How Many Pounds of Propane in a Gallon?

One gallon of propane weighs approximately 4.24 pounds at 60°F (15.6°C), which is the standard temperature for propane measurement.

1. Propane Weight by Gallon

📌 Tip: Propane expands with heat, so tanks are only filled to 80% capacity for safety.

2. How to Calculate Propane Weight

✔ Formula: Gallons × 4.24 = Total Propane Weight (lbs)
✔ Example: 10 gallons × 4.24 = 42.4 lbs of propane

📌 Tip: A full 20 lb propane tank actually holds about 4.7 gallons of propane.

3. Common FAQs

1. How much does a full 20 lb propane tank weigh?

✔ About 37–39 lbs (20 lbs of propane + empty tank weight).

2. How much does an empty propane tank weigh?

✔ A 20 lb tank weighs about 17–19 lbs when empty.

3. Does propane weigh the same in all temperatures?

⚠️ No, propane expands in heat, so its weight may vary slightly.

4. How many gallons are in a 100 lb propane tank?

✔ 100 lbs ÷ 4.24 = ~23.6 gallons.

5. Why are propane tanks only filled to 80%?

✔ To allow for expansion in hot weather and prevent overpressure.

Final Thoughts

One gallon of propane weighs 4.24 lbs, and propane tanks are only filled to 80% capacity for safety. Whether refilling or calculating usage, knowing the weight-to-gallon ratio helps in propane management and safe storage! 🔥✅

Also Check:

• How Many Gallons in a 60lb Propane Tank?

• How Many Gallons in a 15-Pound Propane Tank?

• How Much Does a Propane Refill Cost?

• How Much Is It to Fill a Propane Tank?

• How Many Hours of Grilling in a Propane Tank?