Seed cost calculator & measured refill log

Use your bag’s price and net weight, then weigh what you add. A refill log can show the cost of measured additions without guessing how much the birds ate.

Your measured refill log

Example only: a $20 bag weighing 10 lb costs $2/lb. A measured 0.5 lb refill costs $1. Your personal log below starts empty.

No refills yet. Weigh your next addition to start a useful log.

Three measurements make a useful entry

Record the package price, package net weight and actual amount added. Keep the refill date so you can see the time between your own observations. Optional measured waste is a separate observation, not an assumed percentage.

A hopper’s advertised liters or quarts cannot be converted into seed weight without a measurement. Different foods and mixes pack differently, so capacity alone cannot establish a cost per refill.

Old refills keep their old cost

Each logged refill retains the package price and weight you entered for it. Changing to a new bag does not rewrite the earlier entries. Totals show how many observations are complete and how many still lack a date or measurement.

The log stays in this browser when you save it. Public comparison links and analytics exclude refill amounts, dates and history. You can choose to include private history in a local backup from My setup.