Sugar hides in far more foods and drinks than most of us realise, and gram figures on a label don't always mean much at a glance. Teaspoons, on the other hand, are something we can actually picture. Here's a practical breakdown of how much sugar is really in everyday foods and drinks, in teaspoons rather than grams.
How Many Grams of Sugar Is a Teaspoon?
One level teaspoon of granulated sugar is approximately 4g, and provides around 16 calories. This is the standard conversion used across most nutrition guidance, and it's the figure we'll use throughout this article to convert gram values into teaspoons.
How Much Sugar Should You Have a Day?
UK guidelines recommend keeping "free sugar" intake (added sugars, plus sugars in honey, syrups and fruit juice) to no more than around 30g a day for the average adult – roughly 7 to 7½ teaspoons. Children over 11 generally follow the same guidance as adults. Naturally occurring sugars in whole fruit, vegetables and plain dairy don't count toward this limit, since they come packaged with fibre, vitamins and minerals that change how the body processes them.
How Many Teaspoons of Sugar Are in Common Foods and Drinks?
Here's how some everyday items stack up, using the 4g-per-teaspoon conversion:
| Food or Drink | Approx. Sugar (g) | Approx. Teaspoons |
|---|---|---|
| Can of cola (330ml) | 35g | ~9 tsp |
| Standard chocolate bar | 25g | ~6 tsp |
| Glass of fruit juice (150ml) | 12g | ~3 tsp |
| Flavoured yoghurt (single pot) | 10-15g | ~2½-4 tsp |
| Sweetened breakfast cereal (30g bowl) | 8-12g | ~2-3 tsp |
| Tablespoon of ketchup | 4g | ~1 tsp |
| Tablespoon of honey | 17g | ~4 tsp |
| Energy drink (250ml can) | 27g | ~7 tsp |
| Flavoured coffee shop drink (large, syrup-based) | 30-50g+ | ~7½-12½+ tsp |
These figures are approximate and vary by brand, so it's always worth checking the actual label where possible – but the pattern is consistent: a single flavoured coffee or energy drink can meet or exceed the entire daily free sugar guideline in one go.
Why Teaspoons Are a Useful Way to Think About Sugar
Grams on a label don't always translate into something we can picture, but most of us have a rough sense of what a teaspoon of sugar looks like stirred into a cup of tea. Converting label figures into teaspoons can make it easier to spot when a product is genuinely high in sugar, rather than relying on gram numbers that can feel abstract.
Watching Hidden Sugar in "Healthy" Foods
Sugar isn't always where you'd expect it. Foods marketed as healthy – granola, flavoured yoghurts, smoothies, some sauces and dressings – can carry a surprising amount of free sugar. It's worth checking labels on these specifically, rather than assuming "healthy-sounding" automatically means low in sugar. Our guide to reading sugar labelling terms like "no added sugar" and "unsweetened" covers this in more detail.
If You're Cutting Back on Sugar
- Swap sugary drinks for water, herbal tea, or a no-added-sugar alternative
- Choose plain yoghurt and add your own fresh fruit rather than buying flavoured varieties
- Check labels on sauces and dressings, which often carry more sugar than expected
- Be mindful of "healthy" snack bars and granolas, which can be surprisingly high in free sugar
If you suspect sugar itself might be triggering symptoms beyond general dietary concerns – bloating, digestive discomfort, or other recurring issues after sugary foods – it's worth understanding the signs of a genuine sugar intolerance, which is a different issue from general sugar consumption guidance. Our food intolerance test can help identify whether that's genuinely behind your symptoms.
