Hario V60 Coffee Ratio

The Hario V60's spiral ribs and single large drainage hole let water pass through faster than almost any other dripper, which is exactly why its ratio window is narrower than most. Balanced sits at 1:15, and the whole usable range only stretches from 1:14 on the strong side to 1:16 on the light side — a two-point spread, against French press's five-point range or Chemex's three. There's simply less contact time available for a dosing error to get lost in.

What a 20g dose looks like at each setting

At 1:15, a 20g dose calls for 300ml of water. At 1:14, 280ml, for a fuller-bodied cup from the same coffee. At 1:16, 320ml, for something lighter and more tea-like. The gap between adjacent settings — 20ml either way — is smaller than the equivalent step on a wider-range method, which is part of why V60 recipes tend to specify exact water weights rather than "a bit more" or "a bit less."

Sizing up from a single mug

V60 drippers come in sized cones — a 01 built around a single 20g dose like the numbers above, a 02 comfortably handling up to about 30g and 450-480ml at the same ratios. Scaling the dose up without sizing up the cone crowds the bed against the cone's walls and slows drainage more than the ratio alone would predict, which reads as an unexpectedly bitter cup from a recipe that should have worked. Match the dose to the cone size before troubleshooting anything else.

Why the window is tight instead of wide

Because the single large hole drains fast, a V60 gives water comparatively little time in contact with the grounds no matter how you pour — which means the ratio has to do more of the flavor work than it does on a slower-draining dripper, and there's less slack in the recipe to correct for it. Push much past 1:16 and the cup tends to read thin rather than gently light; push much past 1:14 and it turns syrupy rather than pleasantly full, faster than the same moves would on a slower-draining brewer.

Adjusting within the window

Move to 1:14 for a darker roast, when serving with milk, or if 1:15 has tasted thin to you specifically. Move to 1:16 for a light, bright single origin you want to taste delicately rather than boldly. The ratio calculator works out any dose or water amount within this range, or scaled to a 02 cone's larger batch size.

When the ratio isn't actually the issue

A V60 that drains in under two minutes or drags past four, regardless of which of these three ratios you used, is a grind and pour-technique problem, not a ratio one — see fast drawdown and slow drawdown. A cup that tastes correct in strength but wrong in a specific way — sour, bitter, muddy — points the same direction.

Metal versus paper, briefly

A reusable metal filter in a V60 lets more oils and fine sediment through than the paper Hario sells for it, which changes body enough that the same ratio can taste subtly fuller with metal — worth knowing if you switch filter types and a familiar recipe suddenly tastes different without you having touched the dose, water, or grind at all.

Pour staging and bloom timing are covered on the full pour-over guide; for how a flatter bed changes this same underlying idea, the Kalita Wave guide picks up where this page leaves off.