Gallons to PoundsA tool for the liquid in front of you
Start with the general converter for a choice of liquids and units, or open a focused calculator for water or diesel. Each one shows the density behind the answer.
Different liquids · Batch conversion
Convert volume to weight or weight to volume with liquid presets or your own density. Choose US or Imperial gallons and other units, then convert one amount or a batch of entries.
Best for comparing liquids, changing density units or processing several amounts.
Water · Empty-container weight
Find water weight using a listed temperature and density. Add an optional empty-container weight to see the water and combined total separately, with a chart of common volumes below the tool.
Best for a water quantity where the temperature or container weight matters.
Diesel · Product density
Convert diesel volume to pounds or pounds back to volume. Use a cited product density range at 15°C, or enter a density for your actual fuel. Supports US gallons, Imperial gallons and liters.
Best for fuel-only estimates with an explicit density reference.