# Square metre

m 2 square metersquare meterssquare metressquare centimetrecm 2 m2mm 2 square centimeter
The square metre (international spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area with symbol m 2 .wikipedia
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### SI derived unit

derived unitderived unitsJ/kg
The square metre (international spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area with symbol m 2 .
The SI has special names for 22 of these derived units (for example, hertz, the SI unit of measurement of frequency), but the rest merely reflect their derivation: for example, the square metre (m 2 ), the SI derived unit of area; and the kilogram per cubic metre (kg/m 3 or kg⋅m −3 ), the SI derived unit of density.

### Area

surface areaArea (geometry)area formula
The square metre (international spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area with symbol m 2 .
In the International System of Units (SI), the standard unit of area is the square metre (written as m 2 ), which is the area of a square whose sides are one metre long.

### Metric prefix

SI prefixunit prefixprefix
Adding and subtracting SI prefixes creates multiples and submultiples; however, as the unit is exponentiated, the quantities grow geometrically by the corresponding power of 10.

### Square kilometre

km²km 2 square kilometer
Square kilometre (International spelling as used by the International Bureau of Weights and Measures) or square kilometer (American spelling), symbol km 2, is a multiple of the square metre, the SI unit of area or surface area.

### Square yard

square yardsyards
The square yard (India: gaz) is an imperial unit of area, formerly used in most of the English-speaking world but now generally replaced by the square metre, however it is still in widespread use in the U.S., Canada, the U.K. and India.

### Conversion of units

conversion factorunit conversionConversions

### Orders of magnitude (area)

km²0.32 km²1 E3 m²

### Square foot

square feetsq ftsquare-foot

### International System of Units

SISI unitsSI unit

### Square inch

in 2 in²inches square

### American and British English spelling differences

spelling differencesorsee spelling differences
The square metre (international spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area with symbol m 2 .

### International Bureau of Weights and Measures

BIPMBureau International des Poids et MesuresInternational Bureau for Weights and Measures
The square metre (international spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area with symbol m 2 .

### Exponentiation

exponentpowerpowers
Adding and subtracting SI prefixes creates multiples and submultiples; however, as the unit is exponentiated, the quantities grow geometrically by the corresponding power of 10.

### Quantity

quantitiesquantitativeamount
Adding and subtracting SI prefixes creates multiples and submultiples; however, as the unit is exponentiated, the quantities grow geometrically by the corresponding power of 10.

### Exponential growth

exponentiallyexponentialgrow exponentially
Adding and subtracting SI prefixes creates multiples and submultiples; however, as the unit is exponentiated, the quantities grow geometrically by the corresponding power of 10.

### Power of 10

powers of 10powers of tenpower of ten
Adding and subtracting SI prefixes creates multiples and submultiples; however, as the unit is exponentiated, the quantities grow geometrically by the corresponding power of 10.

### Kilometre

kmkilometerkilometers
For example, a kilometre is 10 3 (a thousand) times the length of a metre, but a square kilometre is 10 3 2 (10 6, a million) times the area of a square metre, and a cubic kilometre is 10 3 3 (10 9, a billion) cubic metres.

### 1000 (number)

thousand10001,000
For example, a kilometre is 10 3 (a thousand) times the length of a metre, but a square kilometre is 10 3 2 (10 6, a million) times the area of a square metre, and a cubic kilometre is 10 3 3 (10 9, a billion) cubic metres.

### 1,000,000

millionMmil
For example, a kilometre is 10 3 (a thousand) times the length of a metre, but a square kilometre is 10 3 2 (10 6, a million) times the area of a square metre, and a cubic kilometre is 10 3 3 (10 9, a billion) cubic metres.

### Billion

BnBbillion dollar
For example, a kilometre is 10 3 (a thousand) times the length of a metre, but a square kilometre is 10 3 2 (10 6, a million) times the area of a square metre, and a cubic kilometre is 10 3 3 (10 9, a billion) cubic metres.

acresacreageac

### List of common physics notations

Variables commonly used in physicscommonly used physics notationsVariables and some constants commonly used in physics

### List of obsolete units of measurement

obsolete British weight measurewas