Weight Loss Timeline Calculator
Realistic date to reach your goal weight.
Enter your values
Enter the current weight in kg.
Enter the goal weight in kg.
Enter the daily calorie deficit in kcal.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Time to goal
- 26.4 weeks (6.1 months)
- Weekly loss rate
- 0.45 kg/week
- Total to lose
- 12 kg
- Percent of body weight
- 13.3%
Quick answer
About 7,700 kcal equals one kilogram of fat, so a daily deficit converts directly to a weekly loss rate.
weeks = (kg to lose x 7700) / (daily deficit x 7)
At a glance
| What it does | Realistic date to reach your goal weight. |
|---|---|
| Category | Health |
| Inputs needed | Current weight, Goal weight, Daily calorie deficit |
| Main output | Time to goal |
| Formula | weeks = (kg to lose x 7700) / (daily deficit x 7) |
| Cost | Free — no sign-up, no download |
How to use the Weight Loss Timeline Calculator
- 1Enter your current and goal weight.
- 2Choose a deficit — 500 kcal is sustainable for most people.
- 3Expect the rate to slow as you get lighter.
Inputs explained
- Current weight(kg)
- Enter the current weight in kg.
- Goal weight(kg)
- Enter the goal weight in kg.
- Daily calorie deficit(kcal)
- Enter the daily calorie deficit in kcal.
Worked example
Using the values the calculator loads with:
Inputs
- Current weight90 kg
- Goal weight78 kg
- Daily calorie deficit500 kcal
Results
- Time to goal26.4 weeks (6.1 months)
- Weekly loss rate0.45 kg/week
- Total to lose12 kg
- Percent of body weight13.3%
Frequently asked questions
Is 1 kg a week safe?
It is aggressive; 0.5-0.75% of body weight per week preserves more muscle.
Why did I stall?
Metabolic adaptation and creeping portion sizes; recheck intake and consider a diet break.
What do I need to enter into the Weight Loss Timeline Calculator?
Just 3 values: current weight, goal weight, daily calorie deficit. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Weight Loss Timeline Calculator work out the answer?
About 7,700 kcal equals one kilogram of fat, so a daily deficit converts directly to a weekly loss rate. It applies the formula weeks = (kg to lose x 7700) / (daily deficit x 7) and shows the working so you can check each step by hand.
Is the Weight Loss Timeline Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.