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Food quiz
Five quick nutrition questions with the answers explained.
Five quick questions
Have a guess, then open each answer. These are well-established nutrition basics.
Which packs more calories per gram — protein or fat?
Fat, by more than double: fat has about 9 calories per gram, while protein and carbohydrate each have about 4. That is why a little oil adds up fast.
Roughly how many calories are in a level teaspoon of sugar?
About 16 calories. A 330 ml can of regular cola contains roughly 35 g of sugar — around nine teaspoons.
Which has more fibre — a whole apple or a glass of apple juice?
The whole apple. Juicing removes most of the fibre and concentrates the sugar, so whole fruit keeps you fuller for longer.
How many calories per gram does alcohol provide?
About 7 calories per gram — closer to fat than to sugar, and with no useful nutrients, which is why drinks add up quickly.
Does "low fat" always mean fewer calories?
Not necessarily. Low-fat foods often add sugar to keep the taste, so they can carry as many calories as the full-fat version. Always check the number.
Calorie cheat sheet
Approximate calories for common foods. Values are rounded and vary by brand and portion.
| Food | Calories (approx) |
|---|---|
| Apple, medium | 95 |
| Banana, medium | 105 |
| Boiled egg | 78 |
| Slice of white bread | 75 |
| Plain croissant | 230 |
| Glazed doughnut | 260 |
| Slice of pizza | 285 |
| Cup of cooked white rice | 205 |
| Chicken breast, 100 g | 165 |
| Can of cola, 330 ml | 139 |
| Medium fries | 365 |
| Tablespoon of olive oil | 119 |
| Half an avocado | 160 |
| Plain bagel | 245 |
| Handful of almonds, 28 g | 164 |
More games
Guess the calories
A food appears — guess its calories and see how close you got.
Higher or lower
Two foods, one question: which one has more calories?
Source: Calorie and nutrition figures are rounded approximations from standard references. · checked 2026-09-04
Frequently asked questions
Is this free?
Yes — no account, no sign-in, nothing stored. It runs entirely in your browser.
How accurate are the numbers?
The calorie values are rounded approximations for everyday portions and vary by brand and preparation.
Track it for real
TempoLife logs meals in seconds and does the calorie maths for you.