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Sweet potato glycemic index (GI)

Article author photo Elen Khachatrian by Elen Khachatrian | Last updated on September 23, 2023
Medically reviewed by Ani Harutyunyan Article author photo Ani Harutyunyan

Sweet potato consists of 20 g of carbohydrates per 100 g. This plant contains 4.2 g of sugars per 100 g.

Based on the numbers from The International Tables of Glycemic Index, and the mean of three studies, the glycemic index of sweet potato is 62.

The glycemic index of sweet potatoes from New Zealand falls in the range of 77±12, while the GI of sweet potatoes from Canada falls in the range of 48±6. The lowest glycemic index is sweet potato from Australia. It is equal to 44 (1).

The cooked sweet potatoes from Australia also have Gi equal to 44; when peeled, cubed, and cooked, sweet potato from Jamaica has a higher GI of 46±5. According to the nine studies, cooked sweet potato, peeled, cut into pieces, and boiled for 8 min has GI that falls in the range of 70±6. (1).

In addition, sweet potato, peeled, cubed, and boiled in salted water, has GI equal to 59 (1).

According to the study, sweet potato, peeled and fried in vegetable oil, has a GI value that falls in the range of 76±7 (1).

Since sweet potatoes have a relatively high Glycemic index, large amounts in a meal may be unsuitable for people with type 2 diabetes. However, boiling seems to be associated with lower GI values than baking, frying, or roasting (2).

By following the link, you can find the glycemic index table for many foods and beverages.


Article author photo Elen Khachatrian
Education: Nutrition & Microbiology at YSU
Last updated: September 23, 2023
Medically reviewed by Ani Harutyunyan

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Data provided by should be considered and used as information only. Please consult your physician before beginning any diet.