Free · Volume to weight converters

Gallons to Short Tons, Tonnes & Long Tons

Convert a liquid volume to mass using a selected density, with US liquid, imperial and dry gallons and three ton definitions.

  • Formula & worked example
  • Private in your browser
  • No signup
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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Private by default

Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.

Formula and method

For custom density 1,000 kg/m³, 453.59237 US liquid gallons have mass 1.892705892 US short tons. The mass changes with density and gallon definition.

Mass = density × volume; 1 US short ton = 2000 lb; 1 tonne = 1000 kg; 1 long ton = 2240 lb

Worked example

Enter these known values and leave the other values blank.

Liquid density preset or Custom
Custom density
Density of the contents
1000 kg/m³
Measured volume
453.59237 US gal
Contents mass and ton definition
1.8927 US ton

Assumptions and limitations

  • Density is positive and mass and volume are nonnegative. The output describes mass, not weight force or container mass.
  • Presets are fixed illustrative densities, with their numerical values shown in the choice labels. Real density depends on temperature, pressure and composition; use Custom for the applicable value.
  • A US short ton, metric tonne and imperial long ton have different masses. US liquid, US dry and imperial gallons also have different volumes.
  • Saltwater and Custom remain separate choices. Changing to Custom clears the preset density so an entered density can be used.

Common questions

Can I convert gallons to tons without density?

No. Gallons measure volume and tons measure mass. Their relationship depends on the material’s density.

Does one ton always mean 1,000 kg?

Only the metric tonne does. A US short ton is 2,000 avoirdupois pounds, while a long ton is 2,240 pounds.

References

Bookify requires nonnegative quantities in this volume/mass, dose-unit or land-area conversion. The US dry gallon uses one eighth of a 2150.42-cubic-inch bushel, replacing the rounded captured volume factor. Bookify replaces the captured rounded US gallon with the exact 3.785411784-liter definition. Bookify uses exact customary mass and volume definitions for density units, replacing rounded factors in the reference. Prices per thousand US gallons use the same exact gallon as the volume inputs.

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