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Area unit converter

Convert between square metres, mu, square feet and other area units.

square metre → mu
1 m² = 0.0015 mu
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Area unit converter

Area measures the size of a surface or region, used for land, floors, rooms and screens. Square metres and hectares are common worldwide, mu is standard for farmland in China, and acres and square feet are used in the US and UK.

This converter covers metric, Chinese traditional and imperial area units — 15 in total — from square centimetres to hectares, mu and acres, all based on the square metre.

Area conversions usually fail on definitions, not arithmetic. A mu is 666.666… m², or exactly 1/15 hectare. A hectare is 10,000 m². A square kilometre is 100 hectares, or 1500 mu. An acre is 4,046.8564 m², about 6.0703 mu. Fix these anchors first, then decide how to round.

The most useful anchor is 1 hectare = 15 mu. A 100 m × 100 m plot is 1 ha, or 15 mu; a 1 km × 1 km block is 100 ha, or 1500 mu. If a document says 0.6 ha, that is 9 mu, not 6 mu: the decimal belongs to the hectare.

Mu is a repeating decimal of a square metre, so rounding mu to two decimals before converting again accumulates error. Survey and subsidy documents often carry three or four decimals. Convert everything to square metres as the common base, round once at the end, and state the unit. Rounding 0.3333 ha to 0.33 ha changes the area by 33 m², which matters when payment is per square metre.

A quick sanity check: a standard football pitch is about 0.714 ha (10.7 mu), and a 100 m² apartment is 0.15 mu. If a result is far outside these scales, the unit or the decimal point is usually wrong. This converter uses the square metre as the base for every area unit, so repeated conversions do not drift.

Unit converter: Target value = source value × (source unit factor ÷ target unit factor). All units are defined relative to the base unit.

Mu, hectare and square kilometre: converting land area correctly →

Area unit converter · FAQ

How do you convert square metres to mu?
Divide square metres by 666.67. For example, 500 m² ≈ 0.75 mu.
How many square metres are in a hectare?
One hectare is 10,000 m², or 15 mu.
How many square feet are in a square metre?
One square metre is about 10.764 square feet.