Weekly Weight Loss Calculator and Printable Journal Results

Track your weight loss progress once a week with a simple calculator that turns your numbers into a clean, printable weekly results page. Save each week’s results and build a personal journal of your progress over time.

Why Daily Weighing Feels Confusing

Weighing yourself daily can be misleading. Your weight fluctuates daily due to water, sodium, digestion, and other normal factors. A single daily number can be misleading.

A Better Approach: Weekly Tracking

Track your progress once per week to reveal the true trend of your weight loss. People who track their progress are more likely to stay aware, stay focused, and keep moving toward their goals.

Enter Your Information

Use month/day/year, like 12/19/2025.

Please check your entries. Your current weight should not be higher than your starting weight for this calculator.

Enter your information above, then click Calculate to update the journal results below.

Here are your results for the current week

The boxes below match the weekly journal PDF so the screen and printed page stay easy to compare.

Begin diet date
Begin diet weight
Height
This week date
This week weight
Waist measurement
Elapsed days
Loss to date
Avg loss / day
Projected / week
Projected / 4 weeks
BMI start
BMI this week
BMI change
BMI range

What These Numbers Mean

Small weekly changes add up to meaningful long-term progress. Even steady, moderate improvement can produce real results over time.

Set Realistic Expectations

Healthy weight loss is commonly described as about 1 to 2 pounds per week. Consistency matters more than speed.

About BMI

BMI estimates body weight relative to height. It is a general guideline, not a medical diagnosis. BMI does not measure body fat directly and may not fit every body type.

This site is for general information and personal tracking only. It is not medical advice.

Come Back Each Week

Your printed weekly journal report includes our website name in the upper-right corner. Use that web address to return each week, enter your updated numbers, and download your next weekly journal report.

To make weekly tracking easier, add a repeating calendar reminder on the same day each week. A simple reminder like “Update DietStats journal” can help turn weekly tracking into a habit.

Why a Weekly Journal Helps

A weekly journal gives you a simple way to compare your progress over time. Instead of reacting to one daily weigh-in, you can look at your start date, starting weight, current weight, BMI change, and average progress from week to week.

Some weeks will show progress, some weeks will be flat, and some weeks may move the wrong direction. That is normal. Keeping a weekly record helps you see the longer-term pattern and stay focused on the overall trend instead of one unusual day.

Use the same day each week when possible, save or print your results, and keep building your personal weight loss journal one week at a time.

Weekly Journal Printout

Print one sheet each week and keep the pages as your journal. If you prefer, you can also copy only the numbers you want into a booklet or spreadsheet.

Create a filled weekly results PDF. On iPad or iPhone, the PDF may open in a preview screen. Use the Share button to save, print, email, text, or AirDrop it. Tap Back to return to this calculator.