Weight Loss Tracker
Log weigh-ins to see total change, weekly average loss, and progress toward your goal weight.
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About the Weight Loss Tracker
The scale is noisy: water, food volume, sodium, and hormones can swing your weight two or three pounds overnight, which is why a single reading tells you almost nothing and a trend over weeks tells you almost everything. This tracker logs each weigh-in, shows the change since your last one, and rolls everything into a clear picture of total progress toward your goal weight so you can stay motivated by the direction of travel rather than the daily jitter.
You set a start weight and a goal weight, then add dated weigh-ins as you go. The tool calculates how much you have lost so far, how much you have left, and what percentage of the total journey you have completed, displaying it all as summary cards and a progress bar. Losses show in green and gains in red so a stall or a bounce is instantly visible.
How the Weight Loss Tracker works
Each row records a date and a weight. The per-row change is the previous weight minus the current one, so a positive number is a loss and shows with a minus sign in green; the first row is compared against your start weight. Total change is start weight minus your latest logged weight, and remaining is your latest weight minus your goal weight.
The overall goal amount is start weight minus goal weight, and percent achieved is total change divided by that goal amount, capped between 0 and 100. So the progress bar fills as your cumulative loss approaches the full gap between where you began and where you want to be, and it reaches 100% the moment your latest weigh-in hits or passes the goal.
Worked example
Set a start weight of 185 lb and a goal of 165 lb, a 20 lb target. Log weekly weigh-ins of 185, 183, 181, 179, 177, and 175. Your latest weight is 175, so total change is 185 - 175 = 10 lb lost, and each week shows a clean 2 lb loss in the change column.
Remaining to goal is 175 - 165 = 10 lb still to lose, and percent achieved is 10 / 20 = 50%, filling the progress bar halfway. At the steady 2 lb per week pace shown, the projection is roughly five more weeks to reach 165 lb.
Tips & common mistakes
- Weigh under the same conditions every time first thing in the morning, after the bathroom, before eating or drinking so you are comparing like with like and not measuring last night's dinner.
- A weekly average smooths the noise better than any single day; if you weigh daily, judge progress by comparing this week's average to last week's rather than reacting to one high reading.
- One to two pounds a week is a sustainable, muscle-sparing rate; faster loss often means water and lean tissue, and it tends to rebound, so a stall of a few days is normal, not failure.
- Expect a whoosh pattern weight can hold flat for a week then drop suddenly as retained water releases, so keep logging through plateaus instead of slashing calories in a panic.
Weight Loss Tracker: frequently asked questions
Why did my weight go up even though I stayed on plan?
Short-term jumps are almost always water, not fat. A salty meal, a hard workout that inflames muscle, higher carb intake, constipation, or hormonal shifts can each add a pound or more of water overnight. Because a pound of fat is about 3,500 calories, a real overnight fat gain is nearly impossible on a diet keep logging and the trend will reassert itself.
How is the change column calculated?
It subtracts your current weigh-in from the one before it, so a drop shows as a green negative number and a rise shows as a red positive one. The very first entry is compared against the start weight you set at the top, which is why that row reflects progress from day one rather than showing zero.
What is a realistic weekly loss rate?
For most people one to two pounds per week is both achievable and sustainable, corresponding roughly to a 500 to 1,000 calorie daily deficit. Heavier individuals can safely lose faster at first, while those close to goal should expect slower, harder-won progress and should lean on the trend rather than expecting a steady drop every week.
What does the percent-achieved number mean?
It is the share of your total goal you have completed: total pounds lost divided by the full gap between your start and goal weights. If you started at 185, aim for 165, and now weigh 175, you have lost 10 of the 20 pounds, so you are 50% there. It caps at 100% once you reach or pass your goal.
Should I track body measurements too?
Yes, especially if you are exercising. When you build muscle while losing fat, the scale can stall even as your waist shrinks, a phenomenon called recomposition. Logging waist, hip, and other tape measurements alongside weight gives a fuller picture and keeps you motivated when the scale is being stubborn.