Liquid Weight Calculator – Interactive!

Use this calculator to determine the weight of common liquids in your RV and tow vehicle.

When starting with the vehicle’s unloaded weight, it is necessary to know the weight of liquids to estimate a gross tow vehicle weight (GVW) or trailer loaded weight.

* The results of this calculator are approximate. Results may be slightly inaccurate due to conversion and rounding. Weight of liquids vary slightly with temperature, altitude, chemical composition, etc.


As of January 8, 2024, this interactive RV calculator is temporarily suspended. We apologize for the inconvenience, and we hope to have the calculator back up and running soon. In the meantime, we recommend reading through the rest of the notes on this page, which may help clarify your understanding. Thank you for visiting Changing Gears. 

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