Work out bird seed quantity instantly with clear inputs, formula shown and shareable results.
Seed use is feeders times daily consumption times days, converted to kilograms and priced at the bag rate, with refills counted at 500 g of capacity per feeder. Winter consumption can double, so planning a month at a time and tracking refills is what stops feeders standing empty in the coldest weeks.
Seed quantity
kg = feeders x grams per feeder per day x days / 1000
kg = feeders x grams per feeder per day x days / 1000. Seed use is feeders times daily consumption times days, converted to kilograms and priced at the bag rate, with refills counted at 500 g of capacity per feeder.
Winter consumption can double, so planning a month at a time and tracking refills is what stops feeders standing empty in the coldest weeks.
Enter number of feeders, seed per feeder per day, period to plan for, seed price per kg. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.