EVERYDAY
Area
Surface, land and cross-sectional area.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result100000000 mm²1 a = 100000000 mm²
EVERYDAY · ENGINEERING · SCIENCE
a to mm² Converter
Convert are (a) to square millimetre (mm²). Enter a value for an instant result, or use the examples and reverse conversion below.
520units ready to convert
HOW IT IS CALCULATED
Convert through square metre
Enter a are value to calculate square millimetre with full internal precision before display rounding.
Display PrecisionAuto · 6 significant digits
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| square micrometrefrom a | µm² | 100000000000000 |
| square millimetrefrom a | mm² | 100000000 |
| square centimetrefrom a | cm² | 1000000 |
| square decimetrefrom a | dm² | 10000 |
| square metrefrom a | m² | 100 |
| arefrom a | a | 1 |
| hectarefrom a | ha | 0.01 |
| square kilometrefrom a | km² | 0.0001 |
| square inchfrom a | in² | 155000 |
| square footfrom a | ft² | 1076.39 |
| square yardfrom a | yd² | 119.599 |
| acrefrom a | acre | 0.0247105 |
| square milefrom a | mi² | 0.0000386102 |
| barnfrom a | b | 1e30 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
a to mm² Conversion Reference
Are (a) and square millimetre (mm²) are units of area. Use this page to convert in either direction.
Conversion Examples
| Are (a) | Square Millimetre (mm²) |
|---|---|
| 1 a | 100000000 mm² |
| 5 a | 500000000 mm² |
| 10 a | 1000000000 mm² |
| 100 a | 10000000000 mm² |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
Reverse Conversion
mm² to a (square millimetre to are)
Related Area Conversions
a to µm² (are to square micrometre)a to cm² (are to square centimetre)a to dm² (are to square decimetre)a to m² (are to square metre)a to ha (are to hectare)a to km² (are to square kilometre)a to in² (are to square inch)a to ft² (are to square foot)a to yd² (are to square yard)a to acre (are to acre)a to mi² (are to square mile)a to b (are to barn)