how can you tell how much propane is in your tank?

Assuming this is a small container for a grill, which is actually a cylinder not a tank..The only ACCURATE way of telling how much propane is left in the container is to weigh it. On the collar of the cylinder will be a marking of TW## which is the weight of the cylinder in pounds with no propane in it. It might show T## in which case the cylinder is labeled in metric and the number refers to kilograms...

Weigh the cylinder and subtract the TW or T weight as applicable from that number. This is how much propane you have left.

Inline gauges are useless because they read pressure. Well the pressure in a propane tank changes with the temperature around it. So you could have anywhere from 0 PSI on a really cold day to 200PSI on an extremely hot day! An inline gauge will read close to full until the tank is almost empty and then the needle will drop like a stone in the last few minutes of burn time left in the tank. Dont waste your money!

The hot water thing works...sort of...You need to run the appliance first on high flame to get the liquid temperature inside the container to drop below the ambient air temperature enough to cause moisture in the air, if you are in an geographic area with enough humidity, to cause the tank to "sweat" and show where the liquid level is. You use gas to check the tank level and it is far from accurate. Weigh the Cylinder and you will know exactly where you are...

If this is a larger tank that is filled by a delivery truck, there will be a gauge under the dome cover that reads 85% when it is full and may still have fuel in it when it reads 0% These are not an accurate gauge, they just give an approximation. Use caution when checking under the dome cover on a tank. Wasps love to make nests under there, so knock on the hatch with a wrench or something to see if anyone is home before you flip it open!

Hope this helps!

1: every tank has a hydro date on it. As long as it is not expired or rusted it is OK to use. 2:I'm not to shure about this one just bring it back to where you bought it. 3: put the tank inside and wait for it to get to room temp for about 4 hours. Then set it outside on a warm day. there should be condensation outside of the tank. Depending how much propane you have in it depends on the amount of condensation. If the condensation is only on the bottom half and not on the top you tank is half full.

Most big tanks have a guage. If it doesn't, you can try tapping it with your knuckle...the less propane the more "hollow" and "echoey" it will sound.

If you're talking about the littel 5 gallon kind used on your bbq, I tell how full mine are buy picking them up to see how heavy they are...but if you aren't familiar with how much an empty vs. a full tank weighs, that isn't very helpful. I'm thinking an empty feels like about 25 lbs or so, a full one feels about 10 or so lbs heavier.

If in doubt, and you're having a bbq and don't want to run out of propane, just go get it filled, you're charged by how much gas you get and it's cheap anyway. It really sucks to run out of fuel while you're grilling!

Are you talking about the one for your house or your bar-b-que ?

The one for your house will have a guage on top telling you the percentage left. Example: 40 % of a 500 gal tank is approximately 200 gal. There's a tag welded to this tank giving you the tank statistics, this will include the volume.

If you're talking about a small one for your cooker or camper. It's usually done by weight. Some BBQ s will have a scale for the tank to hang on and this gives you a running amount. Most people can tell by lifting their tank if it feels empty ( just a matter of getting used to it from use) , but one sure fire way to tell if it's empty is when the flame goes out !!!

spray it with water the condesate line will show up!

There heavy when there full.