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Weight Trend Tracker

Which way are my weigh-ins heading?

Paste your dated weigh-ins to see the overall change and the trend per week.

One Click Answers · Weight Trend Tracker
oneclickanswers.com/weight-trend-tracker · Printed
About this tool & how to use it

What it does

Takes dated weigh-ins in any order and shows the overall change and the best-fit trend per week. Nothing is saved.

How to use it

  1. Choose pounds or kilograms.
  2. Enter one weigh-in per line as a date and a weight, in any order.
  3. Read the change from the first entry to the last, then the trend per week.

Dates such as 2026-09-06 or 9/6/2026, in any order. Nothing is saved: your list stays in this page, so keep your own copy.

One click answer

Your answer will appear here.

Fill in the form and your answer appears here as you type.

Assumptions

  • The entries are yours. The page does not smooth, estimate or fill in days you skipped.
  • It never says what a weight should be.
  • Everything you type stays in this page. Nothing is sent or saved.

Printed from oneclickanswers.com. Results are estimates based on what was entered; see the assumptions above.

How it works

The overall change is the last entry minus the first by date.

The trend is a least-squares line through all the entries: the slope in weight per day, times 7.

A line through every entry is steadier than the first-to-last difference when one day is unusual.

Formulas and details
  • Trend per week = 7 x least-squares slope of weight against date.

Assumptions

  • The entries are yours. The page does not smooth, estimate or fill in days you skipped.
  • It never says what a weight should be.
  • Everything you type stays in this page. Nothing is sent or saved.

Example

Input: The starting values already in the form

Result: Across 5 entries over 28 days, the first and last entries differ by 2.6 lb (1.4% down). The trend line through all the entries runs about 0.55 lb a week down.

Questions

Why a trend line?

A single weigh-in moves from day to day. A line through several shows the direction more steadily.

How many entries do I need?

Two are enough for a change, and a few more make the trend more useful. Entries on different days are required for a weekly trend.

Last reviewed 2026-10-04.

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