Port-to-Port Transit Time Estimator

Port-to-Port Transit Time Estimator helps importers and exporters build an ocean-freight planning timeline from route distance, average vessel speed, transshipment time, and port buffers. Use it to make a transparent early estimate before you receive a carrier schedule.

Ocean shipping timelines are affected by sailing frequency, port omissions, blank sailings, weather, congestion, and customs. This estimator is for planning—not a substitute for a confirmed booking or carrier arrival notice.

• Distance and speed model: Estimate sailing days from nautical miles and knots.
• Transshipment allowance: Add connection days for indirect services.
• Origin and destination buffers: Model port handling and schedule variability.
• Arrival-date estimate: Start from an ETD and see an indicative ETA.
• Clear breakdown: See sailing, transfer, buffer, and total time separately.

1. Enter estimated route distance in nautical miles.
2. Set a realistic average vessel speed and transshipment days.
3. Add planning buffers for both ports.
4. Enter ETD to generate an estimated arrival date.
5. Confirm with the carrier before committing inventory or delivery dates.

Example: A 6,000 nm route at 16 knots takes about 15.6 sailing days. Add 4 days for a transshipment and 3 days of buffers for an estimated 23-day port-to-port planning window.

• Plan inventory: Build an early ETA before booking details are final.
• Communicate assumptions: Separate sea time from transfer and buffer days.
• Reduce surprises: Avoid treating a carrier’s quoted transit as door-to-door time.