Calorie Deficit Calculator
Compare maintenance calories with intake as daily and seven-day energy difference.
How to use
- Enter positive maintenance calories and non-negative intake calories.
- Calculate daily deficit/surplus and the seven-day energy difference.
Capabilities and scope
The runner does not predict weight loss; it only evaluates the sign and magnitude of maintenance−intake.
How it works
dailyDifference=maintenance−intake; the seven-day display is its absolute magnitude×7.
Example
Maintenance 2200 and intake 1800 produce a 400 kcal/day deficit and 2800 kcal over seven days.
Useful for
- Quantify the energy gap in a meal plan
- Check whether planned intake is below or above estimated maintenance
Before you use it
- It does not convert calories to a fixed body-weight change; real change depends on adaptation, water, activity, and other factors.
Frequently asked questions
Does the seven-day number equal predicted weight loss?
No. The runner intentionally reports only energy difference, not a guaranteed body-weight change.