons (US) | Liters | 3.78541 |
| Cubic Feet | Cubic Meters | 0.0283168 | |
| Weight | Pounds | Kilograms | 0.453592 |
| Ounces | Grams | 28.3495 | |
| Speed | Miles per Hour | Kilometers per Hour | 1.60934 |
| Knots | Miles per Hour | 1.15078 |
Temperature Conversion
Temperature conversions use formulas rather than simple multiplication factors:
Celsius to Fahrenheit
°F = (°C × 9/5) + 32Example: 20°C to °F
(20 × 9/5) + 32 = 68°F
Fahrenheit to Celsius
°C = (°F - 32) × 5/9Example: 68°F to °C
(68 - 32) × 5/9 = 20°C
Celsius to Kelvin
K = °C + 273.15Example: 20°C to K
20 + 273.15 = 293.15K
Key Temperature Points
| Point | Celsius (°C) | Fahrenheit (°F) | Kelvin (K) |
|---|---|---|---|
| Absolute Zero | -273.15 | -459.67 | 0 |
| Freezing Point of Water | 0 | 32 | 273.15 |
| Body Temperature | 37 | 98.6 | 310.15 |
| Boiling Point of Water | 100 | 212 | 373.15 |