Work out freight rate per tonne instantly with clear inputs, formula shown and shareable results.
Freight rate per tonne is total freight divided by cargo lifted, and dividing again by distance gives the rate per tonne-mile that allows voyages of different lengths to be compared. Setting freight against voyage cost gives the contribution, the figure that matters when choosing between competing cargoes.
Freight metrics
rate per tonne = freight / cargo; per tonne-mile = freight / (cargo x distance)
Marine results are planning estimates only. Verify against the vessel's approved stability booklet, loading manual, class society rules and applicable maritime regulations before loading or sailing.
Voyage contribution divided by voyage days. It converts a voyage charter into a daily rate so it can be compared with the time charter market.
Because a short voyage at a low per-tonne rate can be more profitable per day than a long voyage at a high one.