# DWT Utilization — Free vessel calculator > Calculate loaded cargo as a share of DWT and net cargo capacity, the unused capacity and the freight lost. - URL: https://demo.fcrsoft.com/en/maritime/dwt-utilization-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) / [Maritime Calculators](https://demo.fcrsoft.com/en/maritime) / DWT Utilization Free tool # DWT Utilization Calculate loaded cargo as a share of DWT and net cargo capacity, the unused capacity and the freight lost. 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=fleet) ## Calculator Currency Summer DWT : 58000 t Fuel, fresh water, stores and constant : 2400 t Cargo loaded : 50500 t Freight per ton : 22 USD This calculator runs in your browser; the data you enter is not stored. ## Results DWT utilization 91.2 % Net cargo capacity utilization 90.8 % Freight value of unused capacity 112,200 USD **Keep Your Fleet and Vessel Data in One Place**Result: **91.2 %**. FCRSOFT stores DWT, TPC and draft data on vessel cards and uses it automatically in voyage estimates. [Open the live demo](https://demo.fcrsoft.com/login.php?package=fleet) [Request a demo](https://fcrsoft.com/en/contact/) ## DWT Utilization: worked example Example values: Summer DWT 58,000 t, Fuel, fresh water, stores and constant 2,400 t, Cargo loaded 50,500 t, Freight per ton 22 USD. With these values the results are: | DWT utilization | 91.2 % | | Net cargo capacity utilization | 90.8 % | | Freight value of unused capacity | 112,200 USD | ### How to use: DWT Utilization - Enter your own values: Summer DWT, Fuel, fresh water, stores and constant, Cargo loaded, Freight per ton. - Choose the currency; money inputs are converted at an approximate rate. - Results are calculated as you type: DWT utilization, Net cargo capacity utilization, Freight value of unused capacity. - Check every step of the calculation in the formulas below. ## How is it calculated? - **DWT utilization** = ([Cargo loaded] + [Fuel, fresh water, stores and constant]) ÷ [Summer DWT] × 100 - **Net cargo capacity utilization** = [Cargo loaded] ÷ ([Summer DWT] − [Fuel, fresh water, stores and constant]) × 100 - **Freight value of unused capacity** = max(0; [Summer DWT] − [Fuel, fresh water, stores and constant] − [Cargo loaded]) × [Freight per ton] Ship calculations are estimates based on standard formulas. Loading, stability and draft decisions must be based on the ship’s approved documents and loading computer. ## Other tools running on Vessel Hydrostatics Engine Calculates DWT, displacement, draft, trim, TPC and MCT relationships with standard naval formulas; results must be checked against approved vessel data. - [DWT Calculator](https://demo.fcrsoft.com/en/maritime/dwt-calculator) - [Displacement Calculator](https://demo.fcrsoft.com/en/maritime/displacement-calculator) - [Lightship Weight Calculator](https://demo.fcrsoft.com/en/maritime/lightship-weight-calculator) - [Cargo Capacity Calculator](https://demo.fcrsoft.com/en/maritime/cargo-capacity-calculator) - [Cargo Intake Calculator](https://demo.fcrsoft.com/en/maritime/cargo-intake-calculator) - [Draft Calculator](https://demo.fcrsoft.com/en/maritime/draft-calculator) - [Mean Draft Calculator](https://demo.fcrsoft.com/en/maritime/mean-draft-calculator) - [Forward / Aft Draft Calculator](https://demo.fcrsoft.com/en/maritime/forward-aft-draft-calculator) - [Trim Calculator](https://demo.fcrsoft.com/en/maritime/trim-calculator) - [Trim by Stern (Loading Effect)](https://demo.fcrsoft.com/en/maritime/trim-by-stern-calculator) - [Freeboard Calculator](https://demo.fcrsoft.com/en/maritime/freeboard-calculator) - [TPC Calculator](https://demo.fcrsoft.com/en/maritime/tpc-calculator) 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. - DWT, TPC, draft and capacity data are stored on vessel cards. - Certificate and document expiry dates are tracked, with warnings before they lapse. - Voyage estimates use vessel data automatically. [Open the live demo](https://demo.fcrsoft.com/login.php?package=fleet) [Explore the Fleet & Vessel package](https://demo.fcrsoft.com/demo/fleet?hl=en) [demo.fcrsoft.com](https://demo.fcrsoft.com/login.php?package=fleet) ## Frequently asked questions How is DWT Utilization calculated? Calculate loaded cargo as a share of DWT and net cargo capacity, the unused capacity and the freight lost. The calculation uses Vessel Hydrostatics Engine: Calculates DWT, displacement, draft, trim, TPC and MCT relationships with standard naval formulas; results must be checked against approved vessel data. How is Freight value of unused capacity found? Freight value of unused capacity = max(0; [Summer DWT] − [Fuel, fresh water, stores and constant] − [Cargo loaded]) × [Freight per ton]. With the example values (Summer DWT 58,000 t, Fuel, fresh water, stores and constant 2,400 t, Cargo loaded 50,500 t, Freight per ton 22 USD) the result is 112,200 USD. Worked example: DWT Utilization Example values: Summer DWT 58,000 t, Fuel, fresh water, stores and constant 2,400 t, Cargo loaded 50,500 t, Freight per ton 22 USD. DWT utilization: 91.2 %; Net cargo capacity utilization: 90.8 %; Freight value of unused capacity: 112,200 USD. Is DWT Utilization 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 stores DWT, TPC and draft data on vessel cards and uses it automatically in voyage estimates. You can try the Fleet & Vessel package in the live demo without installing anything. Do the results replace official ship calculations? No. Ship calculations are estimates based on standard formulas. Loading, stability and draft decisions must be based on the ship’s approved documents and loading computer. 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 ### Cargo Capacity Calculator Deduct fuel, fresh water, stores, residual ballast and constant from DWT to calculate the net cargo you can carry. Open the tool](https://demo.fcrsoft.com/en/maritime/cargo-capacity-calculator) [Free tool ### Vessel Utilization Calculate cargo capacity utilization and annual time utilization (laden, ballast, port and idle days). Open the tool](https://demo.fcrsoft.com/en/maritime/vessel-utilization) [Guide ### What Is DWT (Deadweight)? The relationship between DWT, displacement, lightship weight, draft, TPC and cargo capacity — how to calculate how many tons of cargo a ship can really take. Read the guide](https://demo.fcrsoft.com/en/maritime/what-is-dwt)