Area Converter
Enter one area measurement and instantly see useful equivalents in metric, US customary, and land units.
Browse conversion tools
This page uses HandyCalcHub's shared conversion engine. Visit the Converters hub to see current and future converter categories.
What this converter does
The Area Converter changes one entered area into several common units at the same time. It supports square millimeters, square centimeters, square meters, hectares, square kilometers, square inches, square feet, square yards, and acres.
How area conversion works
Each unit is converted through a shared base unit: square meters. For example, acres convert to square meters using the exact relationship 1 acre = 4,046.8564224 square meters. The result is then converted from square meters into each target unit.
Area units are squared units, not linear units. Since 1 foot = 12 inches, one square foot is a 12 inch by 12 inch square. That gives 1 ft² = 144 in², not 12 in².
Worked example
If you enter 1 acre, the converter shows 43,560 square feet, 4,840 square yards, 4,046.8564224 square meters, 0.40468564224 hectares, and about 0.0040468564224 square kilometers.
Useful conversion relationships
| Relationship | Value |
|---|---|
| 1 square foot | 144 square inches |
| 1 square yard | 9 square feet |
| 1 acre | 43,560 square feet |
| 1 acre | 4,840 square yards |
| 1 acre | 4,046.8564224 square meters |
| 1 hectare | 10,000 square meters |
| 1 square kilometer | 1,000,000 square meters |
| 1 square meter | 10,000 square centimeters |
When area conversions are useful
Area conversions are useful for room and floor area, land and property comparisons, construction estimates, landscaping plans, agriculture, garden planning, flooring, paint coverage, and translating measurements between metric and US customary systems.
Frequently asked questions
How many square feet are in an acre?
There are exactly 43,560 square feet in one acre.
How many square inches are in a square foot?
There are 144 square inches in one square foot because one foot is 12 inches and area squares the linear relationship.
How many square meters are in a hectare?
One hectare is exactly 10,000 square meters.
Can this converter handle decimal or negative values?
Yes. Decimal and negative values calculate normally, which can be useful for math checks, differences, or offsets.