Are Tinned Tomatoes Syn Free? Find Out Here!

Updated on 
17 March, 2022

Do Tinned Tomatoes Have Syns On Slimming World?

Fresh tomatoes are syn free on the slimming world plan meaning you can eat as much of them as you want but are tinned tomatoes?

Tinned tomatoes are indeed syn free on slimming world, but if they have any mix-ins such as oil, you will then need to syn them.

Down below in our guide we will discuss which tinned tomatoes are not syn free as well as some syn values of other tomato products, we will also discuss if all tinned veg is syn free and how to make your SW tomato sauce.

Which Type Of Tinned Tomatoes Have Syns?

Nearly all kinds of tinned tomatoes are syn free on slimming world, whether we're talking plum tinned tomatoes or chopped tin tomatoes in their juice. Tinned tomatoes which do have syns are typically ones with additions inside such as herbs, garlic and oil, these would then need to be synned.

Syn Values Of General Tomato Products

Tinned tomatoes syn free, but what about puree and sauce? We've listed some other syn values of tomato products down below to help you out.

  • Napolina Chopped Tomatoes & Garlic 400G - 2 syns.
  • Tesco Chopped Tomatoes With Chilli 390G - 2 syns.
  • Tesco Chopped Tomatoes With Basil 390G - 2 syns.
  • Tesco Tomato Puree With Herbs 135G - 0.5 syns.
  • Tesco Tomato Puree With Chilli 135G - 0.5 syns.
  • Belazu Balsamic Sun Dried Tomato Paste 130G - 8 syns for 100g.
  • Heinz Top Down Tomato Ketchup 910G - 1 syn.
  • Tiptree Tomato Sauce 310G - 1.5 syns.

Is All Tinned Veg Syn Free?

Since tinned tomatoes are syn free you might be wondering if another tinned veg is also free? Most tinned vegetables are syn free as long as they are only tinned in water, any veg which is tinned with oil should be synned.

Pickled veg is also syn free on slimming world.

How To Make Your Own SW Tomato Sauce

To make use of your syn free tinned tomatoes, we've put together a recipe below which will show you how to make your own slimming world pasta sauce which is SYN FREE!


  • Low cal cooking spray.
  • Three spoons of tomato puree.
  • 2 garlic cloves and two onions chopped.
  • One can of chopped tomatoes.
  • Pinch of oregano and basil.
  • One veg stock cube.
  • Spoon of red wine vinegar.
  • Three spoons of fat-free Greek yoghurt.
  • Two pinches of sweetener.


  1. To begin spray your frying pan with some low cal cooking spray and bring it to medium heat.
  2. Throw in your onion plus around 50 ml of water and cook for 10 minutes, add more water if the pan starts to get dry.
  3. Now stir in your chopped tomatoes, garlic, stock, oregano, puree and vinegar as well as 125ml of boiling water into the pan.
  4. Simmer for 15-20 minutes until your sauce has started to thicken add your basil in and serve!

Final Words

To conclude, tinned tomatoes are syn free on the slimming world plan, but you should always check that your tins do not contain any extra ingredients such as oil and herbs otherwise you need to syn them. Rather than buying a pre-made tomato sauce at the shop, we would suggest making your own with tinned tomatoes shown in our recipe above to save syns.

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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