## Convert square millimetre to acre

 square millimeter acre

 Did you mean to convert square millimeter to acre acre [commercial] acre [Ireland] acre [survey]

How many square millimeter in 1 acre? The answer is 4046856422.4.
We assume you are converting between square millimetre and acre.
You can view more details on each measurement unit:
square millimeter or acre
The SI derived unit for area is the square meter.
1 square meter is equal to 1000000 square millimeter, or 0.00024710538146717 acre.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between square millimeters and acres.
Type in your own numbers in the form to convert the units!

## Want other units?

You can do the reverse unit conversion from acre to square millimeter, or enter any two units below:

## Enter two units to convert

 From: To:

## Definition: Acre

An acre is a measure of land area in Imperial units or U.S. customary units. It is equal to 43 560 square feet, 4840 square yards, or 160 square rods. The precise meaning of this depends on the exact definition adopted for a foot: the international acre is 4 046.856 422 4 m² (for the UK, see). For measurements based specifically on the US survey foot the US survey acre is ca. 4 046.872 610 m².

## Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!