Green peas are not keto friendly in typical serving sizes. A half-cup of cooked peas contains about 12.5 grams of total carbs and roughly 8 grams of net carbs (after subtracting fiber), which takes up a significant chunk of the 20 to 50 grams of net carbs most keto dieters aim for each day. A full cup pushes you to around 16 grams of net carbs, potentially using up most of your daily allowance in a single side dish.
Why Peas Are Higher in Carbs Than Most Vegetables
Green peas are technically legumes, not vegetables, and that distinction matters for keto. They’re starchier than leafy greens, broccoli, or zucchini, and about 75% of their calories come from carbohydrates. A single raw cup contains over 8 grams of natural sugar alone. Healthline lists peas alongside potatoes and corn as starchy vegetables to avoid or limit on low-carb diets, citing 25 grams of total carbs (16 grams net) per cup when cooked.
For comparison, a full cup of cooked broccoli has about 4 grams of net carbs, and a cup of spinach has less than 1 gram. Peas deliver roughly four times the net carbs of most keto-approved vegetables, which is why they land on most “foods to avoid” lists for strict keto.
The Upside Peas Offer
Peas aren’t nutritionally empty. A half-cup serving provides 4.3 grams of protein and 4.4 grams of fiber, making them one of the more protein-rich plant foods you can eat. That fiber slows how quickly carbs are absorbed, promoting a more stable rise in blood sugar rather than a sharp spike. Their glycemic index sits at 54, which is moderate and lower than white bread or rice.
None of that changes the net carb math for keto, but it does mean peas aren’t the worst choice if you’re following a more relaxed low-carb plan (say, 50 to 100 grams of net carbs per day) rather than strict ketosis.
How Much You Can Get Away With
If you really want peas on keto, portion control is everything. A quarter-cup of cooked peas comes in around 4 grams of net carbs, which is manageable if you keep the rest of your meals very low-carb that day. Think of it as a garnish rather than a side dish: a small scattering over a salad or stirred into cauliflower rice.
Frozen and canned peas have similar carb counts to fresh. A half-cup of frozen peas, boiled, contains about 11 grams of total carbs and 3.6 grams of fiber, landing at roughly 7.4 grams of net carbs. There’s no meaningfully lower-carb version of peas to seek out.
Better Keto Swaps for Green Peas
- Edamame: About 3 grams of net carbs per half-cup, with even more protein than peas. Provides a similar pop of green on the plate.
- Green beans: Around 4 grams of net carbs per cup, so you can eat double the volume for fewer carbs than a half-cup of peas.
- Broccoli: Roughly 4 grams of net carbs per cup, versatile in the same dishes where you’d use peas.
- Chopped zucchini: About 3 grams of net carbs per cup, works well as a diced pea substitute in fried rice or soups.
These alternatives give you the bulk and color of peas without the carb hit, leaving more room in your daily budget for other foods.
The Bottom Line on Peas and Keto
A full serving of green peas will use up a third to half of a strict keto dieter’s daily carb allowance. Small amounts (a few tablespoons) can technically fit, but you’ll need to plan around them carefully. For most people tracking net carbs at 20 to 30 grams per day, peas simply cost too much of the budget to be a regular part of meals.