Calculate the total voyage time based on distance and vessel speed.
This calculator helps estimate how long a voyage will take by using nautical miles and speed in knots. It is useful for voyage planning, ETA estimation and fuel calculations.
Operational Notes
- Speed is expressed in knots (nautical miles per hour).
- Distance is expressed in nautical miles.
- Weather, currents and traffic separation schemes may affect actual voyage time.
- Use average voyage speed for more realistic estimates.
- This calculator provides a theoretical transit time.
Example Lookup Table
| Distance (NM) | Speed (kn) | Voyage Time |
| 100 | 10 | 10 h |
| 250 | 12 | 20.8 h |
| 500 | 15 | 33.3 h |
| 1000 | 20 | 50 h |
| 3000 | 15 | 200 h |
Frequently Asked Questions
What is a knot?
A knot is one nautical mile per hour.
How is voyage time calculated?
Voyage time equals distance divided by speed.
Does this include weather delays?
No. The calculator assumes constant speed throughout the voyage.
Can I use statute miles?
No. This calculator uses nautical miles only.