Area Converter
Convert area units quickly and accurately — square meters, acres, hectares, square feet, square kilometers, and more. Ideal for real estate, land measurement, and construction.
Understanding Area Measurements
Area measures the size of a two-dimensional surface. You use area calculations when buying property, installing flooring, painting walls, or planning gardens. Area units express how much space a surface covers.
The SI unit for area is the square meter (m²). One square meter represents a square with sides of one meter each. Larger areas use hectares or square kilometers, while smaller areas use square centimeters or square inches.
Area Calculation Formulas
| Shape | Formula | Example |
|---|---|---|
| Rectangle | Area = length × width | 5m × 3m = 15 m² |
| Square | Area = side² | 4m × 4m = 16 m² |
| Triangle | Area = (base × height) ÷ 2 | (6m × 4m) ÷ 2 = 12 m² |
| Circle | Area = π × radius² | π × 3² = 28.27 m² |
| Trapezoid | Area = ((a + b) × h) ÷ 2 | ((5m + 3m) × 4m) ÷ 2 = 16 m² |
Area Conversion Formulas
Square Meters to Square Feet
ft² = m² × 10.7639
Example: 50 m² × 10.7639 = 538.2 ft²
Square Feet to Square Meters
m² = ft² × 0.0929
Example: 1,000 ft² × 0.0929 = 92.9 m²
Hectares to Acres
acres = hectares × 2.47105
Example: 5 ha × 2.47105 = 12.355 ac
Acres to Hectares
hectares = acres × 0.404686
Example: 10 ac × 0.404686 = 4.047 ha
Common Area Conversions
| Metric | Imperial Equivalent |
|---|---|
| 1 square centimeter | 0.155 square inches |
| 1 square meter | 10.764 square feet |
| 1 hectare | 2.471 acres |
| 1 square kilometer | 0.386 square miles |
| 100 square meters | 1,076.39 square feet |
| 1,000 square meters | 0.247 acres |
Area Unit Reference Table
| Unit | Symbol | Equals 1 Unit In m² | System |
|---|---|---|---|
| Square Millimeter | mm² | 0.000001 m² | Metric |
| Square Centimeter | cm² | 0.0001 m² | Metric |
| Square Meter | m² | 1 m² | Metric (SI) |
| Hectare | ha | 10,000 m² | Metric |
| Square Kilometer | km² | 1,000,000 m² | Metric |
| Square Inch | in² | 0.000645 m² | Imperial |
| Square Foot | ft² | 0.0929 m² | Imperial |
| Square Yard | yd² | 0.8361 m² | Imperial |
| Acre | ac | 4,046.86 m² | Imperial |
| Square Mile | mi² | 2,589,988 m² | Imperial |
Real-World Area Examples
| Object/Surface | Area |
|---|---|
| Standard parking space | 12.5 m² (134.5 ft²) |
| Tennis court (singles) | 195.08 m² (2,100 ft²) |
| Basketball court (NBA) | 420 m² (4,520 ft²) |
| Football field (NFL) | 5,351 m² (1.32 acres) |
| Average house (US) | 232 m² (2,500 ft²) |
| One acre | 4,047 m² (43,560 ft²) |
When to Use Each Area Unit
Square Centimeters (cm²)
Small surfaces, paper sizes, electronic components, tiles
Square Meters (m²)
Room sizes, house areas, flooring, real estate listings
Hectares (ha)
Farmland, large properties, parks, agricultural planning
Square Kilometers (km²)
Cities, regions, countries, geographical areas
Square Inches (in²)
Small components, screen areas, material samples
Square Feet (ft²)
Room sizes, house areas (US/UK), flooring, real estate
Acres (ac)
Land plots, farms, large yards, property listings (US/UK)
Square Miles (mi²)
Cities, counties, geographical regions (US/UK)
Practical Area Calculation Tips
Measuring Irregular Rooms
Divide irregular spaces into rectangles. Calculate each rectangle's area separately, then add them together. This approach works for L-shaped rooms, spaces with alcoves, or any complex floor plan.
Accounting for Waste
Add 10-15% extra material when buying flooring, tiles, or carpet. Cutting and fitting creates waste. For complex patterns or diagonal installations, add 20% to your calculated area.
Paint Coverage
One gallon of paint covers approximately 350-400 square feet (32-37 m²). Calculate wall area by multiplying perimeter by height, then subtract door and window areas.
Frequently Asked Questions
How many square feet are in an acre?
One acre equals exactly 43,560 square feet. This measurement dates back to medieval England, representing the area a yoke of oxen could plow in one day.
What is the difference between a hectare and an acre?
A hectare equals 10,000 square meters (2.471 acres), while an acre equals 4,047 square meters (0.405 hectares). Hectares are used globally for land measurement, acres primarily in the US and UK.
How do I calculate square footage of a room?
Measure the length and width in feet, then multiply them. For a 12-foot by 15-foot room: 12 × 15 = 180 square feet. For irregular rooms, divide into rectangles and add individual areas.
Why is area measured in square units?
Area represents two-dimensional space. Multiplying length by width creates square units because you count how many unit squares fit inside the boundary. A 3m × 4m rectangle holds twelve 1m × 1m squares.
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