Log weigh-ins, see the change between entries, and watch the trend line — because the trend is the truth, not any single weigh-in. Saves in your browser; CSV export. Free.
| Date | Weight | Change | Notes |
|---|
💾 Saves in this browser only. Entering a date that already exists updates that entry. This journal is a record-keeping aid, not medical advice — for weight concerns, talk to your GP.
Key takeaways:
A weight journal is a dated log of weigh-ins with a chart that shows the trend rather than any single number. It exists because day-to-day weight swings by a kilogram or more from water, salt and hormones — a journal with a trend line is how you tell real progress from normal daily noise.
Use the notes field like a scientist: "started gym", "holiday week" — so the chart's bumps and dips have explanations you can actually learn from over time.
Day-to-day weight swings by a kilogram or more from water, salt, carbohydrate stores, and timing — none of it fat. That's why single weigh-ins mislead and why this journal draws the line chart: three weeks of gently falling dots is real progress even when yesterday's number jumped. Use the notes column like a scientist — "started gym", "holiday week" — so the chart's bends have explanations you can learn from.
Pair the journal with context from our BMI Calculator and Calorie Calculator, plan the food side with the Meal Planner, and remember that trends over months — not days — are the only version of this number worth reacting to.
How often should I weigh myself?
Weekly, same conditions, suits most people — enough signal without the daily noise. Daily weighing is fine only if you genuinely judge by the weekly trend and not this morning's number.
Why did my weight jump overnight?
Water. Salt, carbohydrates, travel, and hormones shift fluid by a kilogram or more day to day. Fat changes are slow and steady; overnight jumps are almost never fat.
What's a realistic rate of weight change?
Around 0.25–1 kg per week is the commonly recommended, sustainable band for weight loss. Faster usually means water and muscle. Discuss targets with your GP for your situation.
Can I edit an entry?
Add an entry with the same date and it replaces the original — handy for typos.
Is my weight data private?
Yes — entries stay in this browser on this device, never uploaded. Export the CSV as backup or to share with your GP or dietitian.
Can I download or print my weight journal as a PDF?
Yes — Print / Save as PDF and Download PDF both produce a dated table of every entry with the change between them, ready to save, print or bring to an appointment.
Can I email my weight journal to my GP or dietitian?
Yes — Email opens your mail app with your entries and overall change pre-filled as text. Attach the downloaded PDF or exported CSV for the full record.
Does the PDF include the trend chart?
The PDF and print copy include the full data table and your overall change, which is the part worth keeping as a record — take a screenshot of the on-screen chart if you specifically want the visual line included too.