Propane Usage Estimator

How This Estimator Works

This calculator uses three inputs to produce your estimate:

1. Tank size — the usable gallon capacity (listed as 80% of the total volume, since tanks are never filled above 80%)
2. Current gauge percentage — the reading from your tank's dial gauge
3. Daily usage — your estimated gallons used per day

The calculator then computes:

• Gallons remaining = tank capacity × (gauge % ÷ 100)
• Reorder threshold = 20% of tank capacity (gallons at 20%)
• Days until reorder = (gallons remaining − gallons at 20%) ÷ daily usage
• Reorder date = today + days until reorder

Why Use PropanePal Instead?

This estimator requires you to know your daily usage rate — which most people don't. PropanePal removes that requirement by calculating your actual usage rate from the gauge readings you log over time. After a few weeks of regular logging, PropanePal knows exactly how fast your specific tank is being used under your specific conditions — and updates the reorder date prediction automatically every time you add a reading.

The estimator above is useful for a quick calculation. PropanePal is useful for ongoing, accurate, personalized tracking.