RV Propane Calculator
Check the appliances you're running and enter hours per day for each.
RV Appliance Propane Consumption
Typical BTU ratings and estimated daily propane usage.
| Appliance | BTU/hour | Typical Hours/Day | Gallons/Day | Cost/Day ($3.50) |
|---|---|---|---|---|
| Furnace | 30,000 | 8 | 2.62 | $9.18 |
| Furnace (small) | 20,000 | 8 | 1.75 | $6.12 |
| Water Heater (6 gal) | 12,000 | 2 | 0.26 | $0.92 |
| Water Heater (10 gal) | 16,000 | 2 | 0.35 | $1.22 |
| Stove Burner | 9,000 | 1 | 0.10 | $0.34 |
| Oven | 12,000 | 0.5 | 0.07 | $0.23 |
| Fridge (propane) | 1,500 | 24 | 0.39 | $1.37 |
| Catalytic Heater | 6,000 | 8 | 0.52 | $1.83 |
| Propane Generator | 60,000 | 4 | 2.62 | $9.18 |
| All (moderate use) | — | — | ~3.4 | ~$11.80 |
How We Calculate This
This rv propane calculator uses established formulas and industry-standard data to provide accurate estimates.
- Enter your specific values into the calculator fields above
- Our algorithm applies the relevant formulas using your inputs
- Results are calculated instantly in your browser — nothing is sent to a server
- Review the detailed breakdown to understand how each factor affects your result
These calculations are estimates based on standard formulas. For critical decisions, always consult a qualified professional.
How to Convert Oven Recipes to Air Fryer
RV propane consumption depends on which appliances are running and for how long. Each appliance has a BTU rating that determines its fuel draw.
The basic rule:
- Each appliance consumes propane based on its BTU/hour rating
- Propane contains 91,500 BTU per gallon
- Daily gallons = total BTU/hour × hours / 91,500 BTU per gallon
The furnace is typically the biggest propane consumer in cold weather. Running on electric hookups when available saves significant propane. Consider a catalytic heater as a more efficient alternative to the furnace.
When Would You Use This Calculator?
This rv propane calculator is designed for anyone who needs quick, reliable estimates without complex spreadsheets or professional consultations.
- When you need a quick estimate before committing to a purchase or project
- When comparing different options or scenarios side by side
- When planning a budget and need to understand potential costs
- When you want to verify a quote or estimate you've received from a professional
- When teaching or learning about the concepts behind these calculations
Frequently Asked Questions
How long does a 20 lb propane tank last in an RV?
A 20 lb tank holds 4.7 gallons of propane. With moderate usage (furnace 8 hrs, fridge 24 hrs, stove 1 hr, water heater 2 hrs), it lasts about 3-5 days. In warm weather with just fridge and cooking, it can last 2-3 weeks. In cold weather with heavy furnace use, it might only last 2 days.
How long does a 30 lb propane tank last in an RV?
A 30 lb tank holds 7.1 gallons. With moderate usage, expect 5-8 days. With light usage (no furnace), it can last 3-4 weeks. Many RVs have two 30 lb tanks for a combined 14.2 gallons, which doubles these estimates.
What uses the most propane in an RV?
The furnace is by far the biggest consumer at 30,000-40,000 BTU/hr. Running a furnace for 8 hours uses as much propane as running a fridge for nearly a week. The water heater is the second biggest consumer. The fridge in propane mode is very efficient at only 1,500 BTU/hr.
How many BTU per gallon of propane?
One gallon of propane contains 91,500 BTU of energy. One pound of propane contains about 21,600 BTU. A 20 lb tank holds about 4.7 gallons (429,450 BTU total), and a 30 lb tank holds about 7.1 gallons (649,650 BTU total).
How can I reduce propane usage in my RV?
Use electric hookups when available for fridge and water heater. Use a portable electric space heater instead of the furnace. Cook with an electric cooktop or outdoor grill. Insulate windows and doors. Use a tank blanket in cold weather. A catalytic heater uses 50-75% less propane than a forced air furnace.
Should I run my RV fridge on propane or electric?
Use electric when you have hookups or a generator running — it's essentially free and works better in hot weather. Use propane when boondocking. The propane fridge uses only 1,500 BTU/hr (about 0.4 gallons per day), so it's very efficient and won't drain your tanks quickly.