Square Yards to Square Kilometers
Type a value in either box to convert between square yards and square kilometers. The factor is 8.36127e-07.
| Square Yards | Square Kilometers |
|---|---|
| 1 yd² | 8.36127e-07 km² |
| 2 yd² | 1.67225e-06 km² |
| 3 yd² | 2.50838e-06 km² |
| 5 yd² | 4.18064e-06 km² |
| 10 yd² | 8.36127e-06 km² |
| 25 yd² | 2.09032e-05 km² |
| 50 yd² | 4.18064e-05 km² |
| 100 yd² | 8.36127e-05 km² |
How to use
- Enter a value in the Square Yards field.
- The Square Kilometers figure appears immediately — no button to press.
- Typing in the Square Kilometers field converts back to Square Yards the same way.
- Use the reference table for the values that come up most often.
Square Yards to Square Kilometers formula
To convert square yards to square kilometers, multiply by 8.3612736e-07.
km² = yd² × 8.3612736e-07
Why this factor: the square yard and the square kilometer are both defined against the square meter, so dividing one definition by the other gives 8.3612736e-07 directly. Both definitions are set out in full below.
To go the other way, divide by 8.3612736e-07 — or use the Square Kilometers to Square Yards converter, which is the same calculation reversed.
Worked example
Given 1000 yd², multiplying by 8.3612736e-07 yields 0.000836 km².
1000 yd² × 8.3612736e-07 = 0.000836 km²
The converter above does this for any value you type, in either direction.
What is a square yard?
A square yard is the area of a one-yard square — nine square feet.
Definition: Exactly 0.83612736 square meter, following from the exact 0.9144 m yard.
Where it is used: Carpet, turf and paving quantities in the US and UK.
What is a square kilometer?
A square kilometer is the area of a one-kilometer square — one million square meters.
Definition: Exactly 1×10⁶ square meters. Note it is the kilometer that is squared, not the prefix applied to a square meter.
Where it is used: City, national park and country areas, population density, and land cover statistics.
Square Yards vs Square Kilometers
The square yard is an imperial unit while the square kilometer is a metric unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many square kilometers are in a square yard?
One square yard equals 8.3612736e-07 square kilometers.
What is the formula to convert square yards to square kilometers?
Multiply the number of square yards by 8.3612736e-07. To reverse it, divide by 8.3612736e-07 instead.
How do I convert square kilometers back to square yards?
Divide by 8.3612736e-07, which is the same as multiplying by 1195990.05.
How many square kilometers are in 10 square yards?
10 yd² works out to 8.36127e-06 km².
How is the square yard defined?
Exactly 0.83612736 square meter, following from the exact 0.9144 m yard.