How Much Propane is Left in the Tank VIDEO

How much propane is left in the tank? If you grill with gas this a question you will have often. There is an easy way to measure how much gas is left in the tank. The most accurate way to gauge a 20lb propane tank is by weight so you will need a bathroom scale for this.

The first thing you will need to do is to turn the gas off and disconnect the hose from the grill and remove the tank.

Then we will need to find out the empty weight of your propane tank. That is stamped on the top ring of the tank. You will be looking for a TW and a number from 16 to 18 that will be the empty weight of the tank in pounds, pictured above.

Since a full tank holds 20 pounds of propane add that TW number to 20. In this case 20+18=38 so this tank will weigh 38 pounds when full (Note: if you have used a propane exchange they consider a 15 pounds a full tank).

Keep in mind that you will not get that last couple of pounds of gas to heat your grill. In fact when you get down to the 5 or 6 pound range your grill will not get as hot as it normally would. This should be your first sign that you need to change your tank it is also when an inline propane tank gauge needle would begin to move off of full.

Now we take the tank and place it on your bathroom scale subtract the empty weight and that is approximately how much gas you have left. We do sell a couple of propane tank scales specifically made for gas grills that will mount under your grill eliminating the need to remove the tank.

Here is a link to our article on how long your propane tank should last.

We do sell a grilling gadget that does exactly the same thing without removing the tank from your grill.

20lb Digital Propane Tank Scale Removable DisplayI

$39.99 $18.99

Removable digital display

Out of stock

SKU: TVL214 Category:


Never worry about running out of propane with the 20 pound digital propane tank scale with removable display. Weight is the most accurate way to read the amount of propane in your tank. The removable display shows the percentage of gas and the cook time remaining based on the current weight of the propane tank. The digital propane tank scale also includes a low-level alarm that sounds when the tank weight is at 20%, 15%, and 10%. Since the propane tank sits on the digital propane tank scale there is no connection to the propane tank so there is no chance of a leak. Unlike those inline propane tank gauges that have two connections to worry about.

The digital propane tank scale sits inside the grilling cabinet with the display placed outside.


The scale base is meant to be low profile enough to fit under your grill but be sure to measure. Allow for an extra 4 inches of clearance for your tank. If your grill has a hole that the lower ring of the tank sits into (as most newer low-end grills do) you will need to take that into account as well as your tank will no longer drop into it.

The digital display is removable from the base of the digital propane tank scale, so when grill is not in use you can bring the display inside. Perfect for cold weather climates where the LCD may freeze and crack if left outdoors.

Digital LCD Screen Displays the remaining grilling time in minutes and displays the percentage of gas remaining Low level alarm at 20%, 15% and 10% Safe connection no chance of leaks Easy To Setup, Easy To Read, No Tools Required Accurate, Safe & User friendly

The 20lb Digitial Propane Tank Scale with Removable Display is GasWatch item number TVL 214 is ideal for use with gas grills, patio heaters, smokers, and other outdoor propane appliances. The digital display is can be removed from the base of the scale.

Additional information

Weight 3.5 lbs


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About the author: Mike is the owner of, a Certified Food Safety Professional and KCBS member.

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