Acre to Square meter Converter
Type a value — the answer appears instantly. 1 ac = 4,046.86 m².
Reviewed by the OmniCalc teamMethod verified 2026-07-01
4,046.86 square meters
= 43,560 ft²= 0.404686 ha
equals 4,046.86 square metersFormula: m² = ac × 4046.8564
Acre to Square meter formula
m² = ac × 4046.8564
Convert 5 acres to square meters
- Start with 5 acres.
- Multiply by the conversion factor: 5 × 4,046.86 = 20,234.3.
- So 5 ac = 20,234.3 m².
Acre to Square meter conversion table
| Acres (ac) | Square meters (m²) |
|---|---|
| 0.01 ac | 40.4686 m² |
| 0.1 ac | 404.686 m² |
| 0.25 ac | 1,011.71 m² |
| 0.5 ac | 2,023.43 m² |
| 1 ac | 4,046.86 m² |
| 2 ac | 8,093.71 m² |
| 3 ac | 12,140.6 m² |
| 4 ac | 16,187.4 m² |
| 5 ac | 20,234.3 m² |
| 6 ac | 24,281.1 m² |
| 7 ac | 28,328 m² |
| 8 ac | 32,374.9 m² |
| 9 ac | 36,421.7 m² |
| 10 ac | 40,468.6 m² |
| 15 ac | 60,702.8 m² |
| 20 ac | 80,937.1 m² |
| 25 ac | 101,171 m² |
| 30 ac | 121,406 m² |
| 40 ac | 161,874 m² |
| 50 ac | 202,343 m² |
| 75 ac | 303,514 m² |
| 100 ac | 404,686 m² |
| 250 ac | 1,011,710 m² |
| 500 ac | 2,023,430 m² |
| 1,000 ac | 4,046,860 m² |
| 5,000 ac | 20,234,300 m² |
| 10,000 ac | 40,468,600 m² |
Unit definitions
What is a acre?
The acre is exactly 4840 square yards, about 4046.86 square metres or 0.405 hectares. It is the traditional unit for land area in the United States and United Kingdom. An acre was historically the area a yoke of oxen could plough in a day.
What is a square meter?
The square metre is the SI derived unit of area, the area of a square one metre on each side. It is the global standard for floor space, real estate, and land in metric countries. One square metre is about 10.76 square feet.
Frequently asked questions
How many square meters are in one acre?
One acre equals 4,046.86 square meters (1 ac = 4,046.86 m²).
How do I convert acres to square meters?
Multiply the value in acres by 4,046.86. For example, 10 ac × 4,046.86 = 40,468.6 m².
Which is bigger — a acre or a square meter?
A acre is bigger: one acre contains 4,046.86 square meters.
Is this acre to square meter converter free?
Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.
Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.