Baths by size (1500–1800mm)

What length of bath fits your bathroom?

If you already know your fitting limit, this is the page to start from. Most people shopping for a bath in an existing space have one number that matters more than any other: the length of the gap the bath has to fit. Rather than browsing by type or style and checking the size last, you can shop by the exact millimetre band first, then narrow by type and material within it. UK baths run from 1500mm to 1800mm in standard bands, and this page lets you navigate straight to the length that fits, with a quick guide to which length suits which room and a reminder to measure properly before you order a bulky product.

Shop by length

The standard UK bath length bands, and what each typically suits:

Length	Typically suits
1500mm	Small bathrooms and ensuites; compact straight and corner baths
1600mm	Compact family bathrooms where 1700mm won't quite fit
1660–1700mm	The UK standard; most family and main bathrooms
1800mm	Larger bathrooms and taller users wanting full-length soaking

Widths run mostly 700mm, up to around 800mm on larger and double-ended models. The length bands are the primary navigation; once you've found the band that fits your space, filter by type (straight, shower, single or double ended) and material within it.

Which length for which room?

Matching length to room comes down to the space you have and how you'll use the bath:

• Small bathroom or ensuite: 1500mm, or a deep compact tub if you want a fuller soak in a short footprint. Below 1500mm starts to feel cramped for an adult.
• Compact family bathroom: 1600mm, which fits where a 1700mm bath won't and still gives a comfortable bathe.
• Standard family or main bathroom: 1700mm, the UK standard, comfortable for most adults and the size most bathrooms are designed around.
• Larger bathroom or taller users: 1800mm, for full-length soaking room where the space allows.

For short lengths and deep compact options, see small & compact baths.

Measure before you buy

Shopping by size only works if your size is right, and a bath is the most expensive thing to get wrong because it's bulky and hard to return. Before ordering, measure four things: the longest clear wall run (your maximum length), the width the bath can project into the room, the waste-pipe position, and the clearance for the door swing and any radiator. Then choose the nearest standard length down from your maximum, never up. Measuring takes a few minutes and removes nearly all the risk from a large purchase.

For the full measuring method and worked examples, read the bath size guide & standard dimensions.

Size FAQs

I know my bathroom fits a 1600mm bath. Can I shop straight by that size?

Yes, that's exactly what this page is for. Navigate to the 1600mm band and you'll see the baths available at that length, then filter by type (straight, shower, single or double ended) and material to narrow down. Shopping by your known fitting length first is the most efficient way to choose when the size is your binding constraint, rather than finding a bath you like and discovering the size is wrong. Just double-check the width and waste position against your space before ordering.

What sizes do baths come in?

Standard UK baths run from 1500mm to 1800mm long, with 1700mm the most common, at widths from around 700mm up to 800mm. The usual length bands are 1500, 1600, 1660, 1700, and 1800mm. Compact and small baths go shorter than 1500mm, trading length for a smaller footprint, sometimes with extra depth to keep the soak. Within any length band you'll find different types and materials, so the size narrows the field and the type and material choices follow.

My gap is an awkward size between two standard lengths. What do I do?

Always size down to the nearest standard length that fits, never up. If your gap is 1,680mm, a 1700mm bath won't fit, so choose a 1600mm bath, which leaves clearance for fitting and tiling. The small gap between the bath and the wall is normal and easily finished with a panel or sealant; a bath forced into too tight a space isn't. When a gap falls awkwardly between standard sizes, the smaller standard length is always the safe choice.

Navigate by length above, then filter by type and material. For the measuring method, see the bath size guide, or return to the baths hub.

Plumbworld has supplied UK baths since 1999, with a 4.8/5 rating from over 60,000 Trustpilot reviews, free UK delivery, a price match promise, and 365-day returns.

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