hintsandthings.co.uk »Kitchen

Baking tin and sizes with equivalents between square and round tins and capacity conversions

Recipe says to use an 8 inch round tin but you only have square tins- what size should you use?

We have all been faced with this dilemma and as the size of tin is an important factor when cooking a cake it is useful to know the approximate equivalent when using a different shape tin.

In view of this I am often being asked for conversion tables for baking utensils so here is a chart showing a few of the most common.

TIP for baking tin

The thing to bear in mind is that the capacity of a
round tin is roughly equal to a square tin which is 2.5 cms or 1″ smaller (although
this formula does not appear to apply to the smaller sizes).






Metric (Imperial)

Metric (Imperial)

Metric (Imperial)
800 ml (1.1/2pint basin) 



140 mm (5 1/2″) 



1.1 litres (2 pints)


180 mm (7 in)


125 mm (5 in)
1.2 litre (2 pint basin)=150 mm (6 in deep)=125 mm (5in deep)
1.7 litres (3 pints)=200 mm (8 in)=180 mm (7 in)
2.3 litres (4 pints) =230 mm (9 in)=200 mm (8 in)
3.4 litres (6 pints)=250 mm (10 in)=230 mm (9 in)
4.5 litres (8 pints)=280 mm (11 in)=250 mm (10 in)
5.7 litres (10 pints)=300 mm (12 in)=280 mm (11 in)
1 kg. (2lb) loaf tin==180 mm (7 in) shallow tin
or130 mm x 230 mm (9 in) swiss roll tin


When using recipes online you
can be faced with unfamiliar tin sizes used in other parts of the world so,
hopefully, the following chart which shows the
equivalent American metric tins to various Imperial baking tins and
casseroles will prove useful.



American metric
8 x 1.1/2 inch round baking tin20cm x 4cm cake tin
9 x 1.1/2 inch round baking tin23cm x 3.5cm cake tin
11 x 7 x1.1/2 inch baking tin28cm x 18cm x 4cm baking tin
13 x 9 x 2 inch baking tin230cm x 20cm x 3cm baking tin
2 quart rectangular baking dish30cm x 20cm x 3cm baking tin
15 x 10 x 2 inch baking tin30cm x 25cm x 2cm baking tin
9 inch pie plate22cm x 4cm or 23cm x 4cm pie plate
7 or 8 inch springform tin18cm  or 20cm springform of loose bottom cake
9 x 5 x 3 inch loaf tin23cm x 13cm x 7cm or 2lb. (pound) narrow loaf tin or
pate tin
1.1/2 quart casserole 1.5 litre casserole
2 quart casserole2 litre casserole