Millimeters per Hour to Millimeters per Second
Convert millimeters per hour (mm/h) to millimeters per second (mm/s) instantly. Free online speed converter with formulas, tables and examples.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Results update instantly for Millimeters per Hour to Millimeters per Second conversions.
Reserved above the conversion cards and below the converter.
Formula
mm/s = mm/h × 0.000278
mm/h = mm/s × 3600
Conversion table
| 1 mm/h | 0.000278 mm/s |
| 5 mm/h | 0.001389 mm/s |
| 10 mm/h | 0.002778 mm/s |
| 20 mm/h | 0.005556 mm/s |
| 50 mm/h | 0.013889 mm/s |
| 100 mm/h | 0.027778 mm/s |
| 500 mm/h | 0.138889 mm/s |
| 1000 mm/h | 0.277778 mm/s |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is millimeters per hour (mm/h), a unit of speed equal to the distance in millimeters covered every hour.
What is the destination unit in this conversion?
The destination unit is millimeters per second (mm/s), a unit of speed equal to the distance in millimeters covered every second.
How do I convert millimeters per hour to millimeters per second?
Multiply the millimeters per hour value by 0.000278 to get millimeters per second. For example, 100 mm/h × 0.000278 = 0.027778 mm/s.
Is the millimeters per hour to millimeters per second conversion exact?
Both units are defined using fixed conversion constants, so the results shown are calculated with full precision.
Where is this conversion commonly used?
It is used across transportation, sports timing, engineering, and scientific contexts where speeds need to be compared between millimeters per hour and millimeters per second.
Can I convert millimeters per second back to millimeters per hour?
Yes. Divide by 0.000278 (or multiply by 3600) to convert back, or use the millimeters per second to millimeters per hour converter directly.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts millimeters per hour (mm/h) into millimeters per second (mm/s), two units used to express speed or velocity.
Millimeters per Hour is a unit of speed equal to the distance in millimeters covered every hour, while millimeters per second is a unit of speed equal to the distance in millimeters covered every second.
This conversion helps travelers, engineers, scientists, and enthusiasts compare speeds expressed in different measurement systems.
The formula is mm/s = mm/h × 0.000278, based on the fixed relationship between these two speed units.
Use the calculator above for instant results, or refer to the conversion table for common reference values.