How much fiber is in cashews?
Cashews has 0.9 g of fiber per 1 oz (28 g, ~18 nuts) — about 3% of the 28 g Daily Value. That's 3.3 g of fiber per 100 g.
USDA FoodData Central · raw · FDC 170162
Fiber by portion
| Portion | Fiber | % DV | Total carbs | Net carbs | Calories |
|---|---|---|---|---|---|
| 1 oz (28 g, ~18 nuts) | 0.9 g | 3% | 8.5 g | 7.6 g | 155 |
| 100 g | 3.3 g | 12% | 30.2 g | 26.9 g | 553 |
| 1 oz (28 g) | 0.9 g | 3% | 8.6 g | 7.7 g | 157 |
% DV against the FDA Daily Value of 28 g of fiber. Net carbs = total carbs − fiber, since fiber isn't digested like other carbs. Values from USDA per-100 g data (FDC 170162, SR Legacy). raw.
If you reach for cashews expecting a fiber boost, the numbers will disappoint you — and that’s worth knowing up front. A 1 oz serving (28 g, about 18 nuts) carries only about 0.9 g of fiber — roughly 3% of the 28 g Daily Value — from 3.3 g per 100 g. That makes cashews the lowest-fiber common nut, well behind almonds, and it’s the one nutritional category where cashews clearly lag the rest of the bowl. They bring plenty else, but fiber isn’t on the list, and pretending otherwise sets up the wrong expectation.
Why cashews fall short on fiber
The shortfall traces back to what a cashew is. Compared with tree nuts like almonds and walnuts, cashews are softer, starchier, and more carb-forward — that creamy, almost buttery texture is the opposite of a fiber-dense food. Two things in particular hold them back. First, cashews carry more starch and less of the tough structural fiber that firmer nuts are built around. Second, they have no skin to speak of: most of an almond’s fiber lives in its brown skin, and cashews simply don’t have that high-fiber coat. Put together, you get a nut that’s rich in fat, copper, and magnesium but thin on fiber — about a third of what an equal handful of almonds provides.
The fiber-and-carb knock-on
That low fiber does more than leave a gap on the fiber line — it drags on cashews’ carb math too. Net carbs are total carbs minus fiber, and with only ~0.9 g of fiber to subtract from the roughly 8.5 g of total carbohydrate in an ounce, cashews land near 7.6 g net carbs — the highest of the common nuts. A higher-fiber nut like almonds gets a bigger discount (about 3.5 g subtracted, down to ~2.5 g net), which is why almonds read as a low-carb snack and cashews don’t. So the low fiber isn’t an isolated weakness; it’s the same reason cashews are the least keto-friendly nut. If fiber or net carbs are what you’re optimizing for, almonds are the straightforward swap — same grab-and-go convenience, far more fiber, far fewer net carbs. Cashews earn their place on texture and minerals, not on fiber.
For why cashews aren’t a protein source either — despite a respectable per-100g number — see protein in cashews.
Packaged nuts options, graded
Prefer something off the shelf? Here are the best-graded nuts in our catalog — each scored on our transparent Labelgrade. Check the fiber line on each label.
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Labelgrade 85/100 · 3 g fiber · 6 g protein
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Labelgrade 79/100 · 3 g fiber · 6 g protein
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Buy links are affiliate links — we may earn a commission at no extra cost to you. The Labelgrade is independent of any affiliate relationship. More.
Frequently Asked Questions
How much fiber is in a 1 oz serving of cashews?
About 0.9 g of fiber in a 1 oz serving (28 g, roughly 18 nuts), from 3.3 g per 100 g (USDA FDC 170162). That's low for a nut — roughly a third of what the same-size handful of almonds delivers.
What percent of the daily value for fiber is in an ounce of cashews?
Only about 3% of the 28 g FDA Daily Value from one 1 oz handful. Cashews are not a meaningful fiber source — if fiber is what you're after from a nut, almonds (~3.5 g per oz) are a far better pick.
Do cashews have less fiber than almonds?
Yes, by a wide margin. An ounce of cashews has about 0.9 g of fiber versus roughly 3.5 g in an ounce of almonds — almonds carry nearly four times as much. Most of an almond's fiber sits in its brown skin, which cashews don't have, and cashews are starchier and lower in fiber overall (USDA FDC 170162).
Why are cashews low in fiber?
It's their botanical make-up. Cashews are softer, starchier, and more carb-forward than tree nuts like almonds and walnuts, and that creamy profile comes with less of the tough structural fiber. They also lack the high-fiber skin almonds keep, so they sit at the bottom of the nut bowl for fiber at just 3.3 g per 100 g.
Does the low fiber affect cashews' net carbs?
Yes — it keeps them high. Net carbs are total carbs minus fiber, and with only ~0.9 g of fiber to subtract from ~8.5 g of total carbs, cashews land near 7.6 g net per ounce. The low fiber is a big reason cashews are the least keto-friendly common nut.
When was this data last verified?
2026-06-18, against USDA FoodData Central FDC 170162 (Nuts, cashew nuts, raw; SR Legacy). We re-verify reference pages periodically and update when USDA revises its data.
Whole-food values are USDA reference data, not a Labelgrade (that score is for branded packaged products). See our methodology and the carbs & net carbs lane.