Skip to content
Holt

Weight loss percentage calculator

Work out what percentage of your starting weight you’ve lost — the way GLP-1 trials and many clinicians describe progress.

Enter both weights to see your result.

Runs in your browser. Nothing you enter is sent anywhere.

Good to know

Percentage change is how clinical trials of GLP-1 medications report results, because it compares people of different sizes fairly.

Day-to-day weight moves with water, salt and digestion. Compare readings taken at the same time of day, and focus on the trend across weeks.