Bird Feeder Calculator
Seed volume and refill frequency from feeder size and bird traffic.
Inputs
Results
Seed Capacity (lbs)
7.46
Refill Every (days)
14.9
Feeder Volume (in³)339.3
Daily Consumption (lbs)0.5
Cost per Refill ($)$11.20
Monthly Cost ($)$22.50
Annual Cost ($)$270.00
Annual Seed (lbs)182.5
How to Use This Calculator
- Measure your feeder's internal diameter in inches and the height of the seed chamber.
- Estimate daily bird visits — suburban yards average 15-30, wooded areas 30-80.
- Enter your seed cost per pound and the seed density for your seed type (sunflower ~0.022 lb/in³).
- Review seed capacity in lbs and the refill interval in days to plan your stocking schedule.
- Compare monthly and annual costs to budget for the season.
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