Calorie Cycling Calculator

Calorie cycling (also called calorie shifting) involves alternating between higher- and lower-calorie days while maintaining the same weekly calorie deficit. The 5:2 approach uses 5 lower-calorie days and 2 maintenance days

The calculator uses the standard published formula for calorie cycling. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with kilograms, inches, watts. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Set a weekly calorie deficit target (e.g. 3,500 kcal/week = 0.5 kg/week loss). Each step in the calculation is shown so you can verify the result manually.