1/3 Cup Soy Sauce in Grams
If you need 1/3 cup of soy sauce in grams, the answer is 85 g — measured poured, according to USDA. You are probably here mid-recipe, so here is the number first and the explanation second. The rest of this page gives you the full conversion table for soy sauce, worked examples from real recipes, the measuring method behind the number, and the mistakes that most often throw this conversion off. All weights here are approximate; a kitchen scale is the final word when precision counts.
The problem with cups, in one paragraph
A cup looks like a fixed unit, but for soy sauce it is not. The same cup can hold more or less depending on how the ingredient settled in its container, whether it was spooned in or scooped, and whether it was levelled or heaped. With 1/3 cup of soy sauce, the gap between a careful spoon-and-level measure and a careless scoop can be tens of grams — enough to change a recipe. Weighing 85 g instead removes the whole question. It is also faster once you get used to it: put the bowl on the scale, press tare, and pour until the display reads 85. No levelling, no sweeping, no second-guessing. The table below gives you every amount you are likely to need, so you can weigh instead of measuring by volume from now on.
Soy Sauce cups to grams conversion table
| Cups | Grams | Tablespoons (approx.) |
|---|---|---|
| 1/4 cup | 63.8 g | 4 g |
| 1/3 cup | 85 g | 5.3 g |
| 1/2 cup | 127.5 g | 8 g |
| 2/3 cup | 170 g | 10.6 g |
| 3/4 cup | 191.2 g | 12 g |
| 1 cup | 255 g | 15.9 g |
| 1 1/2 cups | 382.5 g | 23.9 g |
| 2 cups | 510 g | 31.9 g |
| 3 cups | 765 g | 47.8 g |
| 4 cups | 1020 g | 63.8 g |
The tablespoon column is a bonus for recipes that call for a spoonful or two: one tablespoon of soy sauce weighs about 15.9 g. Remember that a cup is 16 tablespoons, so the numbers in the table are just the cup weight divided by 16, rounded sensibly. For small amounts a scale that reads to the gram is far more reliable than a spoon, because a heaped tablespoon can weigh half as much again as a level one.
How the weight was measured
Poured means the ingredient was measured the way USDA measures it: poured into a liquid measuring jug and read at eye level at the meniscus. Liquids do not pack, so the main source of error is reading the jug from above or using a dry cup for a liquid measure. The source for the 255 g per cup figure is USDA, and the confidence in the value is medium. USDA publishes a standard ingredient weight chart that recipe developers use as a reference, and this page follows it exactly rather than averaging across sources, because an average of two different measuring methods is a number that matches nobody's cup.
Worked examples
Meal prep for the week
Cooking in bulk is where weighing earns its keep. A week of lunches built around 1/3 cup of soy sauce starts with 85 g measured once, and the portions come out identical across five containers. That consistency is what makes meal prep actually work instead of turning into five slightly different meals.
A dressing made in a jar
A jar dressing built on 1/3 cup of soy sauce needs 85 g. Put the ingredient in the jar first, add the rest, shake, and taste. Weighing the base ingredient means the ratio of the dressing is right before you season it, so the salt and acid you add are adjusting flavour, not fixing a broken ratio.
Doubling a casserole
Doubling a casserole that uses 1 cup of soy sauce means 1/3 cup, or 85 g. Casseroles are forgiving, but the liquid-to-solid ratio still decides whether the result is saucy or dry. Weigh the doubled amount and the larger dish behaves like the original.
When you do not have a scale
If you have no scale, spoon and level is your best method: spoon soy sauce into the cup until it is heaped, then sweep a straight knife across the rim. Do not scoop, do not tap the cup, and do not shake it down. For 1/3 cup, fill the cup twice, levelling each time. It will not be as accurate as weighing 85 g, but it will be far closer than scooping. A useful check: a cup of soy sauce weighed on a friend's scale once tells you what your spoon-and-level cup actually weighs, and you can adjust from there. If you bake more than once a month, a basic digital scale is the single best purchase you can make for your kitchen — it costs little, takes up no space, and removes the biggest source of recipe failure.
Frequently asked questions
How many grams is 1/3 cup of soy sauce?
1/3 cup of soy sauce weighs approximately 85 g, measured poured. The figure comes from the USDA value of 255 g per cup. All weights on this page are approximate — verify with a kitchen scale when precision matters.
Does the brand of soy sauce change the weight?
It can, by a few grams per cup. Different brands mill, grind or process soy sauce slightly differently, and moisture content varies with storage. The USDA value of 255 g per cup is a standard reference, not a measurement of your specific packet — another reason to verify with a scale for important recipes.
What is the easiest way to weigh 1/3 cup of soy sauce?
Put your mixing bowl on a digital scale, press tare to zero it, and pour or spoon in soy sauce until the display reads 85 g. Add other dry ingredients on top, taring between each one, and you can measure a whole recipe in one bowl with no extra washing up.
Can I halve or double this amount?
Yes. Half of 1/3 cup of soy sauce is 42.5 g, and double is 170 g. Weighing makes scaling exact, whereas halving or doubling cups compounds measuring error. Scale the soy sauce by weight and adjust leavening and seasoning by taste rather than by a straight multiple.
How should I store soy sauce?
Cool cupboard; refrigerate after opening for best flavour. Keeping it sealed and dry also keeps the cup weight close to the 255 g per cup value used on this page.
Using 1/3 cup of soy sauce without over-salting
Soy sauce is one of the saltiest ingredients in the kitchen, and 1/3 cup at 85 g carries a lot of sodium into a dish. That is why recipes that call for this much soy sauce usually build the rest of the dish around it: the other ingredients are left unsalted until the soy sauce is in, and then the cook tastes before adding anything else. In a stir-fry sauce, 1/3 cup of soy sauce is typically combined with something sweet, something acidic and something aromatic — a spoonful of honey, a splash of rice vinegar, garlic and ginger — so the salt is balanced rather than dominant. In a marinade, the same amount seasons a large quantity of meat or tofu, and the salt helps the marinade penetrate. Never add soy sauce to a dish and then salt it in the same breath; wait, stir, taste, and then decide. If you need to reduce the salt, look for a low-sodium soy sauce rather than using less, because using less changes the liquid balance of the sauce.