Convert area between m², cm², km², ft², yd², acres, hectares, and square miles. All units at once.
Enter an area in any unit and instantly see the equivalent in all metric and imperial area units: square millimetres, square centimetres, square metres, square kilometres, square feet, square yards, square miles, acres, and hectares.
Enter a value in the number box and select the source unit from the dropdown. All other units update instantly in the cards below.
Length conversions are intuitive enough that people often catch mistakes by eye. Area conversions are less forgiving. Once a value is squared, the numbers grow quickly, and a small misunderstanding about the unit can create a large practical error.
That is why an area converter is useful even for people who are otherwise comfortable with measurements. It gives you a clean way to move between the units used in property, land, planning, and supply quotes without mentally juggling scale.
One listing is in square feet, another is in square metres, and a third uses hectares for the surrounding land. The risk is not that the multiplication is hard. The risk is that you compare unlike numbers as if they were directly comparable.
Flooring, turf, paint coverage, and surface treatments often start from an area measurement, but the quote may arrive in a different unit from the one you measured.
Acres and hectares are both common, and people often have a feel for one but not the other. Converting cleanly helps avoid overconfidence based on familiar-sounding words.
If someone measured the edges of a room in metres, that does not mean the result they need is also in a simple linear conversion. Area is not just “metres but bigger”.
They are not. Small spaces may still seem roughly comparable, but the gap is large enough to affect pricing and planning.
When the area later feeds into a quote, material order, or cost estimate, early rounding can turn into an avoidable mismatch.
A listing of 1,400 square feet sounds more familiar to some buyers, while 130 square metres sounds more familiar to others. Converting both to the same basis is the only fair comparison.
If a supplier prices by square metres and your measurements were taken from an imperial plan, converting accurately is the first step before adding any waste allowance.
A plot measured in acres can feel abstract if your local instinct is hectares, and vice versa. The conversion makes the size easier to reason about before cost, regulation, or use comes into the conversation.
This tool converts area units. It does not calculate the area of an irregular shape, estimate material waste, or tell you how much product to buy. It solves the unit problem, not the whole project.
A hectare is 10,000 m² — the area of a square 100 m on each side. It is the standard unit for measuring land area in most countries and equals 2.471 acres.
An acre is 4,046.86 m², roughly the size of a standard American football field (minus the end zones). It is the standard land area unit in the US and UK.
This tool runs entirely in your browser. Nothing you type or paste is sent to any server — all processing happens locally on your device.