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Updated Measurements & Conversions
| Tablespoons | Cups |
|---|---|
| 4 tbsp | 1/4 cup |
| 5 tbsp + 1 tsp | 1/3 cup |
| 8 tbsp | 1/2 cup |
| 12 tbsp | 3/4 cup |
| 16 tbsp | 1 cup |
How to remember it: 16 tablespoons make a cup, so 8 is half and 4 is a quarter. From there most recipe amounts are easy to eyeball.
Butter tip: in the US a stick of butter is 8 tablespoons = 1/2 cup, and the wrapper is usually marked in tablespoons, so you can slice exactly what you need.
A note on tablespoons vs teaspoons: there are 3 teaspoons in 1 tablespoon, so 8 tablespoons is also 24 teaspoons — but for a half cup you'll always just measure the 8 tablespoons or use a 1/2-cup scoop.
The closest sibling pages are How Many Grams Are in a Cup? and How Many Inches Is 6 Feet?.
See Measurements & Conversions for other answers in this topic, or start from more researched answers.