Millimeters per second: conversions & definition
Millimeters per second (mm/s) represent speed. One unit equals 10^-3 m/s. Speed is distance per elapsed time. These units prefix the meter while keeping one second fixed.
Choose the unit you need
Each row converts one mm/s. Open a converter to enter any value and see its formula, worked example and reference table. Results below are rounded to 10 significant digits.
| Convert to | Equivalent value | Calculator |
|---|---|---|
| Meters per second (m/s) | ≈ 0.001 | Convert mm/s to m/s |
| Kilometers per second (km/s) | ≈ 0.000001 | Convert mm/s to km/s |
| Micrometers per second (µm/s) | ≈ 1,000 | Convert mm/s to µm/s |
| Megameters per second (Mm/s) | ≈ 1e-9 | Convert mm/s to Mm/s |
| Nanometers per second (nm/s) | ≈ 1,000,000 | Convert mm/s to nm/s |
| Gigameters per second (Gm/s) | ≈ 1e-12 | Convert mm/s to Gm/s |
| Centimeters per second (cm/s) | ≈ 0.1 | Convert mm/s to cm/s |
| Decimeters per second (dm/s) | ≈ 0.01 | Convert mm/s to dm/s |
| Hectometers per second (hm/s) | ≈ 0.00001 | Convert mm/s to hm/s |
| Decameters per second (dam/s) | ≈ 0.0001 | Convert mm/s to dam/s |
| Picometers per second (pm/s) | ≈ 1,000,000,000 | Convert mm/s to pm/s |
| Terameters per second (Tm/s) | ≈ 1e-15 | Convert mm/s to Tm/s |
| Femtometers per second (fm/s) | ≈ 1e+12 | Convert mm/s to fm/s |
| Petameters per second (Pm/s) | ≈ 1e-18 | Convert mm/s to Pm/s |
| Attometers per second (am/s) | ≈ 1e+15 | Convert mm/s to am/s |
| Exameters per second (Em/s) | ≈ 1e-21 | Convert mm/s to Em/s |
| Zeptometers per second (zm/s) | ≈ 1e+18 | Convert mm/s to zm/s |
| Zettameters per second (Zm/s) | ≈ 1e-24 | Convert mm/s to Zm/s |
| Yoctometers per second (ym/s) | ≈ 1e+21 | Convert mm/s to ym/s |
| Yottameters per second (Ym/s) | ≈ 1e-27 | Convert mm/s to Ym/s |
Keep the quantity consistent
Choose units that represent the same quantity and preserve the measurement conditions. A scale conversion changes the number and unit together; it does not change the physical amount or improve the accuracy of your measurement.
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