Decimeters to Kilometers
Convert decimeters to kilometers instantly. 1 dm = 0.0001 km. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert decimeters to kilometers
To convert decimeters to kilometers, divide by 10,000 (multiply by 0.0001). The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
km = dm × 0.0001
Decimeters to Kilometers conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Decimeters | Kilometers |
|---|---|
| 1 dm | 0.0001 km |
| 2 dm | 0.0002 km |
| 3 dm | 0.0003 km |
| 5 dm | 0.0005 km |
| 10 dm | 0.001 km |
| 20 dm | 0.002 km |
| 25 dm | 0.0025 km |
| 50 dm | 0.005 km |
| 100 dm | 0.01 km |
| 500 dm | 0.05 km |
| 1,000 dm | 0.1 km |
What is a decimeter?
A tenth of a metre. Rare in practice, but it is the cube root of the litre.
What is a kilometer?
A thousand metres. The standard road-distance unit almost everywhere except the US and UK.
The formula
km = dm × 0.0001
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Decimeters to Kilometers
- Type the number of decimeters you want to convert.
- Read the result in kilometers straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked kilometers to decimeters page.
Decimeters to Kilometers — frequently asked questions
How many kilometers are in a decimeter?
One decimeter equals 0.0001 km. km = dm × 0.0001
What is the formula to convert decimeters to kilometers?
The formula is km = dm × 0.0001. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert kilometers back to decimeters?
Divide instead of multiplying: one kilometer is 10,000 dm. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this decimeters to kilometers free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the decimeters to kilometers.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 15, 2026 · Calculation runs client-side · No data collected · Report an error