A rood is one quarter of an acre.
Roods to Square Millimeters Converter — rood to mm2
Convert Rood (rood) to Square Millimeter (mm2) using the exact conversion factor (1 rood = 1,011,714,106 square millimeter). See the formula, worked examples, and conversion table.
Roods to Square Millimeters converter
Converter
Area Converter
Convert land, construction, mapping, survey, and scientific area units.
Context values
Some unit families need one extra value for a physically accurate result.
Square metric area unit.
Result = input x 1011.714106 / 1e-6.
Area uses the square meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Roods to Square Millimeters
Comparing Rood and Square Millimeter is common in agriculture and real estate, where US land is typically measured in acres and most of the rest of the world uses hectares. Specifically: A rood is one quarter of an acre, and square metric area unit.
Formula
square millimeters = roods × 1011714105.6
This factor comes from each unit's defined relationship to the category's base unit: 1 rood equals 1011.7141056 base units, and 1 square millimeter equals 0.000001 base units, so dividing one by the other gives the direct rood-to-square millimeter factor of 1011714105.6.
Simple example
1 rood × 1011714106 = 1,011,714,106 mm2
1 rood = 1,011,714,106 square millimeters.
Real-world example
10 rood × 1011714106 = 10,117,141,060 mm2
10 roods = 10,117,141,060 square millimeters.
Conversion table
| Rood (rood) | Square Millimeter (mm2) |
|---|---|
| 1 rood | 1,011,714,106 mm2 |
| 5 rood | 5,058,570,528 mm2 |
| 10 rood | 10,117,141,060 mm2 |
| 25 rood | 25,292,852,640 mm2 |
| 50 rood | 50,585,705,280 mm2 |
| 100 rood | 101,171,410,600 mm2 |
Reverse conversion: Square Millimeter to Rood
1 mm2 × 9.884215e-10 = 9.884215e-10 rood
1 square millimeter = 9.884215e-10 roods.
roods = square millimeters × 9.884215e-10
For a page dedicated to this direction, see Square Millimeter to Rood.
Understanding the Rood (rood)
A rood is one quarter of an acre.
Understanding the Square Millimeter (mm2)
Square metric area unit.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many square millimeters are in 1 rood?
1 rood equals 1,011,714,106 square millimeters, using the exact defined conversion factor rather than an estimate.
How do I convert rood to square millimeter?
Multiply the rood value by 1011714106. The converter above does this instantly to whatever precision you set.
How do I convert square millimeter back to rood?
Use the reverse factor: 1 square millimeter equals 9.884215e-10 roods. You can also use the swap control in the converter above to flip the direction instantly.
What is a rood?
Rood (rood) is a unit of area.
What is a square millimeter?
Square Millimeter (mm2) is a unit of area.
Is the rood to square millimeter conversion exact?
Yes. Both rood and square millimeter are defined by fixed standards rather than physical artifacts, so the factor of 1011714106 used above is exact to as many digits as you choose to display.