Weight & BMI Tracker (Obsidian Plugin)

Track daily weight, visualize trends, automatically calculate + chart BMI, and import or export your data.

Features

• Log today's weight with one command (auto-fills today's date)
• Weight trend line chart
• Automatic BMI calculation from your height
• BMI trend chart with category-colored points
• Duplicate entries for the same day are replaced
• Configurable units (kg / lbs), height, and BMI thresholds
• Dashboard display range: last 10, 15, 30, or 60 days, all, or a custom 1–99999 days
• Import previous weight data from CSV or JSON (paste or file)
• Export your data as CSV or JSON (select and copy the preview, or save into the vault)

Install (development)

1. Copy this folder into <vault>/.obsidian/plugins/weight-bmi-tracker/
2. npm install
3. npm run build
4. Enable the plugin in Settings → Community Plugins

Usage

• Ribbon icon (scale) or command palette → "Open Weight Tracker Dashboard"
• Command palette → "Add Today's Weight"
• Command palette → "Import Previous Weight Data" (also an Import Data button on the dashboard)
• Command palette → "Export Weight Data" (also an Export Data button on the dashboard)
• Dashboard → Display range: last 10, 15, 30, or 60 days, all, or custom (1–99999 days)

Import / Export

Import

Command palette → "Import Previous Weight Data". Paste text, or choose a .csv / .json file.

CSV — one date,weight per line. A date,weight or date,weight,bmi header is optional, and commas, semicolons, or tabs all work:

date,weight
2026-10-01,74.2
2026-10-02,74.0

JSON — an array of { "date": "...", "weight": ... }, or an object containing a weightData array:

{ "weightData": [ { "date": "2026-10-01", "weight": 74.2 } ] }

Dates are normalized to YYYY-MM-DD (MM/DD/YYYY and DD.MM.YYYY are also accepted). Invalid rows are skipped and reported. Pick Merge with existing (same-date entries are replaced — the default) or Replace all data.

Export

Command palette → "Export Weight Data", or the Export Data button on the dashboard. Choose a format, then select the preview text and copy it with your system shortcut, or Save to vault.

• CSV — date,weight,bmi (opens in any spreadsheet, and re-imports cleanly)
• JSON — { "weightData": [ { "date": "...", "weight": ..., "bmi": ... } ] } (keeps every field)

Saved files go to the vault root as weight-data-YYYY-MM-DD.csv / .json, with -1, -2, … appended if that name is taken. BMI is always recalculated from your current height and unit when importing.

Privacy

The plugin keeps its data in data.json inside the plugin folder and never reads or writes the system clipboard. Export shows your data in a read-only preview that you select and copy yourself; Save to vault writes the file into your vault.

BMI formula

Metric: BMI = kg / m² Imperial: BMI = 703 · lb / in²

License

MIT