How to Read a Tank Gauge

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Reading your propane tank fuel gauge is not complicated, but can be confusing. First, you must locate the gauge by looking under the dome of your propane tank. There you will find black numbers surrounding the circumference of the gauge and a pointer needle indicating a percentage.

Based on the physical properties of propane, tanks are considered full when the gauge reads 80%. This allows for any expansion of propane vapor. If your gauge ever falls below 20%, you should contact ThompsonGas immediately at 855-965-5577 for a refill.

It is safest to refill your tank before the gauge falls below 20%. Listed below is a handy chart to help you understand how much propane is in your tank based on readings from the gauge.

200 pounds 420 pounds 500 Gallon 1000 Gallon
80 Percent 48 Gallons 99 Gallons 400 Gallons 800 Gallons
70 Percent 42 Gallons 87 Gallons 350 Gallons 700 Gallons
60 Percent 36 Gallons 74 Gallons 300 Gallons 600 Gallons
50 Percent 30 Gallons 62 Gallons 250 Gallons 500 Gallons
40 Percent 24 Gallons 50 Gallons 200 Gallons 400 Gallons
30 Percent 18 Gallons 37 Gallons 150 Gallons 300 Gallons
20 Percent 12 Gallons 25 Gallons 100 Gallons 200 Gallons
10 Percent 6 Gallons 12 Gallons 50 Gallons 100 Gallons

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