You can measure roughly one cup of dry rice using items you already have in your kitchen: a standard coffee mug, a cupped handful, a kitchen scale, or even a drinking glass. The key is knowing that one US cup of dry white rice weighs about 185 grams (6.5 ounces) and fills 8 fluid ounces of volume. Once you know those reference points, several household objects become surprisingly accurate stand-ins.
Use a Coffee Mug (With One Adjustment)
A standard US cup is 8 ounces (240 ml), but most coffee mugs hold 10 to 14 ounces. That means filling a typical mug to the brim gives you more than a cup of rice. To get closer to one cup, fill your mug about three-quarters full if it’s a medium-sized mug, or two-thirds full if it’s a large one.
If you have a smaller mug that feels lightweight and compact, it may actually be an 8-ounce mug, which is a direct 1:1 swap for a measuring cup. An easy way to check: fill the mug with water, then pour it into a water bottle with ounce markings. Once you know your mug’s volume, you can use it confidently every time.
Use Your Hands
Your cupped hand holds roughly half a cup of dry rice. Two cupped handfuls equal about one cup. This comes from portion-estimation guidelines developed by Mississippi State University’s Extension Service, and it works well enough for everyday cooking. Hands vary in size, so this method is approximate. A person with smaller hands might need two and a half handfuls, while someone with larger hands might need closer to one and a half.
This approach works best when you’re cooking for one or two people and don’t need laboratory precision. Rice is forgiving, and small variations in the amount of dry rice won’t ruin a meal as long as you adjust your water accordingly.
Weigh It With a Kitchen Scale
If you own a kitchen scale but not a measuring cup (surprisingly common), one cup of dry long-grain white rice weighs about 185 grams. Basmati and brown rice are slightly heavier at around 210 grams per cup. Scoop rice into any bowl on the scale until you hit the target weight, and you’ll have a more precise measurement than most other methods on this list.
Weighing is also the most reliable method if you’re cooking a large batch, where small errors multiply. A 10-gram difference barely matters for one cup but adds up across four or five.
Use a Drinking Glass or Other Container
Many standard drinking glasses hold 8 to 12 ounces. If you have a glass that feels like a “normal” size, not a tall tumbler or a juice glass, it likely holds about 10 ounces. Filling it to roughly 80% gives you close to 8 ounces of rice.
You can also use any container with a known volume. A 250 ml yogurt cup is almost exactly one cup. A half-pint mason jar (8 ounces) is a perfect match. Even a clean, empty soup can works: a standard 10.5-ounce can filled about three-quarters full gets you in the right range.
The Ratio Matters More Than the Exact Amount
Here’s something worth knowing: when cooking rice, the ratio of rice to water matters far more than the exact volume of rice. If you use a coffee mug to scoop one “mug” of rice, just use that same mug to measure your water (typically 1.5 to 2 mugs of water per mug of rice for white rice). The ratio stays consistent regardless of what you use to measure, so the rice turns out fine even if your “cup” is slightly off.
This is the principle behind the knuckle method, a technique used across Asian kitchens. You place your rice in a pot, rinse it, then rest your fingertip on top of the rice and add water until it reaches your first knuckle. Cover the pot, bring it to a boil, reduce to low heat, and cook for 18 to 20 minutes until the water is absorbed. Let it sit covered for at least five minutes before serving. No measuring cup needed at any point.
How Much Cooked Rice to Expect
One cup of dry rice yields about three cups of cooked rice, which is enough for two to three servings as a side dish. If you’re eyeballing your portions with one of the methods above and end up with slightly more or less than a cup, just keep in mind that the cooked volume scales at roughly that same 1:3 ratio. A little extra dry rice won’t cause problems as long as your pot is big enough and you add water proportionally.