Instant · Precise · Universal
32 units available
7 categories total
To m/s: ÷ 3,600,000. To cm/h: ÷ 10. To m/h: ÷ 1,000.
1 mm/h = 0.001 m/h = 0.0000001 km/h = 0.000000278 m/s.
For example, 1 Millimeter per Hour (mm/h) = 0.001093613298 Yard per Hour (yd/h).
| Millimeter per Hour (mm/h) | Yard per Hour (yd/h) |
|---|---|
| 0.1 | 0.0001093613298 |
| 0.5 | 0.0005468066492 |
| 1 | 0.001093613298 |
| 2 | 0.002187226597 |
| 5 | 0.005468066492 |
| 10 | 0.01093613298 |
| 25 | 0.02734033246 |
| 50 | 0.05468066492 |
| 100 | 0.1093613298 |
| 500 | 0.5468066492 |
| 1000 | 1.093613298 |
Millimeter per hour measures extremely slow movements in millimeters over an hour. Used for minute geological and material changes.
1 mm/h = 0.001 m/h = 0.0000001 km/h = 0.000000278 m/s.
To m/s: ÷ 3,600,000. To cm/h: ÷ 10. To m/h: ÷ 1,000.
Cave formation rates (stalactite/stalagmite growth), extremely slow material creep, and long-term geological monitoring.
Stalactite growth: 0.1–1 mm/h in active caves. Human hair growth: ~0.015 mm/h. Fingernail growth: ~0.004 mm/h.
Using for anything except the slowest processes. Confusing with mm/min (60× faster).
1,000 mm/h = 1 m/h. Extremely specialized unit. Think geological time scales.
Yard per hour measures distance in yards traveled over one hour. Rarely used except in specialized contexts.
1 yd/h = 0.000254 m/s = 0.0009144 km/h = 0.9144 m/h.
To yd/min: ÷ 60. To ft/h: × 3. To m/h: × 0.9144.
No common modern applications. Might appear in some historical documents.
No notable facts — too rarely used.
Even existing is a mistake — use m/h, ft/h, or mph instead.
1,760 yd/h = 1 mph. Extremely uncommon. Better to use other units.



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