Convert square metres to square kilometres

One square metre is 0.000001 square kilometres. To convert any amount, multiply by 0.000001. Going the other way, one square kilometre is 1000000 square metres.

Multiply the square metre figure by 0.000001. So km² = m² × 0.000001. For a quick mental estimate, dividing by about 1000000 gets you close enough for most everyday purposes.

One square metre is a generous doormat, or a small dining table. The square metre is the standard unit for floor area in property listings across the metric world, and increasingly in commercial listings even in the US.

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 m² before converting introduces an error the conversion then multiplies.