Choosing a crate, a harness or a food bag ahead of time is easier when you have a figure for the adult weight. This calculator divides the current weight by the share of growth already completed at this age, then shows the projected adult weight as a range, the midpoint of that range, and how much weight is still to come.
There is only one formula here, current weight divided by the share of growth completed, and the result repeats the numbers you entered on its formula line. The tool does not pick the percentage for you. Judging life stage and when growth has finished is work your veterinarian does for the individual dog, following the AAHA life stage guidelines. Guidance current as of October 2026.
No recognized standard table of growth curve coefficients by breed and age exists. This tool therefore offers no breed selector, and it does not calculate feeding amounts or body condition. The result is an extension of the percentage you entered rather than a forecast, and the error is large. This tool is for reference only and does not replace veterinary care. Contact your veterinarian right away if you notice symptoms or suspect a problem.
Frequently Asked Questions
Ask your veterinarian roughly what share of growth your puppy has completed at this age and enter that figure. If you are given a range, split it between the low and high boxes, and if you only get one number, put it in both.
There is no recognized standard table giving the share of growth completed by age for each breed. Built in breed numbers would simply move the error around, so this tool asks you for the reference point you are working from.
The timing of neutering can affect when growth ends and how much energy a dog needs. This tool does not convert that effect into pounds, so discuss the timing with your veterinarian.