1,000-Calorie Deficit for 8 Weeks: How Much Weight Will I Lose?

An aggressive 1,000-calorie daily deficit sustained for 8 weeks projects to approximately 16 pounds of fat loss.

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How to use this tool

Enter daily calorie needs (tdee), daily calorie intake and projection weeks in the fields above.
Results update instantly as you type — or click Calculate.
Read your weekly deficit and the full breakdown beneath it.

Calculate the projected weight loss from maintaining a 1,000-calorie daily deficit for 8 weeks.

Frequently asked questions

What is TDEE?: Total Daily Energy Expenditure — the total calories you burn per day including exercise and daily activity. Use a TDEE calculator if you don't know your number.
Can I also project a surplus (muscle gain)?: Yes — enter an intake higher than your TDEE. The deficit will be negative, representing a surplus, and weight change will be positive.