How Much Does A Gas Grill Propane Tank Weigh

How Much Does A Gas Grill Propane Tank Weigh

How Much Does A Gas Grill Propane Tank Weigh? The weight of a gallon of propane is 4.2 pounds. A “full” 20-pound propane cylinder should hold 4.7 gallons of propane. Gallons are the most prevalent unit of measurement. You can also express it in pounds (one gallon equals 4.2 pounds). Use a meter at the pump to determine the quantity of propane that has been put into a tank when measured in gallons. You must determine the tare (empty beginning) weight of the tank before you can measure it in pounds.

Professionals would advocate having your propane tank filled by a local provider over a tank exchange at a gas station or large box shop in terms of getting the most bang for your buck. The major businesses frequently use only 15 pounds of propane in their BBQ tanks. This implies you’ll only get 3.5 gallons of propane (15 pounds of propane Equals 3.5 gallons of propane). Normally, your propane tank is filled with 20 lbs of propane (4.7 gallons) from your local garden shop or gas marketer.

During summer time it is an ideal opportunity to break out the barbecue, give it a careful cleaning, slap a few patties on it, and have your first lawn picnic of the year. But, how do you check the propane level of a gas grill? Most propane tanks don’t go with a measure to tell you how much fuel is remaining. Also, you most likely don’t have any desire to run out and need to make an excursion to the store while you are busy cooking.

Tare Weight of A Gas Grill Propane Tank Weigh

The “tare weight” or “T.W.” is stamped on the collar of every propane tank. Calculate the tare weight + 20 lbs for a grill-sized tank, and that’s how much the tank should weigh when it’s filled. When empty, most 20 pound tanks have a tare weight of +/- 17 pounds. A propane tank that is “full” should weigh around 37 pounds.

The collar also has a month and year, showing when the tank was constructed. For 20-pound propane tanks, you have 12 years from the date of manufacture to re-certify the tank with a new date stamped on it. Re-certification simply adds five years to the time between re-certifications. New propane tanks may contain air and need to be “purged” before being filled for the first time. Some newer tanks, such as Bernzomatic’s, will have a tag stating that they do not need to be purged within six months of purchase.

Purging necessitates using a particular adaptor that allows a limited quantity of propane to enter. A one-way bleeder valve is then pushed open by the pressure. Purging a new tank can cost an extra $3-4 dollars; however, some businesses don’t charge for it, especially if you buy the tank from them. The weight of a gallon of propane is 4.2 pounds. A “full” 20-pound propane cylinder should hold 4.7 gallons of propane.

Temperature And Surrounding Of A Gas Grill Propane Tank Weigh

These “20-pound” tanks can hold up to 20 pounds of propane. Depending on the tank’s temperature and surrounding air when you fill it, you may get a pound or two less—more propane in when it’s cooler, less when it’s hotter. Tanks can hold an additional 20% water, but that extra room is meant to expand as the temperature rises.

Filling a tank to the full 20-pound capacity may be more of a concern/rule in particularly cold winter areas, such as Canada. This is only because if you leave a tank outside in bitterly cold temperatures, fill it when it’s cold, and then move it into a heated basement/garage to use as a space heater, and the gas will expand as it warms. The pressure relief setting in the tank will release a small amount of gas if the temperature rises sufficiently. If the relief value flows to the outside air, this is less of a concern.

What Method Do You Use To Read The Propane Gauge

Because there is no gauge on certain tiny gas cylinders (such as the 20-pound tank for your grill), the easiest approach to assess how much gas is left is simply weighing it. The water capacity (“WC”) and “Tare Weight” are both imprinted on the handle of most propane grill tanks. When empty, most grilling tanks weigh around 17 pounds and carry roughly 20 pounds of propane; to find out how much propane is remaining in your tank, weigh it on a scale and remove the TW number.

For example, if a 27-pound tank has a TW of 17 pounds, roughly 10 pounds of gas remaining — little over half a tank.

Larger tanks (100+ gallons) frequently contain a gasoline gauge, making things easier (often located under the tank dome or cover). The numbers on the gauge show the proportion of the full tank. Most gauges have a range of 0 to 90 percent (see why 90 percent and not 100 percent below). A gauge value often indicates that the tank is 10% filled (almost empty).

ome may wonder what the big problem is because the difference is only 1.2 gallons. However, 1.2 gallons of propane means around four to five hours of more cooking time for grilling. I could show you the math, but it would be boring, even Steven Hawking.

Furthermore, the cost of a tank at one of these swaps is generally $20-22. Many local propane marketers offer tank swap rates throughout the summer months if you hunt around. The price of a bottle exchange usually ranges from $12 to $15.

The per-gallon comparison is as follows:

A $22 tank swap at a Big Box Store equals $6.28 per gallon of propane.

For $12, you get $2.55 per gallon of propane from a local fill station.


When propane is heated, it expands similarly to water. However, with the same temperature rise, propane expands to nearly 17 times the amount of water! This enlargement is possible because of the greater space in the tank. Because the earth insulates the tank from large temperature changes, above-ground propane tanks are normally filled to around 80% full; in-ground tanks can be loaded somewhat higher. Our skilled drivers employ a set liquid level monitor to ensure that we don’t overfill — a simple but vital safeguard we take to ensure that every delivery to your house goes well.


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