Free shipping calculator
Demurrage and Detention Charge Calculator
Audit container free time and estimated charges using the dates, free days and rate tiers in your carrier tariff or contract. See elapsed, free and chargeable days separately.
Estimated time-based charges
USD 0
0 elapsed calendar days less 5 free days = 0 chargeable days. Tier 1: 0 days / USD 0; later tier: 0 days / USD 0; fixed charges USD 0.
Date-counting conventions differ by carrier, terminal, equipment event and jurisdiction. Confirm whether the start day is included, whether free time uses calendar or working days, and whether demurrage, detention and storage are billed separately before relying on this audit.
Recommended next step
Check dates and free time against the arrival notice before disputing charges.
Container Free Time and Chargeable Days
- Separate free and chargeable days
- Model tiered daily rates
- Audit a carrier invoice
- Document the date basis used
Demurrage and Detention Calculation Method
Elapsed calendar days are calculated from the selected start and end dates, free time is deducted, and remaining days are allocated through the entered rate tiers before fixed fees.
Contracts differ on inclusive dates, holidays, start events, combined free time and local rules. Confirm the governing tariff or service contract.
Demurrage Calculator FAQ
Is the Demurrage & Detention Calculator free to use?
Yes. The calculator is available without an account, and values entered into the form are calculated in the browser or by the tool endpoint required for the lookup.
How does the Demurrage & Detention Calculator work?
Elapsed calendar days are calculated from the selected start and end dates, free time is deducted, and remaining days are allocated through the entered rate tiers before fixed fees.
Can I use the result for a booking or invoice approval?
Use the result as a transparent working calculation and verify it against the governing carrier tariff, contract or operational requirement. Contracts differ on inclusive dates, holidays, start events, combined free time and local rules. Confirm the governing tariff or service contract.