Posted by Mia Wren on 13th Apr 2026

What Size Is a 2lb Loaf Tin? UK Sizes + Which One Your Recipe Needs

A 2lb loaf tin measures roughly 25 x 12.5 x 8 cm (10 x 5 x 3 inches) and holds about 1.5 litres of batter or dough — enough for a family-sized loaf of eight to ten slices. The "2lb" refers to the weight of dough the tin is designed to hold, not a fixed set of dimensions, which is why sizes vary slightly from one brand to the next.

If you're standing in the kitchen with a recipe that says "2lb loaf tin" and no idea whether the tin in your cupboard counts, this is the page that sorts it out. Here are the standard UK sizes, how 1lb and 2lb compare, and how to tell what you've actually got.

2lb vs 1lb loaf tin: the standard UK sizes

The two sizes you'll see on almost every UK recipe are 1lb and 2lb. Here's how they compare:

	1lb loaf tin	2lb loaf tin
Top opening (approx.)	16 x 10 cm	21 x 11 cm
Overall length (incl. rim)	~19 cm (7.5 in)	~25 cm (10 in)
Depth	~6.5 cm	~8 cm (3 in)
Capacity	~0.8 litres	~1.5 litres
Slices from a loaf	4–6	8–10

A few millimetres either way is normal — these are nominal sizes, not exact ones. The Wrenbury 2lb tin, for example, measures 25 x 12.5 x 8 cm including the rim. What stays consistent is the capacity: a 2lb tin holds roughly 1.5 litres, which is the number that actually matters when you're matching a tin to a recipe.

Why it's called a "2lb" loaf tin

The name throws people, because nothing about the tin weighs 2lb. The "2lb" is the approximate weight of the finished loaf — or, more usefully, the weight of dough the tin is built to hold. A 2lb tin takes around 900g of dough; a 1lb tin takes roughly half that.

This is why two 2lb tins from different makers can look slightly different yet still both be "2lb". They're rated by capacity, not by a tape measure. If a recipe gives you a dough or batter weight, that's the most reliable way to pick the right tin — closer to 900g, reach for the 2lb; closer to 450g, the 1lb.

How much mixture does a 2lb loaf tin take?

As a working rule, a 2lb tin takes a mixture made with about 500g of flour for bread, or a cake batter using roughly 3–4 eggs' worth of mixture. Fill it no more than two-thirds full and leave room for the rise — overfilling is the usual reason a loaf domes, splits down the side, or spills over the rim.

If you've only got a 1lb tin and a 2lb recipe, you can split the mixture across two 1lb tins and shorten the bake by about ten minutes, since smaller loaves cook faster. It's a handy trick for banana bread and tea loaves in particular.

Will a 2lb loaf tin fit my oven — or my air fryer?

In a standard UK oven, yes — a 2lb tin at about 25 cm long sits comfortably on the rack with room to spare. The place people come unstuck is the air fryer. A 2lb tin is usually too long to fit an air fryer basket; for air fryer baking you want a 1lb loaf tin, which is sized to drop into most baskets. Our 1lb loaf tin size guide has the full dimensions, and our guide to banana bread in the air fryer walks through the method in detail.

If you bake regularly across both sizes, the 1lb and 2lb set gives you both for less than buying them separately, and you can browse the full loaf tin range if you want to compare. Not sure which to commit to? Our guide to the best loaf tin in the UK covers materials, gauge and what's worth paying for.

How to tell what size your tin is

If your tin is unmarked, measure the length along the top from inside edge to inside edge, or do the water test: fill it to the brim with water, then tip that into a measuring jug. Around 0.8 litres means you've got a 1lb tin; around 1.5 litres means it's a 2lb. The water test is the most reliable, because it measures the one thing that actually matters — capacity.

Frequently asked questions

What are the dimensions of a 2lb loaf tin?

A 2lb loaf tin is approximately 25 x 12.5 x 8 cm (10 x 5 x 3 inches) including the rim, with a top opening of roughly 21 x 11 cm. Expect small variations between brands, since tins are rated by the weight of dough they hold rather than by exact measurements.

How much does a 2lb loaf tin hold?

About 1.5 litres of batter or dough — roughly 900g of bread dough, or a cake mixture made with around 500g of flour. Fill it no more than two-thirds full to leave room for the rise.

What's the difference between a 1lb and a 2lb loaf tin?

A 1lb tin is about 19 cm long and holds roughly 0.8 litres, giving four to six slices. A 2lb tin is about 25 cm long and holds roughly 1.5 litres, giving eight to ten. The 2lb is the standard family size; the 1lb suits smaller loaves and fits most air fryer baskets.

Why is it called a 2lb loaf tin?

The "2lb" is the approximate weight of dough the tin holds, not the weight of the tin itself. A 2lb tin takes around 900g of dough, a 1lb tin around half that. Tins are sized by capacity, which is why dimensions differ slightly between makers.

Will a 2lb loaf tin fit in an air fryer?

Usually not — at around 25 cm long, a 2lb tin is too big for most air fryer baskets. For air fryer baking, use a 1lb loaf tin, which is sized to fit the majority of baskets.

Is a 900g loaf tin the same as a 2lb loaf tin?

Yes. 2lb is 907g, so "900g loaf tin" and "2lb loaf tin" are metric and imperial names for the same size, just as a 450g tin is a 1lb. Recipes use the two interchangeably.