1 nautical league (international)/hour = 1543.333333 mm/s; 1 mm/s = 0.000648 nautical league (international)/hour
um/s ↔ mm/s
fps ↔ mps
km/d ↔ kph
kph ↔ mps
mps ↔ mph
in/s ↔ mm/s
kph ↔ mph
kt ↔ mps
cm/s ↔ kph
fpm ↔ mps
cm/s ↔ mps
mm/s ↔ mps
mi/min ↔ yd/s