Convert hectares to square kilometres

One hectare is 0.01 square kilometres. To convert any amount, multiply by 0.01. Going the other way, one square kilometre is 100 hectares.

Multiply the hectare figure by 0.01. So km² = ha × 0.01. For a quick mental estimate, dividing by about 100 gets you close enough for most everyday purposes.

One hectare is about two and a half acres. A hectare is exactly 10,000 square metres — a square 100 m on a side — and is the standard agricultural land unit in the metric world.

One square kilometre is a medium city park. The square kilometre is the standard unit for reporting the area of cities, parks and countries in the metric world.

Yes. Since the 1959 international yard and pound agreement, the imperial and metric systems are related by exact definitions rather than measurements — the inch is exactly 25.4 mm and the pound exactly 0.45359237 kg. Everything derived from those, including this conversion, is therefore exact. Round at the end rather than partway through, since rounding ha before converting introduces an error the conversion then multiplies.