What is the standard SI base or derived unit for area?

In the International System of Units (SI), area is quantified relative to fundamental physical standards defined by BIPM. UnitGlide references these exact metric constants for all calculations.

How many area units can I convert on UnitGlide?

UnitGlide currently supports 39 different area units, including SI metric, British Imperial, US Customary, and scientific standard units.

How do I convert between different area units?

Enter your known value into the 'Convert from' field, choose your starting unit, and select your target unit. UnitGlide computes the answer instantly using 12-digit floating point arithmetic.

Area Converter

Convert area units including square meter, square kilometer, square centimeter, square millimeter, square micrometer and many more area units instantly and accurately.

From

10 square meters (m^2) = 0 square kilometers (km^2)

Decimal places:

Formula:

km^2 = m^2 × 0.000001

Popular Area Conversions

Quick access to the most commonly used area conversions.

⇄acres to square feet

⇄square feet to acres

⇄hectare to acres

⇄acres to hectare

⇄square feet to square meter

⇄square meter to square feet

⇄acres to square miles

⇄square miles to acres

About Area Units

Free online area converter - converts between 40 units of area, including square meter [m^2], square kilometer [km^2], square centimeter [cm^2], square millimeter [mm^2], etc. Also, explore many other unit converters or learn more about area unit conversions. Different unit systems are used worldwide, including the Metric System (SI) and the Imperial / US Customary System.

Metric System (SI)

The metric system is the most widely adopted international measurement standard. The base unit is the square meter.

Imperial System (US)

The imperial system is commonly used in the United States and specialized international industries including aviation and maritime navigation.

Common Area Units

Here are some of the most common area units and their abbreviations.

Unit	Symbol	Type	In Square meter
Square meter	m^2	Metric (base)	1 m^2
Square kilometer	km^2	Metric	1000000 m^2
Square centimeter	cm^2	Metric	0.0001 m^2
Square millimeter	mm^2	Metric	0.000001 m^2
Square micrometer	µm^2	Metric	0 m^2
Hectare	ha	Standard	10000 m^2
Acre	ac	Imperial	4046.856422 m^2
Square mile	mi^2	Imperial	2589988.11034 m^2
Square yard	yd^2	Imperial	0.836127 m^2
Square foot	ft^2	Imperial	0.092903 m^2