How Long Does Propane Last on Blackstone Griddle?

So you just got a new Blackstone Griddle. You might have an old propane bottle at home. And you’re wondering if it will last long enough on the Blackstone griddle.


How long does propane last on Blackstone griddle?

The duration depends on a few factors. First of all, you’ll need to know about the BTU rating. The duration also depends on the size of the griddle you have. Also, it depends if you put the heat high all time or not. 

Is this what you’re looking for? Then this article will lead you through all these factors broadly. By the end, you’ll gain the knowledge of how long it should last.

So let’s not waste time anymore and get this started.

BTU Rating

BTU stands for British Thermal Unit, and you’ve probably heard of it. It’s on everything that produces heat. From a hairdryer to a furnace and everything in between. Griddles and grills are no exception.

The amount of heat emitted by a product is measured in BTUs. And the result is recorded in a BTU rating. Of course, you won’t cook your briskets looking at the BTU value. 

Bottle Size and Propane BTU Rating

Propane bottles are measured in both weight and BTUs. The weight of propane is measured in pounds. The BTU rating of a normal 20lb propane tank is 432,804 BTUs. You may calculate your use by multiplying the total BTUs of propane by the griddle’s per-hour BTU rating.

On the 60,000/ hour BTU rating of a Blackstone 36, a regular 20lb propane tank would last around 7.2 hours.

Griddle Size and BTU Rating

Let’s say a 1 lb Propane bottle has 21,594 BTUs as a reference. The BTUs in a 5-pound bottle of propane are 109,800. A 20-pound bottle of propane has 432,804 BTUs. Based on this, let’s see how a good griddle size can affect the lasting of the propane.

Blackstone 17 Adventure

The Blackstone 17-inch Tabletop Griddle is ideal for a small gathering or on the run. You can simply prepare nine hamburgers with our Adventure-ready device.

The BTU rating of Blackstone 17 Adventure is 12,000 BTU. For 1lb Propane, it lasts 1.79 hours. For 5lb propane, it lasts 9.15 hours. For 20lb propane, it lasts 36.06 hours.

Blackstone 22 Tabletop

With the Blackstone 22″ tabletop griddle, you can make your outdoor trips a tasty affair. The BTU rating of the Blackstone 22 Tabletop is 24,000 BTU. 

This portable griddle comes with everything you’ll need to make a feast. It lasts .89 hours for 1 lb of propane. For 5 lb propane, it lasts 4.57 hours. For 20 lb propane, it lasts 18.03 hours.

Blackstone 28 Griddle

The BTU rating of Blackstone 28 Griddle is 34,000 BTU. The Blackstone 28″ Griddle Cooking Station will care for you and your family. For 1lb propane, it lasts for .63 hours. It lasts 4.57 hours for 5lb propane. And for 20 lb propane, it can last up to 12.72 hours.

Blackstone 36 Griddle

If you want to cook frozen beef stroganoff, the Blackstone 36 is a great choice. The BTU rating of Blackstone 36 Griddle is 60,000 BTU. For 1lb propane, it lasts .36 hours. It lasts for about 1.83 hours for 5 lb propane. And for 20 lb propane, it lasts for around 7.21 hours.

Blackstone 17 Air Fryer Combo

The Blackstone 17 Air Fryer Combo has a BTU rating of 12,500. The Blackstone Air Fryer Griddle Combo is incompatible with the Blackstone Natural Gas Conversion Kit. It also doesn’t work with the Culinary series.

If you need a conversion kit, we have picked some for you. So have a look-

Product 1
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These products have very high functionality and outstanding customer reviews. 

The Blackstone 17 Air Fryer Combo can last up to 1.72 hours for 1lb propane. The time duration becomes 8.78 hours for 5 lb propane. And for 20 lb propane, it can last up to 34.62 hours.

Blackstone 17 W / Side Burner

The Blackstone 17 w and side burner combined have a BTU rating of 24,000. It can last 0.89 hours for 1lb of propane. For 5 lb propane, it can last around 4.57 hours. And for 20 lb propane, it can last up to 18.03 hours.

Blackstone Tailgater Combo

The Blackstone Tailgater Combo has a combined BTU rating of 35,000. It is the highest of all that we’ve mentioned. For 1lb propane, it lasts around 0.61 hours. It lasts 3.13 hours for 5 lb propane. And for 20 lb propane, it lasts up to 12.36 hours.

There you go. That’s how the Griddle size and BTU rating affect the propane to last. But these stats are not exact. Since it is uncertain if your burners are always set at the highest point. So this is just approximate. Also, never forget to season your griddles. You can use laxative oil, grape seed oil, or any other edible oil.

Frequently Asked Questions

Is it possible to convert a Blackstone grill to natural gas?

Yes! Blackstone has considered this. Blackstone 28′′ Griddles, 36′′ Griddles, Tailgater, Rangetop Combo, and single Burner Rec Stove are all compatible with the natural gas conversion kit.

What cooking oil is best for a Blackstone griddle?

Some people believe that grape seed oil is the best for this. But you should pick a high-quality cooking oil with a decent flavor and a high smoke point.

Is seasoning my griddle necessary?

Yes, seasoning is necessary. Seasoning your griddle is just as crucial as having enough gas for it. Your food will be tasteless if you don’t have just one.


We hope you understand how long propane lasts on the Blackstone griddle. 

One last tip, consider not purchasing the little green 1-pound camping bottles any longer. It’s hard to get rid of them. They can’t just be thrown away. They must be properly disposed of.

All the best!