An Instant Pot is a sealed vessel. Nothing boils off, so the water you pour in is the water the rice has to live with — which is the entire reason the number is so much lower than the stove's. Copy a stovetop ratio into this pot and you will be draining starch water off a mushy batch.
What cooks who use these every week actually do
| Cook | What they do | Water per 1 cup rice | Time |
|---|---|---|---|
| One cook (white rice) | "the ratio I use for my rice is one to 1.25 — one cup of white rice, one and a quarter cup of water"; does not rinse this rice | 1 : 1.25 | 3 min high pressure + 10 min natural release |
| Another cook (white and brown) | "we use a 1 to 1 ratio — for every cup of rice we use one cup of liquid"; rinses the rice first | 1 : 1 | 3 min for white, 22 min for brown, full natural release |
| A third cook (single portion, pot-in-pot) | "for basmati rice we're going to do one to one — half a cup of rice, half a cup of water"; cooks the rice in a bowl set above 1 1/2 cups of water in the pot | 1 : 1 | 3 min high pressure + 10 min natural release |
Three cooks, two numbers, and the gap is not a contradiction — it is how soft they want the rice and whether they rinsed. The cook at 1 : 1.25 pours rice straight from the bag and says so; the two at 1 : 1 rinse first. Every one of them lands on the same clock: 3 minutes at pressure, then a 10-minute wait. That agreement on time is the most useful thing on this page.
The 1 : 1.25 cook spells out how to move between them: taste it, and if you want it softer with less bite, "add a little bit more water, maybe a quarter cup, and a little bit more time." That quarter cup is a softness adjustment made on purpose, not a correction.
Why the number is so much lower than the stove
- Nothing evaporates. A sealed pot returns every drop of steam to the rice. A stove pot loses water the whole time it simmers, and that lost water has to be in the pot from the start. The same grain needs about half as much water under pressure.
- How soft you want it. This is what the extra quarter cup buys, and it is the honest reading of the gap. One of the cooks above says it plainly: a little more water and a little more time takes the bite out of the grain. Rinsing cannot account for it — a quarter cup is 60 ml, and drained grains carry only a film, a few millilitres, nowhere near that.
- Rinsed or not, with the same caveat. Rinsed grain reaches the pot with a film of surface water, so rinse and drain it well and then measure the cooking water as usual — the small amount clinging to the grains is not a quarter cup. Rinsing is about removing loose starch, not about watering the rice.
- Broth or water. It makes no difference to the amount. One of the cooks above uses vegetable broth at exactly the same 1 : 1.
The cup that trips people up
If you measured your rice with the small cup that shipped with a rice cooker, you did not measure a US cup. That cup holds about 180 ml — roughly three-quarters of the 240 ml US cup — and a level one holds about 150 g of rice, not the 180 g a US cup holds.
This page's ratios assume a US cup (240 ml). If you use the smaller cooker cup on both sides, the ratio still works, because it is a ratio. It stops working the moment you measure rice with one cup and water with the other — that is the version of this mistake that produces mush. The full cup-by-cup comparison lives on the grams page.
The safe default, step by step
- Rinse the rice until the water runs mostly clear — or skip it if the bag says not to. Either is fine; rinse and drain well, then measure the cooking water fresh. Rinsing removes loose starch; it is not a way of adding water.
- Combine 1 cup rice with 1 cup water (1 : 1), measuring the water fresh after rinsing. Use 1 1/4 cups if you want a softer grain with less bite.
- Check the minimum. Most of these pots need a minimum amount of liquid to come to pressure — one cook above cites 1 1/2 cups for their model. If you are cooking a very small batch, check your manual or use the pot-in-pot method below.
- Seal the lid and set 3 minutes on high pressure for white rice. Skip the rice button: on several models it defaults to low pressure, and it cannot know whether you are cooking white or brown.
- Wait 10 minutes after the timer ends, then release any remaining pressure. Do not skip this and do not leave it an hour — the grain keeps taking up steam during the wait.
- Fluff with a fork, not a spoon. Stirring mashes grains you just kept separate.
White, brown, and basmati in the same pot
| Rice | Water per 1 cup rice | Time at high pressure |
|---|---|---|
| White (long or medium grain) | 1 : 1 firm, 1 : 1.25 softer | 3 min + 10 min natural release |
| Brown | 1 : 1 to 1 : 1.25 | 22 min + full natural release (10–20 min) |
| Basmati | 1 : 1 | 3 min + 10 min natural release |
The water barely moves between grains; the clock is what changes. Brown rice is the one that jumps — same water, but more than seven times the white-rice cook time, and a longer natural release. If you want the stove numbers for those same grains, they sit on the main water table.
Cooking a single portion: pot-in-pot
Below about a cup of rice, the problem is not the ratio — it is that the pot needs a minimum amount of liquid to come to pressure. One cook above solves it by putting 1/2 cup of rinsed rice and 1/2 cup of water in a stainless bowl, setting that on a trivet above 1 1/2 cups of water in the main pot, and cooking 3 minutes with a 10-minute natural release. The water underneath is there to build pressure; the rice only ever sees its own half cup.
FAQ
Why is my Instant Pot rice mushy? Too much water, or you opened it the second the timer went off. Use 1 : 1 and give it the full 10-minute wait before you release; reserve the extra quarter cup for when you actually want a softer grain.
Why is it crunchy or stuck to the bottom? Not enough water or not enough time. Add a quarter cup of water and another minute or two at pressure next batch. A thin layer stuck to the base usually means the pot was scorching because the water was short.
Do I really have to wait 10 minutes? Yes, and it is not optional. The rice is still absorbing during the release. Opening it early leaves a wet top over a firm middle, and the usual fix people reach for — more water — makes it worse next time.
Can I just press the rice button? You can, but several models run that preset on low pressure, and it cannot tell white from brown. Setting 3 or 22 minutes on manual high pressure is more predictable.
How much rice for one person? 1/2 cup dry makes a generous single portion. If your pot will not come to pressure on that little water, use the pot-in-pot method above.
Is brown rice a different ratio? No — the same 1 : 1 to 1 : 1.25. It is the clock that changes: 22 minutes at pressure, and a natural release that can run 10 to 20 minutes.
Does it scale? Yes, straight. Two cups of rice wants two cups of water, and the cook time does not change — the extra mass only lengthens how long the pot takes to come to pressure.
The takeaway
In a sealed pot, the water has nowhere to go, so start white rice at 1 : 1 (1 : 1.25 if you did not rinse it), give it 3 minutes on high pressure, and wait 10 minutes before you open the lid. Brown rice takes the same water and 22 minutes. Measure rice and water with the same cup — and if that cup is the small one from a rice cooker, remember it is 180 ml, not 240.