Rice Cup & Water Calculator
Calculate rice and water amounts from go (合) and firmness (firm/normal/soft). It also shows grams, water (ml), cooked yield and rough servings together. Everything stays in your browser.
| Rice (approx. weight) | — |
|---|---|
| Water | — |
| Cooked yield (approx.) | — |
| Servings | — |
How to use
Enter the number of go or pick an example chip (1/2/3 go). Choose firmness (normal/firm/soft) and the rice (ml and g), water (ml), cooked weight and rough serving count all update together. For new-crop or rinse-free rice, nudge the firmness one step.
What is a go (合)?
In Japan, uncooked rice is measured by volume in go (合), not by weight. One go is 180 ml — the size of the plastic cup that comes with every rice cooker — so "2 go" means two level cups. This is smaller than the 240 ml US cup, and rice-cooker water lines are marked by go as well. This calculator uses the Japanese go, sets water to the same volume as the rice (the usual rice-to-water starting point), then adjusts it up or down for the firmness you want.
Worked examples
- 1 go, normal → 180 ml rice (≈150 g) / 180 ml water / ≈330 g cooked / 1–2 servings
- 2 go, normal → 360 ml rice (≈300 g) / 360 ml water / ≈660 g cooked / 2–4 servings
- 3 go, firm (0.9) → 540 ml rice / 486 ml water (less than normal for a firmer bite)
- 2 go, soft (1.1) → 360 ml rice / 396 ml water (for rinse-free rice or softer texture)