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Square Millimeters Converter

Convert square millimeters (mm²) to other units, with every conversion from 1 mm² listed.

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.

About valueA number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
About toThe unit you want the answer in. Swap exchanges the two units.
Result
Result
2.47105381467 × 10⁻¹⁰ ac
square miles
3.86102158542 × 10⁻¹³ sq mi
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 meters
1 × 10⁻⁶ m²
square centimeters
0.01 cm²
square micrometers
1,000,000 µm²

1 mm² = 2.47105381467 × 10⁻¹⁰ ac

Show the working
  1. 1 mm² = 2.47105381467e-10 ac
  2. 1 × 2.47105381467e-10 = 2.47105381467e-10 ac

1 mm² in other units

Conversion1 mm² equals
Square Millimeters to acres2.47105381467 × 10⁻¹⁰ ac
Square Millimeters to ares1 × 10⁻⁸ a
Square Millimeters to hectares1 × 10⁻¹⁰ ha
Square Millimeters to square centimeters0.01 cm²
Square Millimeters to square feet1.07639104167 × 10⁻⁵ sq ft
Square Millimeters to square inches0.00155000310001 sq in
Square Millimeters to square kilometers1 × 10⁻¹² km²
Square Millimeters to square meters1 × 10⁻⁶ m²
Square Millimeters to square miles3.86102158542 × 10⁻¹³ sq mi
Square Millimeters to square yards1.1959900463 × 10⁻⁶ sq yd

About the units

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

Part of the Area ConverterReviewed