Rice to Water Ratio Calculator

Why rice ratios aren't one-size-fits-all

Every rice type has a different water absorption because the grains differ in length, starch composition, and how much of the bran layer is intact. Long-grain whites like jasmine and basmati are relatively dry grains with a high amylose content — they cook up fluffy and separate at around 1.5 cups of water per cup of rice. Short-grain sushi rice is stickier and needs less water; brown rice keeps its fibrous bran and needs much more. Arborio is a special case: you're not steaming it, you're coaxing starch out of it into a creamy sauce, so the "ratio" is really a slowly-added stock volume rather than a fixed amount of absorbed water.

Stovetop vs. rice cooker — why the numbers differ

A rice cooker seals in more steam than a lidded pot, so it loses less water to evaporation. That's why rice-cooker ratios are almost always lower than stovetop ratios — typically 1.25 cups of water per cup of rice for jasmine in a cooker, versus 1.5 cups on the stovetop. If you translate a stovetop recipe straight into a cooker with no adjustment you'll end up with slightly soggy rice; going the other direction produces rice that scorches on the bottom before the grains hydrate.

The other variable that trips people up is pot lid fit. A heavy, tightly-fitting lid on the stovetop pushes the results toward the rice-cooker end of the scale. A loose lid or a wide, shallow pan behaves the other way. If your stovetop rice consistently comes out gummy, try 2 tablespoons less water per cup; if it's crunchy at the end, add 2 tablespoons more.

Rinsing, soaking, and why sushi rice is fussy

Rinsing rice washes off surface starch that would otherwise gum the grains together. For jasmine and long-grain white rice, two or three rinses in a fine mesh strainer are enough. Basmati benefits from a longer soak — 20 to 30 minutes in cold water lets the long grains hydrate evenly so they don't crack on the outside before the middle is cooked. Sushi rice needs the most rinsing of any: keep changing the water until it runs almost clear, otherwise the finished rice will be too sticky and cloudy to season with vinegar. Arborio is the exception — do not rinse it, ever. The starch on the outside of the grain is what makes risotto creamy.

Resting matters as much as simmering

After the timer goes off, leave the pot covered off the heat for a full ten minutes. During that rest, residual steam finishes cooking the top layer of rice and moisture redistributes evenly through the pot. Skipping the rest is the single most common reason home cooks end up with wet rice on top and dried-out rice on the bottom. Once the rest is up, fluff gently with a fork — never a spoon, which mashes the grains.

How much cooked rice per person

Plan on about half a cup of cooked rice per person as a side dish, and one cup per person as the base of a main course such as curry, stir-fry, or rice bowls. A cup of dry rice yields roughly three cups cooked (a bit less for short-grain), so a cup of dry jasmine feeds six as a side or three as a main. If you're serving carb-hungry teenagers or planning for leftovers, add another quarter cup of dry per person.