1/3 Cup Panko in Grams
If you need 1/3 cup of panko in grams, the answer is 16.7 g — measured spooned and levelled, according to King Arthur Baking. 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 panko, 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 panko 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 panko, the gap between a careful spoon-and-level measure and a careless scoop can be tens of grams — enough to change a recipe. Weighing 16.7 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 16.7. 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.
Panko cups to grams conversion table
| Cups | Grams | Tablespoons (approx.) |
|---|---|---|
| 1/4 cup | 12.5 g | 0.8 g |
| 1/3 cup | 16.7 g | 1 g |
| 1/2 cup | 25 g | 1.6 g |
| 2/3 cup | 33.3 g | 2.1 g |
| 3/4 cup | 37.5 g | 2.3 g |
| 1 cup | 50 g | 3.1 g |
| 1 1/2 cups | 75 g | 4.7 g |
| 2 cups | 100 g | 6.2 g |
| 3 cups | 150 g | 9.4 g |
| 4 cups | 200 g | 12.5 g |
The tablespoon column is a bonus for recipes that call for a spoonful or two: one tablespoon of panko weighs about 3.1 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
Spooned and levelled means the ingredient was measured the way King Arthur Baking measures it: spooned into the measuring cup until heaped, then levelled with a straight edge. Never scoop the cup through the bag or jar, and never tap the cup down, because both pack the ingredient and add weight. The source for the 50 g per cup figure is King Arthur Baking, and the confidence in the value is high. King Arthur Baking 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
A sauce that needs thickening
A sauce recipe calling for 1/3 cup of panko needs 16.7 g. Adding it gradually and whisking as you go is the safe route: you can always add more, but you cannot take it out. Weigh the full amount first, then add it in two or three stages until the sauce coats the back of a spoon.
Meal prep for the week
Cooking in bulk is where weighing earns its keep. A week of lunches built around 1/3 cup of panko starts with 16.7 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 panko needs 16.7 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.
When you do not have a scale
If you have no scale, spoon and level is your best method: spoon panko 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 16.7 g, but it will be far closer than scooping. A useful check: a cup of panko 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 panko?
1/3 cup of panko weighs approximately 16.7 g, measured spooned and levelled. The figure comes from the King Arthur Baking value of 50 g per cup. All weights on this page are approximate — verify with a kitchen scale when precision matters.
How many cups is 16.7 g of panko?
16.7 g of panko is 1/3 cup — the conversion works in both directions, since 50 g equals one cup. If your recipe is written in grams and your tools are cups, divide the gram weight by 50 to get cups.
How do I measure panko without a scale?
Use the spoon-and-level method: spoon panko into a dry measuring cup until it is heaped above the rim, then level it with the back of a knife. Do not scoop the cup through the bag and do not tap it down. For 1/3 cup, repeat for a second cup. It is less accurate than weighing 16.7 g, but it is the best cup method available.
Does the brand of panko change the weight?
It can, by a few grams per cup. Different brands mill, grind or process panko slightly differently, and moisture content varies with storage. The King Arthur Baking value of 50 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 panko?
Put your mixing bowl on a digital scale, press tare to zero it, and pour or spoon in panko until the display reads 16.7 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.