V60 Filter Sizes: 01 vs 02 vs 03 (and Why Melitta Filters Don't Fit)

V60 filter sizing is genuinely simple and almost everyone still gets it wrong once. The rule is that the number on the filter box must match the number on the dripper — 01 dripper takes 01 filters, 02 takes 02, 03 takes 03. There is no clever substitution. An oversized filter folds over the rim and channels water past the coffee bed entirely; an undersized one sits low in the cone, exposes the plastic ribs, and lets fines straight through into the cup.

Where it gets confusing is that Hario prints the number small, sells four variants of each size, and the sizes look nearly identical stacked flat in a bag. So here is the whole matrix in one place.

What each size actually holds

• 01: brews roughly 1–2 cups, about 8–12 oz / 240–360 ml finished. Dose range around 10–18 g. The solo dripper.
• 02: brews roughly 1–4 cups, about 12–20 oz / 360–600 ml finished. Dose range around 15–30 g. The default, and the size to buy if you own one V60.
• 03: brews roughly 4–6 cups, up to about 30 oz / 900 ml. Dose 30 g and up. Uncommon, and the filters are noticeably harder to find in stock.
• All three share the same 60-degree cone angle — that is what the '60' in V60 means. Only the scale changes.

The practical consequence of the 02 range is that most people never need another size. A 02 brews a single 12 oz mug perfectly well and still handles a 600 ml batch for two. The 01 is only correct if you exclusively brew one small cup and want the faster, more forgiving drawdown of a smaller bed. Buying the 03 for headroom is the same mistake as buying a 9-cup moka pot: you brew what you brew every day, not what you might brew at a dinner party.

The near-miss that ruins brews: Melitta cones are not V60 cones

This is the single most common V60 filter error and it is easy to make, because a Melitta #2 or #4 filter is also a cone, is also paper, and sits on the same shelf. But Melitta filters are a wedge — a flat-bottomed trapezoid with a seam down one side, designed for a dripper with a small flat base. A V60 is a true 60-degree cone with a single large hole. Put a Melitta wedge in a V60 and the flat bottom bridges across the hole, the seam buckles, and the drawdown either stalls or blows out down one side. The two are not interchangeable in either direction.

Tabbed or untabbed, white or natural

• Tabbed: a small paper pull-tab. Slightly easier to lift the spent puck out. No brewing difference.
• Untabbed: marginally cheaper, packs flatter. No brewing difference.
• White (bleached): oxygen-bleached, not chlorine. Rinses clean in a few seconds and contributes essentially no paper taste.
• Natural (brown, unbleached): needs a longer, hotter rinse — 15–20 seconds of just-off-boil water — or it will put a distinct cardboard note in the cup. Choose it for the environmental angle, not the flavor.

If you have ever tasted paper in a pour-over and blamed your beans, the culprit was almost certainly an under-rinsed natural filter. White filters are the lower-effort default and what most cafés use.