Skip to content
RK Calculator
Menu

Square Millimeters to Square Meters Converter

Convert square millimeters (mm²) to square meters (m²), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an area, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
1 × 10⁻⁶ m²
square miles
3.86102158542 × 10⁻¹³ sq mi
acres
2.47105381467 × 10⁻¹⁰ ac
square yards
1.1959900463 × 10⁻⁶ sq yd
square feet
1.07639104167 × 10⁻⁵ sq ft
square inches
0.00155000310001 sq in
square kilometers
1 × 10⁻¹² km²
hectares
1 × 10⁻¹⁰ ha
ares
1 × 10⁻⁸ a
square centimeters
0.01 cm²
square micrometers
1,000,000 µm²

1 mm² = 1 × 10⁻⁶ m²

Show the working
  1. 1 mm² = 1e-6 m²
  2. 1 × 1e-6 = 1e-6 m²

How to convert square millimeters to square meters

1 mm² = 1 × 10⁻⁶ m², so multiply by 1 to go from square millimeters to square meters. Going the other way, 1 m² = 1,000,000 mm².

m² = mm² × 1
mm² = m² × 1,000,000

Worked example:

1 mm² = 1e-6 m²
5 × 1e-6 = 5e-6 m²

Square Millimeters to square meters table

Square MillimetersSquare Meters
1 mm²1 × 10⁻⁶ m²
2 mm²2 × 10⁻⁶ m²
3 mm²3 × 10⁻⁶ m²
4 mm²4 × 10⁻⁶ m²
5 mm²5 × 10⁻⁶ m²
6 mm²6 × 10⁻⁶ m²
7 mm²7 × 10⁻⁶ m²
8 mm²8 × 10⁻⁶ m²
9 mm²9 × 10⁻⁶ m²
10 mm²1 × 10⁻⁵ m²
15 mm²1.5 × 10⁻⁵ m²
20 mm²2 × 10⁻⁵ m²
25 mm²2.5 × 10⁻⁵ m²
30 mm²3 × 10⁻⁵ m²
40 mm²4 × 10⁻⁵ m²
50 mm²5 × 10⁻⁵ m²
75 mm²7.5 × 10⁻⁵ m²
100 mm²0.0001 m²
250 mm²0.00025 m²
500 mm²0.0005 m²
1000 mm²0.001 m²

About the units

Square Millimeters (mm²)
Square millimeters, a metric unit. Definition: BIPM SI Brochure (SI prefixes).
Square Meters (m²)
Square meters, a metric unit. Definition: BIPM SI Brochure.

Formula version 0.1.0Reviewed