Tons (water) to gallons (US liquid) conversion calculator shown above calculates how many gallons (US liquid) are in 'X' tons (water) (where 'X' is the number of tons (water) to convert to gallons (US liquid)). In order to convert a value from tons (water) to gallons (US liquid) type the number of tons (water) to be converted to gal and then click on the 'convert' button.