Convert square decimeter to square kilometer

Here you can quickly calculate how many square kilometer fit in one square decimeter.

write a number and we convert instantly

swap direction → hm²

- scroll: formula · table · questions -

Conversion from square decimeter to square kilometer example

Starting value Increment Accuracy

To convert square decimeter to square kilometer, divide by 100000000.

1 dm² = 0 km²

Example: 1 square decimeter = 0 square kilometer

A hectare is 10,000 m², a 100 × 100 m square, and one square kilometer holds 100 hectares. News stories about wildfires and land plots often mix the two up. Rule of thumb: a football pitch is roughly 0.7 hectares.
For areas the length factor must be squared, using it directly is the classic trap. 1 km is 1,000 m, but 1 km² is 1,000,000 m², and 1 m² is 10,000 cm². The rule: convert the length unit, then square the factor.

Score: 0

20 square decimeter equals 2.0e-6 square kilometer.

Correct answer: 20 square decimeter = 2.0e-7 square kilometer.

1 square decimeter equals 1.0e-8 square kilometer.

Correct answer: 1 square decimeter = 1.0e-8 square kilometer.

2 square kilometer equals 2.0e+8 square decimeter.

Correct answer: 2 square kilometer = 2.0e+8 square decimeter.

50 square decimeter equals 2.5e-6 square kilometer.

Correct answer: 50 square decimeter = 5.0e-7 square kilometer.