A typical 1 oz serving of macadamia nuts contains 2.2 grams of protein (7.91 g per 100 g), which makes it only a minor source of protein. That covers roughly 4% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Only about 4% of the calories in macadamia nuts come from protein, so it is more of an energy food than a protein food. It is worth eating for other reasons; the protein it adds to a day is incidental.
Among the 31 nuts in the database, macadamia nuts ranks 26th by protein per serving, and 641st out of all 796 foods on the site. Set against dry roasted pecans, another nut entry in the database, a serving carries about 0.5 g less protein (dry roasted pecans has 2.7 g per 1 oz).
It is an incomplete protein on its own; pairing it with other plant foods across the day covers the full range of essential amino acids. The serving above is measured by weight at 28 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Source: USDA FoodData Central #170178 - "Nuts, macadamia nuts, raw" (SR Legacy, published 4/1/2019). Values are the published reference figures for that record, not lab measurements for a specific brand or batch.
Quick answers
Macadamia nuts protein FAQ
How much protein is in macadamia nuts per 100 g?
Macadamia nuts has 7.91 g of protein per 100 g. A typical 1 oz serving (28 g) provides 2.2 g.
Is macadamia nuts a complete protein?
No. Macadamia nuts is an incomplete protein on its own; pairing it with other protein sources across the day covers the full range of essential amino acids.
How much of the Daily Value does a serving of macadamia nuts cover?
A 1 oz serving of macadamia nuts contains 2.2 g of protein, about 4% of the 50 g reference Daily Value.
Is macadamia nuts a good source of protein?
Macadamia nuts is only a minor source of protein, and about 4% of its calories come from protein, which makes it more of an energy food than a protein food. Set against dry roasted pecans, another nut entry in the database, a serving carries about 0.5 g less protein (dry roasted pecans has 2.7 g per 1 oz).