PropaneTankRefillCost.com is an independent resource. Not affiliated with any propane retailer or fuel company. Prices based on 2026 published retailer pricing and EIA data. Confirm current prices with your local retailer.
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Last verified April 2026

Propane Refill Cost Calculator 2026: Retailer Estimates

Select your tank size, retailer, and region for a real 2026 cost estimate. No exchange conversion charts - this maps directly to refill station pricing.

BBQ grill, portable heater • 3.76 gal usable
U-Haul - 20 lb Tank - South (TX, FL, SE)
$13.16
estimated total cost
$/gallon
$3.50
$/lb propane
$0.83
Gal received
3.76
U-Haulpricing guide →
Top 3 cheapest for 20 lb in South (TX, FL, SE)
$10.90
$13.16

How These Estimates Are Calculated

Tank capacity figures use DOT-standard fill rates: all portable tanks are filled to 80% of nominal capacity by regulation. Tank capacity to gallon conversion: 20lb = 4.7 gal capacity / 3.76 gal usable; 30lb = 7.1 gal / 5.66 gal; 40lb = 9.4 gal / 7.5 gal; 100lb = 23.6 gal / 18.9 gal.

Per-gallon prices are sourced from published retailer pricing pages, April 2026. Regional multipliers are derived from EIA Residential Propane Price by State data: Northeast +30% above South baseline, Midwest +15%, West +20%.

Exchange network prices (Blue Rhino, AmeriGas) reflect the flat per-tank fee for a 15lb short-fill. The effective per-gallon equivalent is calculated at 3.53 gallons (15lb at 4.24 lb/gal). Confirm all prices with your local retailer before travel.

Calculator FAQ

How accurate is this propane refill calculator?⌄
The calculator uses 2026 published retailer pricing verified in April 2026. Per-gallon rates are sourced from each retailer's published pages. Regional multipliers are derived from EIA data. Actual prices at your location may vary by 5-15%. Always confirm with your local retailer before driving.
Why does the calculator show different costs for the same tank size?⌄
Propane per-gallon prices vary significantly by retailer - from $2.80/gal at Costco to $4.15/gal at Tractor Supply. Exchange networks charge a flat fee but only fill to 15lb, making them the most expensive per pound. Regional pricing also varies - the Northeast runs 30% above Gulf Coast prices.
Does the region selection affect the result?⌄
Yes. The Northeast typically runs 30% above the South (Gulf Coast baseline) due to transport costs and seasonal demand. The calculator applies EIA regional data to adjust estimates. If you're in the Northeast, expect the high end of retailer ranges. If you're in Texas or Florida, expect the low end.
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Updated 30 April 2026