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To figure this out, check the specifications for your grill. It should report the output of each burner in BTU (British Thermal Units) or kWh (kilowatt hours). One pound of propane contains 21500 BTU (around 6.3 kWh).

An average grill might have burners with individual output of around 30000 BTU at full output. Therefore 1 lb of propane will, in theory, last for around (21500 / 30000) * 60 = around 43 minutes. The real time is probably somewhat less than this. If you run it at half output (good for a few sausages) it should last somewhat more than an hour.

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โˆ™ 15y ago
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โˆ™ 11y ago

There is no correct answer for this.

Grills come in very different sizes and thus will use different amounts of LPG per use.

Also for technical reasons regarding how propane tanks work a single 20 LB tank will not supply many large grills.

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Q: How long will a 1 lb propane gas grill tank last?
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