# Free Time Calculator — Free demurrage and detention calculator > Calculate the free days left since discharge and whether you have entered chargeable days. - URL: https://demo.fcrsoft.com/en/container/free-time-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) / Free Time Calculator Free tool # Free Time Calculator Calculate the free days left since discharge and whether you have entered chargeable days. 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 Discharge date : 2026-09-30 Free days : 7 days Calculation date : 2026-10-06 This calculator runs in your browser; the data you enter is not stored. ## Results Last free day 10/6/2026 Days used 7 days Free days left 0 days Chargeable days 0 days **Act Before Demurrage and Detention Invoices Arrive**Result: **10/6/2026**. 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/) ## Free Time Calculator: worked example Example values: Discharge date 9/30/2026, Free days 7 days, Calculation date 10/6/2026. With these values the results are: | Last free day | 10/6/2026 | | Days used | 7 days | | Free days left | 0 days | | Chargeable days | 0 days | ### How to use: Free Time Calculator - Enter your own values: Discharge date, Free days, Calculation date. - Choose the currency; money inputs are converted at an approximate rate. - Results are calculated as you type: Last free day, Days used, Free days left, Chargeable days. - Check every step of the calculation in the formulas below. ## How is it calculated? - **Last free day** = [Discharge date] + [Free days] − 1 - **Days used** = [Calculation date] − [Discharge date] + 1 - **Free days left** = max(0; [Free days] − [Days used]) - **Chargeable days** = max(0; [Days used] − [Free days]) ## Other tools running on Container Time Engine Calculates free time, demurrage, detention and storage tiers by number of days. - [Demurrage Calculator](https://demo.fcrsoft.com/en/container/demurrage-calculator) - [Detention Calculator](https://demo.fcrsoft.com/en/container/detention-calculator) - [Demurrage + Detention Calculator](https://demo.fcrsoft.com/en/container/demurrage-and-detention-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 Free Time Calculator calculated? Calculate the free days left since discharge and whether you have entered chargeable days. The calculation uses Container Time Engine: Calculates free time, demurrage, detention and storage tiers by number of days. How is Last free day found? Last free day = [Discharge date] + [Free days] − 1. With the example values (Discharge date 9/30/2026, Free days 7 days, Calculation date 10/6/2026) the result is 10/6/2026. How is Free days left found? Free days left = max(0; [Free days] − [Days used]). With the example values (Discharge date 9/30/2026, Free days 7 days, Calculation date 10/6/2026) the result is 0 days. Worked example: Free Time Calculator Example values: Discharge date 9/30/2026, Free days 7 days, Calculation date 10/6/2026. Last free day: 10/6/2026; Days used: 7 days; Free days left: 0 days; Chargeable days: 0 days. Is Free Time 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 ### 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) [Free tool ### Demurrage Calculator Calculate tiered demurrage for the days a container stays at the terminal beyond free time. Open the tool](https://demo.fcrsoft.com/en/container/demurrage-calculator) [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) [Guide ### What Are Demurrage and Detention? The difference between container demurrage and detention, free time, tiered daily rates and ways to reduce delay costs. Read the guide](https://demo.fcrsoft.com/en/container/demurrage-and-detention-explained)