How Big Is Half an Acre?
Half an Acre is 21,780 square feet — a square about 147.6 feet per side, or roughly 0.4 football fields. Walking its perimeter takes about 2 minutes at 3 mph.
Search your own address below and the map drops a half an acre square on the satellite imagery — drag it anywhere to see exactly how much land it covers next to landmarks you know.
Half an Acre in every unit
| Unit | Half an Acre equals |
|---|---|
| Acres | 0.5 |
| Square feet | 21,780 |
| Square meters | 2,023 |
| Hectares | 0.20 |
| Square miles | 0.0008 |
| Football fields (incl. end zones) | 0.4 |
Typical dimensions of half an acre
Acreage measures area, not shape. Every rectangle below encloses exactly half an acre:
| Width (ft) | Length (ft) | Shape |
|---|---|---|
| 147.6 | 147.6 | A perfect square |
| 100 | 217.8 | A realistic rectangular parcel |
| 66 | 330 | A realistic rectangular parcel |
Real parcels are rarely perfect rectangles. To measure an actual property, trace its boundary corner by corner with the acreage calculator.
What can you do with half an acre?
Half an acre is a generous suburban lot: a typical single-family home, a two-car garage, a large lawn, a vegetable garden and a patio all fit with room left over. It is the size many buyers picture when they say they want “a real yard.”
For scale, most new U.S. subdivision lots are well under a quarter acre, so a half-acre lot feels noticeably open — neighbors are farther away and there is room for a pool, a shop or a small orchard of 10–15 fruit trees.
Other fractions of an acre
| Fraction | Square feet | Square (ft per side) |
|---|---|---|
| 1/3 acre | 14,520 | ~120.5 × 120.5 |
| 1/2 acre | 21,780 | ~147.6 × 147.6 |
| 3/4 acre | 32,670 | ~180.7 × 180.7 |
A third of an acre is a comfortable modern subdivision lot; three-quarters of an acre starts to feel semi-rural, with real distance between houses.
Compare other sizes
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Frequently asked questions
- How many square feet is half an acre?
- Half an Acre is 21,780 square feet (0.5 × 43,560 sq ft per acre). In metric units that is 2,023 square meters, or 0.20 hectares. The conversion table on this page lists every common unit.
- How many football fields is half an acre?
- Half an Acre is about 0.4 American football fields, counting the end zones — each full field covers 57,600 square feet, or 1.32 acres. Football fields are one of the most reliable mental yardsticks because almost everyone has stood on one.
- What are the dimensions of half an acre?
- Half an Acre has no fixed shape — any boundary enclosing 21,780 square feet qualifies. A perfect square would measure about 147.6 × 147.6 feet. Real parcels are usually rectangles or irregular shapes, so the dimensions table on this page shows several realistic layouts with the same area.
- How long does it take to walk half an acre?
- Walking the perimeter of a square half an acre — about 0.11 miles — takes roughly 2 minutes at a normal 3 mph pace (20 minutes per mile). Irregular or brushy parcels take longer, which is worth knowing before you walk a property line with an agent.