Acre Size Calculator
Enter the length and width of the land in feet or metres. The calculator gives the area in acres, hectares, square feet and square metres, and the side of a square of the same size.
- Acres
- Hectares
- Square feet
For odd shapes, split the land into rectangles and add the acres.
An acre is 43,560 square feet, or about 4,047 m². A plot 330 ft long and 132 ft wide is exactly one acre. A square acre is about 208.7 ft (63.6 m) on each side. A hectare is about 2.47 acres.
Acre size chart
Square plots. Search for an area.
| Acres | Square feet | Side (ft) | Side (m) |
|---|---|---|---|
| 0.25 | 10890 | 104.4 | 31.8 |
| 0.5 | 21780 | 147.6 | 45 |
| 1 | 43560 | 208.7 | 63.6 |
| 2 | 87120 | 295.2 | 90 |
| 5 | 217800 | 466.7 | 142.2 |
| 10 | 435600 | 660 | 201.2 |
| 20 | 871200 | 933.4 | 284.5 |
| 40 | 1742400 | 1320 | 402.3 |
| 100 | 4356000 | 2087.1 | 636.1 |
Side of an equal square.
Square side and acres
Square plot. Slide the side length.
The plot is drawn with a one acre square marked.
How to work out acres
Sides to acres. Step through it.
Measure
Length and width.
Use the true horizontal distance. Sloping ground measured along the slope gives too much.
Acres, hectares or square metres
Land units. Compare them.
Imperial.
Metric.
Small plots.
Most of the world uses hectares. The US and UK often still use acres.
Before you rely on it
Land checks. Tick each item.
Tick each item as you go.
For a sale or boundary, use a surveyor's figures.
What you get
Acre conversion. Each tile explains one result.
Area.
Metric.
Imperial.
Side.
Quarter acres.
An American football field with end zones is about 1.32 acres.
Frequently Asked Questions
No question matches that search.
How do I calculate acres?
Multiply length by width in feet and divide by forty-three thousand five hundred and sixty.
How many square feet are in an acre?
Forty-three thousand five hundred and sixty.
How big is an acre in metres?
About four thousand and forty-seven square metres.
How many acres in a hectare?
About two point four seven.
What are the sides of a square acre?
About two hundred and nine feet each.
How big is a quarter acre?
Ten thousand eight hundred and ninety square feet.
How do I measure an irregular plot?
Split it into rectangles and triangles and add their areas.
Know your land
Turn measurements into acres and hectares in a moment, and every plan for the land starts from the right number.
More size calculators
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