Area Converters

Convert square metres, acres, hectares, square feet and more.

Area converters trip people up because the factor for a square unit is the square of the factor for the matching length. A mile is 1.609344 kilometres, but a square mile is 1.609344 × 1.609344, about 2.589988 square kilometres, not 1.6. The converters here list the factor they use, so you can check the arithmetic yourself.

The area unit converter converts between any pair of area units in one place. The single-purpose pages cover common pairs: acres to hectares, acres to square feet, square feet to square metres, square metres to square feet and square miles to square kilometres. Each page explains its factor and gives worked examples, which helps when you are comparing building plots, floor plans, farmland or the size of a property listing.

Popular area converters

• Area ConverterAny two area units, with the exact size of each in square metres.
• Acres to Hectares ConverterAcres to hectares, with a table of common sizes.
• Square Feet to Square Meters ConverterFloor and room areas from square feet to square metres.
• Square Meters to Square Feet ConverterSquare metres to square feet, with a table of everyday sizes.

All area converters

• Acres to Hectares ConverterEnter an area in acres and the equivalent in hectares appears immediately. Below you will find the exact factor, the reverse rule for hectares to acres, worked examples and a table of common sizes.
• Acres to Square Feet ConverterType a number of acres and the equivalent in square feet is shown at once. The guide explains where 43,560 comes from, walks through two examples and lists common lot sizes.
• Area ConverterPick a unit on each side, type an area and the converted value appears straight away. The guide lists the exact size of every unit in square meters, with worked examples and the mistakes to avoid.
• Square Feet to Acres ConverterEnter an area in square feet and the number of acres is shown at once. The guide explains the divisor, gives lot-size examples and lists the square footage of familiar fractions of an acre.
• Square Feet to Square Meters ConverterEnter a floor or room area in square feet and the equivalent in square meters is shown immediately. The guide covers the exact factor, a common squaring mistake, worked examples and a table.
• Square Kilometers to Square Miles ConverterType an area in square kilometers and the equivalent in square miles shows up immediately. Read on for the factor, why it is not simply 0.6214, worked examples and a table of common sizes.
• Square Meters to Square Feet ConverterType an area in square meters and the equivalent in square feet is displayed immediately. The guide shows where 10.7639 comes from, works through examples and gives a table of everyday sizes.
• Square Miles to Square Feet ConverterEnter an area in square miles and the number of square feet appears instantly. The guide explains the factor, gives worked examples for large tracts of land and lists common values in a table.
• Square Miles to Square Kilometers ConverterEnter an area in square miles and the answer in square kilometers is displayed instantly. The guide gives the exact factor, explains why it is not the same as the length factor and offers a table of common values.