How Many Syns In A Teaspoon Of Sugar? & Some Low Syn Alternatives

Updated on 
9 March, 2026

Is Sugar High In Syns? How Many Syns In A Tsp Of Sugar..

Many people prefer to have sugar in their tea or coffee, but when dieting, sugar can add sneaky syns and calories to your food without you knowing which is why you have to track your sugar as syns.

Sugar has 1 syns per teaspoon and 2.5 syns a tablespoon making it low in syns when consumed in moderation as long as you track it on the slimming world plan. 

Within our guide below we will explore how much sugar you can have on the slimming world plan, the difference between the syn values of different types of sugar, as well as sweeteners as alternatives.

Let's get into it!

How Much Sugar Can You Eat On Slimming World?

Although sugar is low in syns, you have to be careful about how much you are consuming of it in moderation, just two tablespoons could give you 5 syns.

You also need to be careful if your put sugar in teas and coffees as this can add sneaky syns, all sugar should be tracked on the plan to have effective weight loss.

Sugar Syn Values

Sugar has similar syns no matter the type you use, but to help you out we've listed some popular sugar types down below along with their syn values.

  • Brown sugar - 2 syns per tablespoon.
  • White sugar - 2.5 syns per tablespoon.
  • Powdered sugar - 1.5 syns per tablespoon.
  • Raw sugar - 2 syns per tablespoon.

Should I Have Sweeteners Instead Of Sugar?

If you are looking to cut sugar from your diet to save syns, sweeteners can also be a great way to sweeten your drinks and food without any sugar.

Sweeteners are low in calories and SYN FREE on the slimming world plan, although there is some speculation about how good they are for you in comparison to sugar. Some people also say sweeteners can lead to craving more sugar than natural sugar does.

Overall, sugar and sweeteners are fine to consume within moderation but if you are looking to lose weight, the sweetener can be a great way to reduce extra calories and syns from your diet.

Low Syn Alternatives To Sugar

If you are looking for a lower syn alternative to sugar there are plenty of options out there, from natural sweeteners such as honey to sweeteners such as sucrose.

Below we've listed our best low syn alternatives to sugar below.

  • Tesco Granulated Sweetener Sucralose 75G - SYN FREE.
  • Tesco Golden Syrup 680G - 2.5 syns.
  • Groovy Food Agave Light And Mild 250Ml - 0.5 syns per teaspoon.
  • Silverspoon Tablet Sweetener 400Pk - SYN FREE.
  • Tesco Pure Set Honey 454G - 2.5 syns per tablespoon.
  • Purevia Caster Sugar Alternative 370G - SYN FREE.
  • Splenda Low-Calorie Sweetener Granulated 125G - SYN FREE.
  • Tesco Squeezy Honey 340G - 2.5 syns per tablespoon.
  • Coconut sugar - 1 syns a teaspoon.

Final Words

To conclude, sugar has one syn per teaspoon making it low in syns, it should however be consumed within moderation, especially in drinks to avoid going over your syn allowance. If you are looking to lower your calorie consumption, sweeteners can also be a great option to switch to from sugar.

Frequently Asked Questions

How are syn values calculated?

Syn values are calculated using a formula based on calories, saturated fat and sugar content per serving. They’re not the same as calories — a product can be low in calories but higher in syns if it’s high in sugar or fat. Always check the official Slimming World app for the most accurate and up-to-date syn values.

Do syn values change?

Yes. When manufacturers reformulate their products, the syn value can go up or down. This is why we recommend double-checking with the Slimming World app or your consultant, especially if a product’s packaging has changed recently.

How many syns should I have per day?

Most Slimming World members work with 5 to 15 syns per day. Your consultant will advise on the right amount for you. The key is to use your syns on the things you enjoy most — whether that’s a chocolate bar, a glass of wine, or a packet of crisps.

Jennifer
Jennifer is a certified nutritionist and weight loss coach with a Master's in Nutrition from Cambridge. With over 10 years experience, she shares healthy recipes and science-backed slimming tips on SheCooksSheEats to help people reach their wellness goals. Jennifer stays up-to-date by regularly attending conferences and continuing her nutrition education. She aims to provide research-backed advice to inspire balanced, happy living.
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