About the Average Daily Gain Calculator
Average daily weight gain and the days needed to reach a target weight.
Also known as: adg calculator, daily weight gain, growth rate livestock, days to finish.
How to use this calculator
- Enter starting weight, current weight, days on feed, target weight.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
ADG = (current weight − start weight) ÷ days
Worked example
Using the values pre-filled in the calculator above:
- Starting weight = 250 kg
- Current weight = 420 kg
- Days on feed = 120
- Target weight = 620 kg
the calculator returns:
- Average daily gain: 1.4167 kg/day
- Total gain so far: 170 kg
- In grams per day: 1,417
- Days to reach the target: 141