Convert Square Kilometer to Hectare (km² → ha)

Converting square kilometers to hectares 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 kilometers

   Start with the number of square kilometers (km²) you want to convert.
2. 2
   Multiply by 100

   The conversion factor from km² to ha is 100. Multiply your value by this number.
3. 3
   Read the result in hectares

   The result is your value in hectares (ha).

Multiply the value in square kilometers by 100. For the reverse direction, multiply by 0.01.

• ✓1 km² = 100 hectares = 1,000,000 m².
• ✓1 km² = 0.386 square miles.
• ✓Multiply km × km in metric to get km² — but always keep consistent units.

• ✗Mixing km² and km when comparing geography — 10 km is a length, 10 km² is an area.
• ✗Confusing km² with the square mile (mi²) in international comparisons.
• ✗Reading "million km²" as "km²" on continental-scale maps — factor of 10⁶.

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.)

What is the Hectare?

The hectare equals exactly 10,000 square meters (100 m × 100 m) and is the international standard area unit for agricultural land, forestry, and large land development. Adopted as part of the metric system in 1795, the hectare's name combines 'hect-' (one hundred) with 'are' (the basic metric land unit of 100 m²) — meaning 100 ares. A standard FIFA football pitch covers about 0.7 hectares, and Central Park in New York is approximately 341 hectares. Farms across Europe, Latin America, Africa, and Asia are sized in hectares (a small family farm might be 5–20 ha). The hectare relates to the square meter (1 ha = 10,000 m²), the square kilometer (100 ha = 1 km²), the acre (1 ha ≈ 2.471 acres), and the square mile (1 ha ≈ 0.00386 mi²). It is one of the few non-SI units accepted for use with SI for legal land measurement.

• European farm, vineyard and orchard size
• Forestry and conservation land
• Large construction projects and urban development