By Debmedia Technologies LLP · Kolkata, India · Updated
What Is It and When Do You Need It?
Area measures the size of a flat surface. The square metre is the SI unit, land is often sold by the hectare or the acre, and floors and rooms are measured in square feet in many countries.
This converter handles 12 units for square metre and shows the result in all of them at once, so you rarely need a second lookup.
How to Use This Tool
- Type the value you want to convert.
- Choose the unit you have in the From list.
- Choose the unit you want in the To list.
- Press Convert and read the answer and the table of every unit.
How the Calculation Works
Every unit is stored as a multiple of one reference unit (the square metre). To convert, the value is multiplied into the reference unit and then divided by the size of the target unit. All factors are exact or taken from standard definitions, and results show up to ten significant digits.
Worked Example
| You enter | You get |
|---|---|
| 1 mm² | 0.01 cm² |
| 10 mm² | 1e-05 m² |
| 100 cm² | 10000 mm² |
Reference values:
| From | To |
|---|---|
| 1 Square millimetre | 0.01 cm² |
| 1 Square millimetre | 1e-06 m² |
| 1 Square millimetre | 1e-12 km² |
| 1 Square millimetre | 0.0015500031 in² |
| 1 Square millimetre | 1.076391e-05 ft² |
| 1 Square millimetre | 1.19599e-06 yd² |
| 1 Square millimetre | 3.861022e-13 mi² |
| 1 Square millimetre | 2.471054e-10 ac |
| 1 Square millimetre | 1e-10 ha |
| 1 Square millimetre | 3.953686e-8 rod² |
| 1 Square millimetre | 1e22 b |
Common Uses
- Property, land and flat sizes quoted in square feet or acres.
- Flooring, paint and tile estimates.
- Farming and forestry in hectares.
- Physics work with tiny areas in barns.
Tips and Common Mistakes
- One hectare is 10,000 square metres and about 2.471 acres.
- One acre is 43,560 square feet.
- Use the table under the answer to see the same value in every unit.
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