Rice cookers use different measuring cups, water lines and cooking programs. So there isn’t one rice-to-water ratio that works for every cooker and every type of rice.
Start with the instructions for your model and the rice that you are using. The examples below show why a ratio from one cooker may not work in another.
Rice-To-Water Ratios for Different Types of Rice
The water amount depends on the rice and the cooker. Check your model’s instructions for the rice type, cooking setting, and batch size before using a general ratio. Some instructions use measured cups of water; others use water-level lines inside the pot.
The five COSORI examples below come from the US manual for the CRC-R501-KUS. Each uses one cup of uncooked rice, and both rice and water are measured with the supplied cup of about 180 mL. The manual gives a measured ratio because the pot has no one-cup line.
These examples are not instructions for another cooker or a larger batch. Follow the appropriate row, preparation steps and limits in your own manual.
1. Long-Grain White Rice
One-cup CRC-R501-KUS example: 1 cup long-grain white rice to 1¼ cups water.
Long-grain white rice is a versatile grain that is commonly available in most supermarkets.
This type of rice is suitable for most cuisines, including Asian, Mexican, and Indian.
When cooked properly, it produces fluffy white grains that separate easily.
The example uses WHITE RICE/LONG GRAIN. A different cooker may use a water-level line or another measured amount.
Do not assume that grain length alone determines how much water to add. Use the instructions for the rice and model together.
2. Medium-Grain White Rice
One-cup CRC-R501-KUS example: 1 cup medium-grain white rice to 1¼ cups water.
Medium-grain rice has shorter, wider kernels than long-grain rice. The kernels are about two to three times as long as they are wide.
Cooked medium grains tend to be moist and cling together. USA Rice describes these grain-size and texture differences. Grain length alone does not establish which rice will cook faster.
Medium-grain white rice is commonly used to make rice puddings and risotto.
The example uses WHITE RICE/MED-SHORT. Follow a separate recipe if you are making a dish such as risotto rather than plain cooked rice.
For example, the Aroma ARC-5104SBC manual has a separate Arborio method with its own water amount, batch limit and Steam program. It is not the ordinary white-rice water-line method.
Recommended Reading: Rice Cooker Bubbles Over? Here’s How To Prevent It…
3. Short-Grain White Rice
One-cup CRC-R501-KUS example: 1 cup short-grain white rice to 1¼ cups water.
Short-grain rice has plump, nearly round kernels. Cooked grains tend to be soft and sticky, so some cling is normal for this rice.
The aim is the texture suited to your dish, not necessarily the separate grains of long-grain rice. Rinsing and the correct water amount do not turn every variety into the same texture.
The example uses WHITE RICE/MED-SHORT. For another cooker, use its own short-grain water amount and program.
4. Jasmine Rice
Water amount: follow your cooker’s instructions for jasmine rice.
Jasmine rice is a special rice variety. It’s a type of aromatic long-grain rice with floral notes.
Most jasmine rice comes from Thailand and South-East Asia. It’s a staple in Thai cooking.
This rice gets its name from its resemblance in color to jasmine flowers.
Use the water amount and setting that your cooker’s manufacturer recommends for jasmine rice. For example, Zojirushi’s jasmine-rice instructions use the supplied rice cup, the corresponding JASMINE water-level line, and the JASMINE setting on models that have it. If your cooker has no jasmine setting, check its model-specific guidance rather than assuming either 1:1.25 or 1:1.5 applies.
5. Basmati Rice
Water amount: follow your cooker’s instructions for basmati rice.
Basmati rice is another variety of highly fragrant long-grain rice. It originates in India and is a staple in Indian and Pakistani cooking.
The grains expand in length and turn fluffy when cooked. It’s soft but holds its shape.
When cooking basmati rice in a rice cooker, don’t assume it needs the same amount of water as jasmine rice. Check your model’s basmati instructions for the water amount, cup size, setting, and permitted batch size.
For example, Zojirushi’s guide for the NS-LGC05 gives separate water amounts for white jasmine and white basmati rice. That model’s instructions should not be treated as a recipe for every rice cooker.
Follow your model’s sequence for finishing and fluffing the rice, including any separate rest. Use the supplied rice paddle or another utensil that the manufacturer approves for the pot.
6. Brown Rice
One-cup CRC-R501-KUS example: 1 cup long-grain brown rice to 1½ cups water.
Brown rice has had its inedible hull removed but keeps the bran layer and germ. It comes in different grain lengths, and its preparation differs from white rice.
The example uses BROWN RICE/LONG GRAIN. This model gives medium/short-grain brown rice a different row, so even “brown rice” is not one universal ratio.
Use the brown-rice instructions before measuring the water. The Aroma ARC-757SG manual, for example, uses a separate measured-water chart for brown rice because its pot lines are for white rice.
7. Sushi Rice
One-cup CRC-R501-KUS sushi example: 1 cup rice to 1¼ cups water.
Rice used for sushi is commonly short- or medium-grain white rice. Its tendency to cling helps with shaping the finished sushi.
Cooked sushi rice is seasoned separately. Zojirushi’s sushi-rice recipe, for example, adds vinegar seasoning after cooking; that seasoning is not the water measured into the cooker.
When cooking sushi rice in a rice cooker, use the rice type, water amount or line, and program specified for your model and recipe.
The example uses WHITE RICE/MED-SHORT. Follow the recipe’s instructions for seasoning and serving after cooking.
Top Tips to Improve the Quality of Rice Cooked in A Rice Cooker
Measurements are only part of the process. The rice preparation, selected program and finishing steps also need to match the cooker and the dish.
Use the following points alongside your model’s instructions. They can help you avoid mixing a recipe’s cup ratio with a different cooker’s water lines.
1. Follow Your Cooker’s Measuring Instructions
Use the measuring cup specified by your cooker’s manufacturer. A rice-cooker cup is not necessarily a standard US measuring cup. For example, the Aroma ARC-2020 manual bases its rice-and-water table on a small 180 mL cup.
If the instructions give a cup-to-cup ratio, use the stated cup convention for both ingredients. If they use the pot’s water-level lines, measure the uncooked rice first, prepare it as directed, and then add water to the correct line with the rice in the pot. The line is a fill level, not a measurement of water to pour in separately.
Use the line and setting specified for that rice type and batch size. Don’t replace the manufacturer’s water-line method with a generic ratio just because the pot has different markings for different types of rice.
2. Rinse the Rice
Rinse the rice according to its package and your cooker’s instructions. Rinse-free rice does not need washing, and there is no single rinse count that applies to every product.
Rinsing removes loose surface starch and milling residue; it does not wash away most of the starch inside the grain. Zojirushi’s FAQ explains rinsing and rinse-free rice.
Rice varieties also differ in their starch properties. Some are meant to cling when cooked, so do not expect rinsing alone to make every variety produce separate grains.
3. Choose the Right Setting
If your rice cooker comes with multiple settings, match the setting to the variety of rice for the best results.
Check the instruction manual for the program that matches your rice and preparation method.
Further Reading: For Which Rice Do Rice Cookers Use Less Water
4. Fluff the Rice when Cooked
Follow the finishing sequence for your cooker rather than assuming that a switch to Keep Warm always means the same next step.
For example, Zojirushi’s short-grain brown-rice recipe calls for immediate fluffing in its Micom and IH cookers but a separate 15-minute rest in its conventional cookers. That is a model-specific example, not a rest time for all rice.
Use the supplied rice paddle or a utensil approved for the pot. Tiger’s support guidance warns against metal utensils on its inner pan.
Open the cooker as its instructions direct, including any pressure-release precautions. Fluffing helps loosen and redistribute the rice, but naturally sticky varieties will still cling.
