Slim Weight Calorie Calculator

Use our FREE Slim Weight Calorie Calculator to calculate the number of calories you should eat each day to reach and maintain your slim weight goalThe Fat Chance! weight loss program is based on learning to eat like a slim person from Day 1. So understanding what your slim weight calorie intake should be is the first step to weight loss. The formula, using the Mifflin-St Jeor equation to calculate your BMR, multiplied by an activity factor (and a full explanation) is found in Appendix 1 of Fat Chance! The no-going-back Weight Loss Workbook.

Please be sure to use the specified unit of measure. 
Height must be in centimetres (NZ option).
Do not overestimate your activity level (better to choose lower).
Please allow for individual variation and round the answer to suit you.
Answer may be recalculated if you increase your regular activity level.


Unit Preference:

Your Gender:

Activity Level:

"The Mifflin-St Jeor equation has been found to be the most accurate and reliable [equation calculating BMR] ... in a scientific comparison of four predictive equations commonly used in clinical practice"Frankenfield et al, 2005
Headshot of Mike 

Mike lost 10kg (22lbs)
"Fat Chance! started me on a path to slimness and happiness that had eluded me. The idea that we should eat like a slim person just made sense to me. For the first time I found something that worked. I wonder how many other blokes are brave enough to try this program?"
Headshot of Lara

Lara lost 20.4 kgs (45lbs) and 22cm (10") around her waist
"The changes I've made are sustainable lifetime ones. I have learned to love moving - I still surprise myself. I love being able to buy clothes 'off the rack' at normal clothes stores. Thank you Fat Chance!"