⚖️ Weight Loss Percentage Calculator
Find out what percentage of your starting body weight you have lost so far.
How to calculate weight loss percentage
Tracking the percentage of body weight lost, rather than just pounds or kilograms, gives a more meaningful picture of progress, since losing the same amount of weight is a bigger relative change for a smaller person than a larger one.
The formula
Weight Loss % = ((Starting Weight − Current Weight) ÷ Starting Weight) × 100. Enter your starting weight and your current weight in the same unit, and the calculator works out both the percentage and the raw amount lost.
A negative result means weight has been gained rather than lost since the starting point. This calculator is for general tracking and educational purposes only and is not medical advice; consult a healthcare provider for guidance on healthy weight loss goals and rates.