Dump + Propane Calculator
Two quick calculators for real RV life: one to estimate when you’ll need to dump, and one to estimate how long your propane will last. These are planning tools — close enough to be useful, and honest enough to keep you from guessing.
Tank Preset + Units
Tip: if you don’t know your tank sizes, check the RV spec sheet or the tank labels.
Tank Sizes
Grey usually fills first. Black tends to surprise you later… usually when you least want to deal with it.
Daily Use Assumptions
Advanced (override the assumptions)
If you override values, use the same unit system you selected above.
Quick Links
Want to keep tanks from turning into a science experiment?
If you’re new to dumping: gloves, a clear elbow, and a dedicated “sewer bin” are not optional. Ask me how I know.
Tank Setup + Units
Numbers assume typical usable fill and typical appliance draw. Furnace usage is the big swing factor.
Appliance Use
Quick Links
If you want the deeper breakdown, it’s here:
Quick safety habit: keep a spare propane regulator on hand. They fail at the worst times — usually when it’s cold and you’re already cranky.
Optional: Your Price per Gallon
If you add a price, the tool will estimate your “remaining value” in the tank and what a refill might feel like.
Last updated: January 2026
