Weight Loss Percentage Calculator

% lost = (start − current) ÷ start × 100 — pounds or kilos, same maths.

Result

Weight lost15
% lost7.5%
% to goal15%
Progress50% of the way

Weight Loss Percentage Calculator — FAQs

Why track % not pounds?

10lb off 150lb is 6.7% — a different achievement than 10lb off 300lb (3.3%). Percentage normalises progress across body sizes.

What's healthy pace?

0.5–1% of body weight per week — faster usually means muscle loss alongside fat.

Need a Custom Tool Built?

We build calculators, estimators and internal tools for businesses in the UK and North America.

Get a Quote

Embed this Weight Loss Percentage Calculator on your site

Free to use — paste this snippet into any webpage. It auto-resizes and includes a small attribution link. Add ?theme=dark to the iframe URL for dark mode.