Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Intermittent Fasting Calculator

Plans your daily eating window, meal end time, and per-meal calorie distribution for any intermittent fasting protocol. Ideal for structuring 16:8, 18:6, or custom fasting schedules around your lifestyle.

Fasting Hours

First Meal Time (PM (24hr format: use 12-23))

Daily Calorie Target (calories)

Meals in Eating Window

Fill in the required fields to see your result.

Weight Loss

Weight Loss Timeline Calculator

Calculate the number of weeks needed to reach a target weight given current weight, goal weight, and planned weekly loss rate. Use it to set realistic timelines and avoid the disappointment of expectations mismatched with sustainable rates.

Current Weight (kg)

Goal Weight (kg)

Weekly Weight Loss (kg/week)

Fill in the required fields to see your result.

Key differences

	Intermittent Fasting Calculator	Weight Loss Timeline Calculator
Category	Weight Loss	Weight Loss
Inputs required	4	3
Result	IF Schedule Details (hours)	Time to Reach Goal (weeks)
What it does	Plans your daily eating window, meal end time, and per-meal calorie distribution for any intermittent fasting protocol. Ideal for structuring 16:8, 18:6, or custom fasting schedules around your lifestyle.	Calculate the number of weeks needed to reach a target weight given current weight, goal weight, and planned weekly loss rate. Use it to set realistic timelines and avoid the disappointment of expectations mismatched with sustainable rates.