A rood is one quarter of an acre.
Roods to Square Gigameters Converter — rood to Gm2
Convert Rood (rood) to Square Gigameter (Gm2) using the exact conversion factor (1 rood = 1.011714e-15 square gigameter). See the formula, worked examples, and conversion table.
Roods to Square Gigameters 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+18.
Area uses the square meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Roods to Square Gigameters
Comparing Rood and Square Gigameter 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 gigameters = roods × 1.011714e-15
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 gigameter equals 1e+18 base units, so dividing one by the other gives the direct rood-to-square gigameter factor of 1.011714e-15.
Simple example
1 rood × 1.011714e-15 = 1.011714e-15 Gm2
1 rood = 1.011714e-15 square gigameters.
Real-world example
10 rood × 1.011714e-15 = 1.011714e-14 Gm2
10 roods = 1.011714e-14 square gigameters.
Conversion table
| Rood (rood) | Square Gigameter (Gm2) |
|---|---|
| 1 rood | 1.011714e-15 Gm2 |
| 5 rood | 5.058571e-15 Gm2 |
| 10 rood | 1.011714e-14 Gm2 |
| 25 rood | 2.529285e-14 Gm2 |
| 50 rood | 5.058571e-14 Gm2 |
| 100 rood | 1.011714e-13 Gm2 |
Reverse conversion: Square Gigameter to Rood
1.011714e-15 Gm2 × 9.884215e+14 = 0.9999998956 rood
1.011714e-15 square gigameters = 0.9999998956 roods.
roods = square gigameters × 9.884215e+14
For a page dedicated to this direction, see Square Gigameter to Rood.
Understanding the Rood (rood)
A rood is one quarter of an acre.
Understanding the Square Gigameter (Gm2)
Square metric area unit.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many square gigameters are in 1 rood?
1 rood equals 1.011714e-15 square gigameters, using the exact defined conversion factor rather than an estimate.
How do I convert rood to square gigameter?
Multiply the rood value by 1.011714e-15. The converter above does this instantly to whatever precision you set.
How do I convert square gigameter back to rood?
Use the reverse factor: 1 square gigameter equals 9.884215e+14 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 gigameter?
Square Gigameter (Gm2) is a unit of area.
Is the rood to square gigameter conversion exact?
Yes. Both rood and square gigameter are defined by fixed standards rather than physical artifacts, so the factor of 1.011714e-15 used above is exact to as many digits as you choose to display.