15 cm / 6 in round tin
177 cm² · 0.9 litres
15 cm across · 27.4 in² · 50 mm deep · round
About this tin
A small round, used for a single tall layer or a cake for four. It is the size most often meant by "a small cake tin" and holds about a third of what a 23 cm tin does.
The numbers
| Diameter | 15 cm · 5.9 in |
| Depth | 50 mm · 2.0 in |
| Base area | 177 cm² · 27.4 in² |
| Volume to the rim | 0.9 litres |
| Usable batter | about 0.5 litres — filled to roughly two thirds |
Frequently asked questions
What is the area of a 15 cm / 6 in round tin?
177 cm² (27.4 in²), holding roughly 0.9 litres filled to 50 mm.
What can I substitute for a 15 cm / 6 in round?
Nothing in this list is within a third of its area, so a recipe written for it needs the quantity scaled rather than the tin swapped.
How much does a 15 cm / 6 in round tin hold?
About 0.9 litres to a depth of 50 mm. Cake batter is normally filled to between half and two thirds, so 0.5 litres of mixture is a working figure.
Why does tin size change the baking time?
Because a recipe is written for a depth, not a name. Heat reaches the centre of a shallow cake sooner, so the same mixture in a wider tin is done earlier and browns more at the edges. The area ratio tells you how much shallower: divide the two areas and the depth changes by the inverse.
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