Area Converter
Convert between metric and imperial area units — square feet, square meters, acres, hectares, square miles, and more
Unit Converter
Support fast conversion of various units including length, area, volume, weight, temperature, etc.
Common Units
Common Unit Conversions
Quick reference for frequently used unit conversions
Length
| From | To | Formula | Example |
|---|---|---|---|
| Inches (in) | Centimeters (cm) | in × 2.54 | 1 in = 2.54 cm |
| Feet (ft) | Meters (m) | ft × 0.3048 | 1 ft = 0.3048 m |
| Miles (mi) | Kilometers (km) | mi × 1.609 | 1 mi = 1.609 km |
| Meters (m) | Feet (ft) | m × 3.281 | 1 m = 3.281 ft |
| Kilometers (km) | Miles (mi) | km × 0.621 | 1 km = 0.621 mi |
Weight / Mass
| From | To | Formula | Example |
|---|---|---|---|
| Ounces (oz) | Grams (g) | oz × 28.35 | 1 oz = 28.35 g |
| Pounds (lb) | Kilograms (kg) | lb × 0.454 | 1 lb = 0.454 kg |
| Kilograms (kg) | Pounds (lb) | kg × 2.205 | 1 kg = 2.205 lb |
| Tons (t) | Tonnes (t) | t × 0.907 | 1 t = 0.907 tonnes |
Volume
| From | To | Formula | Example |
|---|---|---|---|
| Fl oz (US) | Milliliters (ml) | fl oz × 29.574 | 1 fl oz = 29.574 ml |
| Cups (US) | Milliliters (ml) | cup × 236.588 | 1 cup = 236.588 ml |
| Pints (US) | Liters (L) | pt × 0.473 | 1 pt = 0.473 L |
| Gallons (US) | Liters (L) | gal × 3.785 | 1 gal = 3.785 L |
| Liters (L) | Gallons (US) | L × 0.264 | 1 L = 0.264 gal |
Temperature
| From | To | Formula | Example |
|---|---|---|---|
| Celsius (°C) | Fahrenheit (°F) | (°C × 9/5) + 32 | 0°C = 32°F |
| Fahrenheit (°F) | Celsius (°C) | (°F - 32) × 5/9 | 32°F = 0°C |
| Celsius (°C) | Kelvin (K) | °C + 273.15 | 0°C = 273.15 K |
| Kelvin (K) | Celsius (°C) | K - 273.15 | 273.15 K = 0°C |
Area
| From | To | Formula | Example |
|---|---|---|---|
| Sq feet (ft²) | Sq meters (m²) | ft² × 0.0929 | 1 ft² = 0.0929 m² |
| Sq meters (m²) | Sq feet (ft²) | m² × 10.764 | 1 m² = 10.764 ft² |
| Acres | Hectares (ha) | acre × 0.405 | 1 acre = 0.405 ha |
| Hectares (ha) | Acres | ha × 2.471 | 1 ha = 2.471 acres |
Speed
| From | To | Formula | Example |
|---|---|---|---|
| MPH | KM/H | mph × 1.609 | 1 mph = 1.609 km/h |
| KM/H | MPH | km/h × 0.621 | 1 km/h = 0.621 mph |
| Knots | MPH | knots × 1.151 | 1 knot = 1.151 mph |
| M/S | KM/H | m/s × 3.6 | 1 m/s = 3.6 km/h |
Note: These are commonly used conversions with approximate values rounded for practical use. For precise conversions, use the calculator tool above.
Unit Conversion Reference Table
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What is Area Conversion?
Area conversion translates a surface measurement from one unit to another — square feet to square meters, acres to hectares, and so on. It is used in real estate, agriculture, construction, and land management.
The key thing to understand about area units is that they are squared versions of length units. One square meter is not the same as one meter × one linear conversion — it is (1 m)². This means area conversion factors are the square of the corresponding length factors: 1 foot = 0.3048 m, so 1 sq ft = 0.3048² = 0.0929 m².
The metric system (m², hectares, km²) is used globally for land. The imperial system (sq ft, acres, sq mi) is common in the US and UK. Some regions also use traditional units like the Chinese mu (666.7 m²) or the Korean pyeong (3.306 m²).
How to Convert Area Units
Area units have conversion rates relative to a base unit (the square meter):
result = value × (fromUnit rate) ÷ (toUnit rate)
Example — convert 2 acres to square meters:
2 acre = 2 × 4046.856 ÷ 1 = 8093.7 m²
Key tip: Never use a linear conversion factor (like 3.281 for meters-to-feet) for area — always use the squared factor (10.764 for m²-to-sq ft). Mixing these up is the most common area conversion error.
Common Area Conversions
| From | To | Multiply by |
|---|---|---|
| Square foot | Square meter | 0.0929 |
| Square meter | Square foot | 10.764 |
| Acre | Square meter | 4046.9 |
| Hectare | Acre | 2.471 |
| Square mile | Square kilometer | 2.59 |
Frequently Asked Questions
How many square feet are in an acre?
One acre equals 43,560 square feet. An acre is also 4,047 square meters or 0.4047 hectares. To convert acres to square feet, multiply by 43,560. The acre originated as the area a yoke of oxen could plow in one day.
How do I convert square meters to square feet?
Multiply square meters by 10.764 to get square feet. For example, a 50 m² apartment is 50 × 10.764 = 538.2 sq ft. To go the other way, multiply square feet by 0.0929. A quick estimate: 1 m² is roughly 10.8 sq ft.
What is the difference between a hectare and an acre?
A hectare is a metric unit equal to 10,000 square meters (2.471 acres). An acre is an imperial unit equal to 4,047 square meters. Hectares are used in most of the world for land measurement; acres are used in the US, UK, and a few other countries. One hectare is about 2.5 acres.
How many square meters are in a square kilometer?
One square kilometer equals 1,000,000 square meters (one million). Because area is two-dimensional, the conversion is the square of the linear conversion: 1 km = 1000 m, so 1 km² = 1000 × 1000 = 1,000,000 m². This is why area conversions use squared factors.
How do I convert square miles to square kilometers?
One square mile equals 2.59 square kilometers. To convert, multiply square miles by 2.59. Note that this is not the same as the linear conversion (1 mile = 1.609 km) — because area squares the ratio: 1.609² ≈ 2.59. Always use the squared factor for area conversions, not the linear one.