Convert Square Yard to Square Kilometer (yd² → km²)

Converting square yards to square kilometers is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.

1. 1
   Take your value in square yards

   Start with the number of square yards (yd²) you want to convert.
2. 2
   Multiply by 8.361e-7

   The conversion factor from yd² to km² is 8.361e-7. Multiply your value by this number.
3. 3
   Read the result in square kilometers

   The result is your value in square kilometers (km²).

Multiply the value in square yards by 8.361e-7. For the reverse direction, multiply by 1,195,990.

• ✓1 yd² = 9 ft² = 0.8361 m².
• ✓1 m² = 1.196 yd² — a square metre is slightly larger than a square yard.
• ✓Carpet rolls often come 12 ft wide — calculate yd² based on room length.

• ✗Conflating yd² with yd — different units.
• ✗Using yd² in metric architectural plans — stick to m².
• ✗Ordering too little carpet by miscalculating offcuts.

What is the Square Yard?

The square yard equals exactly 0.83612736 square meters (or 9 square feet) and is used for American and British carpet, fabric, landscaping, and small construction projects. Carpet pricing in the US has historically been per square yard, though many retailers now also quote per square foot. Lawn-fertilizer applications and grass-seed coverage often specify rates per 1,000 yd². The square yard relates to the square foot (9 ft² = 1 yd²), the square meter (1 yd² ≈ 0.836 m²), and the acre (4,840 yd² = 1 acre). Despite the prevalence of square feet in real estate and construction, the square yard remains entrenched in textile and landscaping commerce. A typical bedroom carpet is 12–20 square yards.

• Carpet and flooring orders (US and UK)
• Landscaping turf and sod
• Older UK property descriptions

What is the Square Kilometer?

The square kilometer equals 1,000,000 square meters (or 100 hectares) and is the international standard for measuring large areas: cities, national parks, lakes, watersheds, and country-level statistics. Population density is conventionally given in people per km² (e.g., Singapore has roughly 8,400 people/km², Mongolia has fewer than 2). The largest US national park, Wrangell-St. Elias in Alaska, covers about 53,000 km². France is 643,801 km², and the largest country, Russia, spans 17 million km². The square kilometer relates to the square meter (1 km² = 1,000,000 m²), the hectare (1 km² = 100 ha), the square mile (1 km² ≈ 0.386 mi²), and the acre (1 km² ≈ 247.1 acres). Geographic information systems, climate science, and regional planning all rely on square kilometers as the base unit for area.

• Country and city geographic area reporting
• National-park and protected-area sizes
• Large-scale environmental studies (deforestation, etc.)