Free tool
Demurrage and Despatch Calculator
Find net demurrage or despatch by calculating allowed and used time at load and discharge ports separately or together (reversible). No sign-up needed; results update as you type.
See the system that does this automaticallyOpen the live demoDemurrage and Despatch Calculator: worked example
Example values: Load port allowed 120 hours, Load port used 140 hours, Discharge port allowed 96 hours, Discharge port used 80 hours, Laytime Separate (non-reversible), Daily demurrage 15,000 USD, Daily despatch 7,500 USD. With these values the results are:
| Load port result | 12,500 USD |
|---|---|
| Discharge port result | -5,000 USD |
| Combined calculation | 2,500 USD |
| Net demurrage (+) / despatch (−) | 7,500 USD |
How to use: Demurrage and Despatch Calculator
- Enter your own values: Load port allowed, Load port used, Discharge port allowed, Discharge port used, Laytime, Daily demurrage, Daily despatch.
- Choose the currency; money inputs are converted at an approximate rate.
- Results are calculated as you type: Load port result, Discharge port result, Combined calculation, Net demurrage (+) / despatch (−).
- Check every step of the calculation in the formulas below.
How is it calculated?
- Load port result = if([Load port used] > [Load port allowed]; ([Load port used] − [Load port allowed]) ÷ 24 × [Daily demurrage]; ([Load port used] − [Load port allowed]) ÷ 24 × [Daily despatch])
- Discharge port result = if([Discharge port used] > [Discharge port allowed]; ([Discharge port used] − [Discharge port allowed]) ÷ 24 × [Daily demurrage]; ([Discharge port used] − [Discharge port allowed]) ÷ 24 × [Daily despatch])
- Combined calculation = if([Load port used] + [Discharge port used] > [Load port allowed] + [Discharge port allowed]; ([Load port used] + [Discharge port used] − [Load port allowed] − [Discharge port allowed]) ÷ 24 × [Daily demurrage]; ([Load port used] + [Discharge port used] − [Load port allowed] − [Discharge port allowed]) ÷ 24 × [Daily despatch])
- Net demurrage (+) / despatch (−) = if([Combined calculation] = 1; [Combined calculation]; [Load port result] + [Discharge port result])
Other tools running on Laytime and Charter Engine
Calculates laytime, demurrage and despatch from NOR, turn time, excepted periods and rates.
FCRSOFT
FCRSOFT does this for you automatically
You don’t need to do the calculations and checks on this page by hand every day. FCRSOFT derives them all automatically from the records entered in the field.
- Port events are recorded as a timeline.
- Laytime, demurrage and despatch are calculated from port events.
- Port costs are linked to the voyage and the charter party.
Frequently asked questions
How is Demurrage and Despatch Calculator calculated?
Find net demurrage or despatch by calculating allowed and used time at load and discharge ports separately or together (reversible). The calculation uses Laytime and Charter Engine: Calculates laytime, demurrage and despatch from NOR, turn time, excepted periods and rates.
How is Net demurrage (+) / despatch (−) found?
Net demurrage (+) / despatch (−) = if([Combined calculation] = 1; [Combined calculation]; [Load port result] + [Discharge port result]). With the example values (Load port allowed 120 hours, Load port used 140 hours, Discharge port allowed 96 hours, Discharge port used 80 hours, Laytime Separate (non-reversible), Daily demurrage 15,000 USD) the result is 7,500 USD.
Worked example: Demurrage and Despatch Calculator
Example values: Load port allowed 120 hours, Load port used 140 hours, Discharge port allowed 96 hours, Discharge port used 80 hours, Laytime Separate (non-reversible), Daily demurrage 15,000 USD. Load port result: 12,500 USD; Discharge port result: -5,000 USD; Combined calculation: 2,500 USD; Net demurrage (+) / despatch (−): 7,500 USD.
Is Demurrage and Despatch Calculator free?
Yes. The tool is free, needs no sign-up and runs in your browser; the data you enter is not stored.
Can FCRSOFT do this calculation automatically?
FCRSOFT derives the laytime calculation from port events automatically and links it to the charter party. You can try the Voyage & Chartering package in the live demo without installing anything.
Which currency can I calculate in?
Choose one of 28 currencies in the currency selector; monetary inputs are converted at an approximate rate. To use your own rate, enter the amounts directly.