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1 m ≈ 0.001 km.
Formula and calculation
km = m × 0.001
Substituting 1 m gives approximately 0.001 km. Definitions use the constants above; arithmetic uses browser floating point and displays at most 12 significant digits. The rounded table is not an instrument calibration or certified measurement.
Which units does this page use?
meters: SI metre, a measure of length.
kilometers: one thousand metres.
When this direction is useful
Start here when your source record uses m for room dimensions and construction plans, but the receiving specification is expressed in km for travel distances and route descriptions. Enter the original quantity rather than reusing a previously rounded result. If your source uses km, use the reverse converter instead.
Conversion table
| meters (m) | kilometers (km) |
|---|---|
| 0 | 0 |
| 1 | 0.001 |
| 5 | 0.005 |
| 10 | 0.01 |
| 100 | 0.1 |
Limits and interpretation
These are non-negative physical quantities; negative inputs are rejected. Converting a unit changes neither the measured object nor the original precision. Use a decimal dot; grouping commas are not accepted. No external rates, live data or account are involved.
Frequently asked questions
Can I convert the other way?
Yes. Convert kilometers to meters with the inverse equation. Rounding a result before converting it back can introduce a small difference.
Are these the same as every similarly named unit?
No. Check the two definitions above. International length, avoirdupois mass, US customary liquid measures and temperature readings are explicitly distinguished; an ambiguous label on a source document must be resolved first.
Where do the conversion definitions come from?
They use SI and defined customary conversion relationships. See the NIST Guide for the Use of SI. Output formatting is this tool's display policy, not extra measurement accuracy.