W2F
Weight2Fit
GitHubSource Code

Convert your body composition data into a Garmin-compatible .fit file that you can upload to Garmin Connect

In-browser only — no data ever leaves your browser. You can audit the source code on GitHub or deploy your own instance.
Body Data
Generate .fit
Upload to Garmin
Body Measurements

Enter your measurements. Only weight is required.

Date & Time
Timestamp
-- :
Basic
Weight *
kg
Height
cm
BMIAUTO CALCULATED
—
Body Composition
Body Fat
%
Bone Mass
kg
Skeletal Muscle Mass
kg
Body Water
%
Advanced
Visceral Fat
rating
Metabolic Age
yrs