Answer: Propane can be measured in a few manners. The most common way is by gallons. It can also be measured by pounds (one gallon = 4.2lbs). When measured in gallons, a meter at the pump is used to determine the amount of propane that has been filled into a tank.

## How many gallons are in a 100 lb propane tank?

Propane weighs 4.24 lbs per gallon. So a 100 lb propane tank holds **23.6 gallons**. 11 of 16 found this helpful.

## How do I know how many gallons my propane tank is?

To determine how much gas is in your propane tank, **multiply the outage reading by the capacity of the tank**. For example: A 500 gallon propane tank at 40% = 500 x 0.4 = 200 gallons remaining in the tank. These figures are approximate and can only be used to determine estimated gallons in the tank.

## How much propane is in a 20 lb tank?

20 lb Propane Tank

20 pound propane tanks are often referred to as grill cylinders and hold **4.6 gallons** of propane when full.

## How long will a 100 gallon propane last?

A 100-pound propane tank holds 23.6 pounds of propane when it’s full. If your fireplace is 20,000 BTU and you use it 12 hours a day, the 100-gallon propane tank will last you **around nine days**.

## Is owning your own propane tank worth it?

The Pros and Cons of Purchasing a Propane Tank

You can secure the least expensive fuel if you shop around in an area with options. But purchasing your own propane tank **comes with all the trappings of ownership**. You’re on the hook for maintenance and repairs, which can be significant over the lifespan of a tank.

## How much does it cost to fill up a 500 gallon propane tank?

Cost To Fill

You can expect to pay an **average of $600, or even more**, to fill your 500 gallon propane tank. The total cost can vary based on the market price of propane at any given time. Many homeowners realize that this cost is worth it as a 500 gallon tank is enough to power all home appliances.

## Can you fill a 20 lb propane tank from a 100 lb propane tank?

– Yes, if you set the 20lb on the ground and **the 100lb upright it will partially refill the smaller tank**. You’ll never get the smaller tanks all the way full though, and you’ll never get the 100lb totally empty. A new full 20lb tank costs about $40.00 around here, and a full 100lb tank is around $160.00.

## How long will a 20 lb propane tank last at 50000 BTU?

At a high level, (21,600×20)= 432,000 BTUs capacity in a full tank. 432,000/50,000 = **8.64 hours**.

## Can I use a 15 lb propane tank instead of 20?

Major point: **Exchange services under fill the tanks** to only 15 lbs. rather than the about 20 lbs that they will safely hold. Refilling gives you the full capacity. It used to be that taking your gas barbeque’s propane tank to a local refilling station was the only option.