# Demurrage Calculator — Free demurrage and detention calculator > Calculate tiered demurrage for the days a container stays at the terminal beyond free time. - URL: https://demo.fcrsoft.com/en/container/demurrage-calculator - Language: en - Updated: 2026-10-03 - Publisher: FCRSOFT (https://fcrsoft.com) [Demos](https://demo.fcrsoft.com/?hl=en) / [Free Tools](https://demo.fcrsoft.com/en/tools) / [Container Calculators](https://demo.fcrsoft.com/en/container) / Demurrage Calculator Free tool # Demurrage Calculator Calculate tiered demurrage for the days a container stays at the terminal beyond free time. No sign-up needed; results update as you type. [See the system that does this automatically Open the live demo](https://demo.fcrsoft.com/login.php?package=freight) ## Calculator Currency Days at terminal : 14 days Free days : 5 days Number of containers : 2 pcs Tier 1 days : 4 days Tier 1 daily rate : 75 USD Tier 2 days : 5 days Tier 2 daily rate : 150 USD Daily rate thereafter : 250 USD This calculator runs in your browser; the data you enter is not stored. ## Results Chargeable days 9 days Demurrage per container 1,050 USD Total demurrage 2,100 USD Average daily cost 116.67 USD **Act Before Demurrage and Detention Invoices Arrive**Result: **2,100 USD**. FCRSOFT counts each container’s free time and warns you before charges start. [Open the live demo](https://demo.fcrsoft.com/login.php?package=freight) [Request a demo](https://fcrsoft.com/en/contact/) ## Demurrage Calculator: what you need to know Demurrage is charged when a full container stays in the terminal beyond free time, usually at daily rates that start low and step up. A customs delay or missing document can cost close to the freight amount within days. **Expert tip:** Free time usually starts on the discharge day; knowing the last free day before the vessel arrives and preparing customs documents in advance is the most effective way to avoid demurrage. ## Demurrage Calculator: worked example Example values: Days at terminal 14 days, Free days 5 days, Number of containers 2 pcs, Tier 1 days 4 days, Tier 1 daily rate 75 USD, Tier 2 days 5 days, Tier 2 daily rate 150 USD, Daily rate thereafter 250 USD. With these values the results are: | Chargeable days | 9 days | | Demurrage per container | 1,050 USD | | Total demurrage | 2,100 USD | | Average daily cost | 116.67 USD | ### How to use: Demurrage Calculator - Enter your own values: Days at terminal, Free days, Number of containers, Tier 1 days, Tier 1 daily rate, Tier 2 days, Tier 2 daily rate, Daily rate thereafter. - Choose the currency; money inputs are converted at an approximate rate. - Results are calculated as you type: Chargeable days, Demurrage per container, Total demurrage, Average daily cost. - Check every step of the calculation in the formulas below. ## How is it calculated? - **Chargeable days** = max(0; [Days at terminal] − [Free days]) - **Demurrage per container** = min([Chargeable days]; [Tier 1 days]) × [Tier 1 daily rate] + min(max([Chargeable days] − [Tier 1 days]; 0); [Tier 2 days]) × [Tier 2 daily rate] + max([Chargeable days] − [Tier 1 days] − [Tier 2 days]; 0) × [Daily rate thereafter] - **Total demurrage** = [Demurrage per container] × [Number of containers] - **Average daily cost** = if([Chargeable days] > 0; [Demurrage per container] ÷ [Chargeable days]; 0) ## Other tools running on Container Time Engine Calculates free time, demurrage, detention and storage tiers by number of days. - [Detention Calculator](https://demo.fcrsoft.com/en/container/detention-calculator) - [Demurrage + Detention Calculator](https://demo.fcrsoft.com/en/container/demurrage-and-detention-calculator) - [Free Time Calculator](https://demo.fcrsoft.com/en/container/free-time-calculator) - [Demurrage Tier Calculator](https://demo.fcrsoft.com/en/container/demurrage-tier-calculator) - [Container Storage Cost](https://demo.fcrsoft.com/en/container/container-storage-cost) - [Terminal Storage Calculator](https://demo.fcrsoft.com/en/container/terminal-storage-calculator) - [Port Storage Calculator](https://demo.fcrsoft.com/en/container/port-storage-calculator) - [Container Pickup Cost](https://demo.fcrsoft.com/en/container/container-pickup-cost) - [Container Return Cost](https://demo.fcrsoft.com/en/container/container-return-cost) - [Container Delay Cost](https://demo.fcrsoft.com/en/container/container-delay-cost) - [Container Total Cost](https://demo.fcrsoft.com/en/container/container-total-cost) - [Demurrage or Detention?](https://demo.fcrsoft.com/en/container/demurrage-vs-detention) 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. - Each container’s free time is counted from discharge. - You are warned before the last free day. - Any demurrage and detention incurred is posted to the file cost. [Open the live demo](https://demo.fcrsoft.com/login.php?package=freight) [Explore the Freight & Container package](https://demo.fcrsoft.com/demo/freight?hl=en) [demo.fcrsoft.com](https://demo.fcrsoft.com/login.php?package=freight) ## Frequently asked questions How is Demurrage Calculator calculated? Calculate tiered demurrage for the days a container stays at the terminal beyond free time. The calculation uses Container Time Engine: Calculates free time, demurrage, detention and storage tiers by number of days. Demurrage Calculator: what is it and when is it used? Demurrage is charged when a full container stays in the terminal beyond free time, usually at daily rates that start low and step up. A customs delay or missing document can cost close to the freight amount within days. Demurrage Calculator: what should I watch out for? Free time usually starts on the discharge day; knowing the last free day before the vessel arrives and preparing customs documents in advance is the most effective way to avoid demurrage. How is Total demurrage found? Total demurrage = [Demurrage per container] × [Number of containers]. With the example values (Days at terminal 14 days, Free days 5 days, Number of containers 2 pcs, Tier 1 days 4 days, Tier 1 daily rate 75 USD, Tier 2 days 5 days) the result is 2,100 USD. Worked example: Demurrage Calculator Example values: Days at terminal 14 days, Free days 5 days, Number of containers 2 pcs, Tier 1 days 4 days, Tier 1 daily rate 75 USD, Tier 2 days 5 days. Chargeable days: 9 days; Demurrage per container: 1,050 USD; Total demurrage: 2,100 USD; Average daily cost: 116.67 USD. Is Demurrage 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 counts each container’s free time and warns you before charges start. You can try the Freight & Container 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. ## Related tools and guides [Free tool ### Detention Calculator Calculate detention for days a container is kept outside the terminal (from full gate-out to empty return) beyond free time. Open the tool](https://demo.fcrsoft.com/en/container/detention-calculator) [Free tool ### Demurrage + Detention Calculator Calculate the same container’s terminal (demurrage) and outside-terminal (detention) charges together, each with its own free time. Open the tool](https://demo.fcrsoft.com/en/container/demurrage-and-detention-calculator) [Free tool ### Demurrage Tier Calculator Split chargeable days into tiers and see the days and amount of each tier separately. Open the tool](https://demo.fcrsoft.com/en/container/demurrage-tier-calculator) [Free tool ### Free Time Date Calculator Find the last free terminal day and the empty return deadline from discharge and gate-out dates. Open the tool](https://demo.fcrsoft.com/en/container/free-time-date-calculator)