Ran out of white rice mid-recipe? Barley will do the job at 1:1 (longer cooking) — but only if you also adjust for what the swap takes away or adds. Grains swap one-to-one by volume — a cup of one dry grain replaces a cup of another — but that is where the simplicity ends. Each grain drinks a different amount of water and needs a different amount of time on the heat, so the swap is really a cooking adjustment, not just a measuring one. This page gives the ratio, shows it in a table, and walks through three real dishes so you can see exactly what to change in the pot alongside the grain itself.
The ratio, in a table
The table below converts white rice to barley for the amounts you are most likely to meet. The rule is always the same: 1:1 (longer cooking).
| White rice called for | Barley to use |
|---|---|
| 1/4 cup | 1/4 cup |
| 1/3 cup | 1/3 cup |
| 1/2 cup | 1/2 cup |
| 2/3 cup | 2/3 cup |
| 3/4 cup | 3/4 cup |
| 1 cup | 1 cup |
| 1 1/2 cups | 1 1/2 cups |
| 2 cups | 2 cups |
By weight, one cup of white rice is about 198 g (spooned and levelled, King Arthur Baking). Our density table does not list a grams-per-cup figure for barley, so no weight is given for it here — measure it by volume. All weights on this page are approximate; verify with a kitchen scale when the result matters.
Worked examples
Example 1: Barley soup
A recipe for a rice soup calls for 1 cup of white rice. Using the ratio, that becomes 1 cup of barley. Add the barley early, with more water than the recipe asks for, and let the soup simmer until the grains are tender — barley holds its shape in liquid far better than rice, so the soup will still have distinct grains at the end rather than a starchy mush.
Example 2: Barley and mushroom salad
A recipe for a rice salad calls for 1 cup of white rice. Using the ratio, that becomes 1 cup of barley. Cook the barley until tender, drain it, and let it cool before tossing it with the mushrooms and dressing. The salad is chewy and hearty, and the grains stay separate even after a night in the fridge.
Example 3: Hearty grain bowls
A recipe for grain bowls calls for 2 cups of white rice as the base. Using the ratio, that becomes 2 cups of barley. Start the barley early — it takes a long simmer — and let it rest before fluffing. The chewy, nutty grains hold up under roasted vegetables and a strong dressing, and the bowl feels like a proper meal.
What changes in the result
Barley is the chewiest grain on this page, and that chew is its character. It takes longer to cook than white rice, it needs more water, and it comes out firm, nutty and pleasantly chewy, with grains that hold their shape even after a long simmer. That makes it a good swap for soups, stews and hearty salads, where the grain has to survive liquid and time without falling apart — and a poor swap for a light, fluffy side, where its chew would feel heavy. The flavour is mild and nutty, a little deeper than white rice, and it takes on the flavour of whatever it is cooked in.
When not to substitute
Do not swap in barley where the dish needs a light, fluffy grain. A pilaf, a rice pudding, or a delicate side for a mild fish will be wrong with barley: the grains stay chewy when the dish wants them soft, and the texture dominates the plate. Do not make the swap without adjusting the water and the time either — barley cooked with white rice's water and timing will be hard in the middle. And do not use pearl barley in a dish that must be ready quickly: it takes a long simmer, and there is no shortcut that works well.
Practical guidance
Always rinse the grain you are swapping in, unless the recipe depends on surface starch for creaminess — rinsing washes away dust and loose starch and gives a cleaner flavour, but it also removes the starch that thickens a risotto-style dish. Cook the new grain with the lid on and resist lifting it to peek: every lift lets out steam and adds minutes to the cooking time. Taste for doneness rather than trusting the clock, because the age of the grain and the width of your pan both shift the timing. Leftover cooked grains keep for several days in the fridge and freeze well, so cook a little extra and use it for fried rice or a grain salad the next day. All amounts on this page are approximate; a kitchen scale is the most reliable way to portion dry grains for a large batch.
Frequently asked questions
How much barley do I use instead of 1 cup of white rice?
Use 1 cup — the ratio is 1:1 by volume. Our density table does not list a grams-per-cup figure for barley, so measure it by volume. The adjustment is in the cooking: barley needs more water and a longer simmer than white rice.
How long does barley take to cook?
Longer than white rice — give it a good simmer with the lid on and taste a grain for doneness rather than trusting the clock. Barley stays chewy even when it is done, so do not keep cooking it in the hope that it will go soft like rice.
Can I use barley in soup?
Yes — this is one of the best uses for the swap. Barley holds its shape in liquid far better than rice, so a soup made with barley still has distinct grains at the end instead of turning into a starchy mush.
Does barley taste like rice?
Not quite. Barley is nuttier and chewier than white rice, with a firmer bite. The flavour is mild, so it takes on the flavour of whatever it is cooked in, but the chew is distinctive and it will show in a light, fluffy dish.
Is barley gluten-free?
No — barley contains gluten, so it is not suitable for a gluten-free table. If the dish must be gluten-free, use quinoa or rice instead.
Scaling the swap up or down
Scaling a grain swap is simple by volume — the ratio is one-to-one, so double the recipe and you double both numbers — but the cooking does not scale in the same way. A doubled pot of grains does not take twice as long to cook: the grains still cook in about the same time, but a larger pot needs a little more water, because more steam escapes, and a slightly longer rest off the heat, because a big pot holds its heat longer. For a very large batch, use a wider pot rather than a taller one, so the grains cook evenly instead of turning mushy at the bottom and hard at the top. If you are scaling down to a single serving, cook the grain in a small saucepan and watch it closely — a small amount of grain can go from done to dry in a minute. Leftover cooked grains keep for several days in the fridge, so when in doubt, cook a little extra rather than a little too little.
If the swap goes wrong — and how to store the substitute
If the grain comes out hard in the middle, it needed more water or more time — add a splash of hot water, put the lid back on, and give it another ten minutes on a low heat. If it comes out mushy, it had too much water or it was stirred too much: leave the lid off for a few minutes so the steam escapes, and next time use a little less water and do not stir the pot while it cooks. If the grain tastes bitter, it was not rinsed — rinse the next batch well under cold water before cooking. Store dry grains in airtight jars in a cool, dry cupboard, and keep cooked grains in the fridge for several days or freeze them in portions for fried rice or a grain salad.