Health Tools

Weight Goal Date Calculator

By 5 min read Evidence based

Set a goal weight and a pace you can keep. See the date you will reach it and the daily calorie change that pace needs.

Weight goal date calculator

See how long it takes to reach your goal weight at a safe weekly pace.

0
0Weeks needed
0Daily calorie change
0Total change

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On this page
  1. How the date is worked out
  2. What is a safe pace
  3. Why sleep matters for your goal

How the date is worked out

One kilogram of body fat holds roughly 7,700 kcal of energy. Losing 0.5 kg a week needs a daily gap of about 550 kcal between what you eat and what you burn. The tool divides the weight difference by your weekly pace to give the number of weeks, then adds them to today's date.

Bodies adapt, so weight loss tends to slow as you get lighter. Treat the date as a plan to review every few weeks.

What is a safe pace

The CDC calls 0.5 to 1 kg (1 to 2 pounds) a week a safe and sustainable rate for most adults who need to lose weight. Gaining 0.25 to 0.5 kg a week is a gentle rate for healthy weight gain with strength training. Find your starting point with the BMI calculator and your daily needs with the calorie calculator.

Why sleep matters for your goal

Short sleep raises hunger hormones and lowers the amount of fat lost during a diet. In one study, dieters who slept 5.5 hours lost 55 percent less fat than those who slept 8.5 hours. Protect your sleep while you change your weight. Use the bedtime calculator to plan it.

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Frequently asked questions

How fast can I safely lose weight?

Most guidelines suggest 0.5 to 1 kg a week. Faster loss is harder to keep and may cost muscle.

How many calories make a kilogram?

About 7,700 kcal per kilogram of body fat, a rule of thumb that works over weeks, not days.

Why does my progress slow down?

As you lose weight your body needs fewer calories, so the same eating plan creates a smaller gap.

Is this suitable for everyone?

No. If you are pregnant, under 18, or have a medical condition, speak with a doctor first.

Medical references: for evidence based health information see CDC Sleep and Sleep Disorders, NIH NHLBI on Sleep Deprivation, American Academy of Sleep Medicine Sleep Education and MedlinePlus. This page is general information, not medical advice.