Snooker Balls vs Pool Balls: Sizes & Sets Explained

Buy the wrong set of balls and nothing on your table plays the way it should. The cue ball rattles in pockets that were cut for something smaller, the triangle doesn't fit, and a pub-style pool set looks lost on a snooker bed. The culprit is almost always size — snooker and pool balls are not interchangeable, and even within pool there are two common diameters. Here's exactly what the differences are, what each set contains, and how to match balls to your table.

The sizes that actually matter

Snooker uses the smallest balls of the three disciplines. Full-size, tournament-standard snooker balls measure 2 1/16in (52.5mm). That diameter is tuned to professional 12ft tables with tight pocket openings, which is why the game rewards such precise potting.

Pool is where it gets confusing, because there are two widely sold sizes:

• 2in (50.8mm) — the classic British/English pool ball, used with reds and yellows on pub and home 6ft and 7ft tables.
• 2 1/4in (57.2mm) — the American pool size, used with the numbered/striped balls you see on US 7ft, 8ft and 9ft tables.

So the cue balls differ too. English pool typically uses a slightly smaller or matched cue ball to the 2in objects, while American pool runs a full 57.2mm cue ball like Tournament Cue Ball 57.2mm Billiard Training Accessory Resin Practice Ball For Black Eight Pool Sports Durable Quality. If your spare cue ball feels wrong against the pack, size mismatch is usually why.

What's actually in each set

Set contents are dictated by the game, not just the size:

• Snooker: 22 balls — 15 reds, 6 colours (yellow, green, brown, blue, pink, black) and 1 white cue ball. A full 22-ball set is what you want for the proper game.
• English/American pool (reds & yellows): 16 balls — 7 reds, 7 yellows, 1 black and 1 cue ball. This is the standard UK pub format.
• American numbered pool: 16 balls — 7 solids, 7 stripes, the 8 ball and a cue ball.

You'll also see 17-ball snooker sets, which drop the red count down to 10 reds plus the 6 colours and cue ball. These are a budget- and space-friendly option for smaller home tables where a full 15-red pack won't rack cleanly. The Snooker 17 Ball 2" Set is exactly this kind of reduced set, sized at 2in to suit compact home snooker.

Matching balls to your table

The golden rule: match ball diameter to the pockets your table was cut for. A few quick pointers:

Full-size snooker table (10ft–12ft)

Go for 2 1/16in balls. The PowerGlide Snooker Ball Set is a sensible, affordable choice for home players who want the correct game without professional-tournament pricing.

Compact home snooker (6ft–8ft)

A 2in set — whether a full 22-ball or the economical 17-ball version — racks and pots better on tighter beds. These are the imported resin sets most home players buy, and they play perfectly well for casual frames.

British pub-style pool (6ft–7ft)

Reds and yellows at 2in. If you want a noticeable step up in roundness and consistency, the ARAMITH SUPER PRO CUP 2" REDS & YELLOWS POOL BALL SET** is a genuine quality jump — Aramith is the brand most leagues and clubs trust.

American-style pool (7ft+)

2 1/4in numbered balls. The PowerGlide Pool Ball Set covers the classic solids-and-stripes game for home setups.

Set comparison at a glance

Don't forget the triangle

Racks are sized to the balls, not the table. A triangle cut for 2 1/4in American balls will leave 2in pool or snooker balls loose and the pack won't form up tightly. If you're running a 2in set, the Plastic triangle for snooker / pool - for 15 x 2in balls is the correct size for a 15-red snooker pack or a reds-and-yellows frame. Buy the rack to match your balls and you'll get clean, consistent breaks every time.

A quick word on materials and expectations

Most budget-friendly sets are cast from resin or phenolic-style compounds and are made overseas. They're perfectly good for home and casual play — round enough, consistent enough, and keen on the price. The step up to premium phenolic sets like Aramith buys you tighter diameter tolerances, better balance and longer life before they go off-round. If you only play socially, an affordable set is all you need; if you're practising seriously or running a club table, the upgrade is worth it.

The bottom line

Snooker is 2 1/16in, English pool is 2in, American pool is 2 1/4in — and those differences decide how balls sit in the pockets and the rack. Pick the diameter your table was built for, choose a full or reduced set based on space, and match your triangle to the balls. Get those three things right and your table will finally play the way it was meant to.