Daily weight fluctuation: is mine normal?

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Order and separators don't matter, comma or dot as decimal mark. Several weigh-ins on the same day are averaged.

Drop a file here or

Apple Health (export.zip or export.xml), Withings (weight.csv or ZIP), Google Fit (Takeout CSV), Happy Scale, Libra, openScale, Trendcurve and any CSV with a date and a weight column.

kg
kg

If you have already loaded weigh-ins under "With weigh-in history", the checker places the jump in your own history.

From yesterday to today

Your fluctuation Example data

This is made-up example data covering twelve weeks, so you can see what a result looks like. Paste your own weigh-ins above.

Typical fluctuation
Days in your usual band
Latest value vs. trend
Daily weigh-ins (noise) Trend

Assessment

Biggest outliers

Above the trend
Date Weigh-in Trend Deviation
Below the trend
Date Weigh-in Trend Deviation

What can be behind a jump

An overnight jump is almost always water and stomach contents, not fat. These causes are common, and often several act together.

  • Salty food: A lot of salt temporarily makes your body hold more water. The scale shows it the next morning, and it goes back down after a few days of normal eating.
  • More carbohydrates: Your body stores carbohydrates as glycogen and holds water along with it. After a carb-heavy day the number goes up without any fat being added.
  • Exercise: After unusually hard or new training, your muscles hold more water for repair. It shows on the scale for a few days and then settles.
  • Menstrual cycle: Many women see higher values in the second half of the cycle and before their period, because hormones shift water balance. They usually drop again once the period starts.
  • Digestion: Whatever is still in your gut counts too. Irregular digestion or a large, high-fibre meal the evening before shifts the morning value.
  • Time and conditions: In the evening, after eating, with clothes on or on a different floor the scale reads differently than in the morning on an empty stomach. Same conditions make your values more comparable.