Free Slimming World Syns Calculator 2020

Check out the free Syn Calculator to help you on your Slimming World journey.

Anyone who has followed the Slimming World plan would of heard the word “Syn” being mentioned..

Syns are a way of still getting in some of your favourites or naughty treats. Chocolate, crisps. cocktails, booze… the list is endless. Everything that is not a free food has a Syn value and can be found In the Slimming World database after signing up to the plan. 

Your Syn allowance depends on your weight and the allowance is greatly different between male and female. Ranging from 15 – 35 per day. It is EXTREMELY important to be evaluated and find out your Syn allowance. 

You are here because you are looking for a Syn calculator, sadly the only way to access the Syn database and calculator is by joining Slimming World as a paid member. This really is the only fail safe way to find out the Syns in products. 

But for any one who is trying to go the diet alone or just by using the magazines it can be hard work trying to find out the syn values of products. There is a way….. but it is not 100%, however it does work for MOST foods.





Syn Maths…

There is no actual Syn calculator but the general rule of thumb seems to be 20 calories = 1 Syn.

So for example:

100 calories = 5 Syns
69 calories = 3.5 Syns and so on.

There also seems to be another theory around the internet to take the fat content + Carb content and divide by 5. This does usually work too.


How many Syns Should I be eating per day?

Sign up to Slimming World or Join a local group to find out the exact quantities for your weight. They can vary from 15 to 35 a day depending on your weight and male/female status.


The Slimming World website states:

Our wonderful Syns team take into account a number of different things when working out the Syn value of foods so although it’s not a formula as such, there is some method behind each and every Syn value 🙂

You may spot on social media sites that many members use a 20 calories = 1 Syn rule and although this does work for some items, it doesn’t work for all so to really protect your weight losses, we would always recommend checking the Syns Online database (where we have done the hard work for you), and if the item you need isn’t listed, pop the nutritional information into the Syns Calculator and you will never be without a Syn value again.

How Can I Track My Syns?

Check out my amazing Syn tracker chart, print your own…