How much fiber is in rhubarb?
2.2 gfiber in 1 cup, diced, raw (122 g)
That’s 8% of the Daily Value, under the 10% the FDA calls a good source. It still adds up over a day.

- Per serving
- 2.2 g
- Daily Value
- 8%
- Per 100 g
- 1.8 g
- In fruits
- #29 of 47
Soluble and insoluble fiber
Soluble 0.4 g (20%)Insoluble 1.8 g (80%)
Soluble fiber turns to gel and helps with cholesterol and blood sugar. Insoluble fiber adds bulk and keeps you regular.
Counts toward your 20 plants a week in FiberKit.
Compared with other fruits
| # | Food | Serving | Fiber | % DV | Soluble · insoluble |
|---|---|---|---|---|---|
| 1 | 1 cup | 8 g | 29% | ||
| 2 | 1 cup | 7.6 g | 27% | No split data | |
| 3 | 1 cup | 6.5 g | 23% | ||
| 4 | 1 fruit | 6 g | 21% | ||
| 5 | 1 medium | 5.5 g | 20% | ||
| 29 | 1 cup, diced, raw | 2.2 g | 8% |
Questions
How much fiber is in rhubarb?
Rhubarb has 2.2 g of fiber in 1 cup, diced, raw (122 g), 8% of the Daily Value. That’s 1.8 g of fiber per 100 g.
Is rhubarb high in fiber?
Not especially. One serving gives 8% of the Daily Value, under the 10% the FDA calls a good source.
Is the fiber in rhubarb soluble or insoluble?
Both. A serving has 0.4 g of soluble and 1.8 g of insoluble fiber, so it’s 20% soluble.
How does rhubarb compare with other fruits?
It ranks #29 of 47 fruits in FiberKit by fiber per serving. Raspberries leads with 8 g in 1 cup.
Fiber: USDA FoodData Central, SR Legacy, FDC ID 167758. Values are for the serving shown and vary with variety and cooking.