Green Pea Calories & Nutrition Calculator

Green peas (Pisum sativum L.) rank among the oldest cultivated crops on earth, with archaeological evidence dating their domestication to the Fertile Crescent nearly 10,000 years ago ^[1]. Today they remain one of the most widely consumed vegetables worldwide, appreciated for their natural sweetness, versatility, and compact nutritional punch. A single cup of cooked green peas delivers roughly 8.6 g of protein and 8.8 g of dietary fiber — values that rival many legumes and significantly outperform most other common vegetables ^[7].

Recent bibliometric research spanning 2013–2023 reveals an accelerating interest in pea nutrition, with publications growing at an annual rate of 3.25% and research centers in Canada, Poland, and China leading investigations into protein quality, antioxidant capacity, and anti-nutritional factor management ^[1]. This expanding body of evidence positions peas not merely as a traditional comfort food but as a scientifically validated functional ingredient.

What makes peas particularly notable is their dual identity: botanically classified as a legume (family Fabaceae) yet widely consumed as a vegetable in their immature green form. This distinction matters nutritionally — fresh green peas retain significantly more vitamin C (14.2 mg/100 g cooked vs. 0.4 mg/100 g for cooked split peas) while split peas concentrate protein (8.3 g/100 g) and fiber (8.3 g/100 g) to levels comparable to lentils and chickpeas ^[2].

A 100 g serving of boiled green peas provides 84 kcal — modest by any standard, yet those calories carry exceptional nutrient density. The macronutrient distribution is roughly 26% protein, 74% carbohydrate, and less than 2% fat, making peas one of the leanest protein sources in the plant kingdom ^[7].

The protein in peas is dominated by globulins (legumin and vicilin), which together account for 55–65% of total seed protein ^[2]. Pea protein is notably rich in lysine — an essential amino acid frequently lacking in cereal-based diets — but contains less methionine and cysteine, which is why combining peas with rice or wheat creates a complementary amino acid profile ^[6]. Cooking improves protein digestibility by denaturing trypsin inhibitors, and mild hydrothermal treatment (100 °C for 20 minutes) has been shown to increase true protein digestibility from approximately 72% to over 85% in rat bioassays ^[5].

The carbohydrate fraction is dominated by starch (amylose content ranging from 17% to 43% depending on variety), with a meaningful proportion classified as resistant starch ^[6]. This resistant starch resists digestion in the small intestine, functioning as a prebiotic fiber in the colon. The dietary fiber profile — roughly 5.5 g per 100 g in boiled peas — includes both soluble fractions (pectins, oligosaccharides) and insoluble fractions (cellulose, hemicellulose) that support gut motility and microbial diversity ^[2].

Fat content is negligible (0.22 g/100 g cooked), with the small lipid fraction consisting predominantly of polyunsaturated fatty acids including linoleic acid and alpha-linolenic acid, both recognized as essential fatty acids in human nutrition ^[6].

Beyond macros, peas deliver a spectrum of vitamins and minerals that make them unusually nutrient-dense per calorie. The table below compares key micronutrients across common pea preparations:

Folate is perhaps the standout micronutrient: at 63 mcg per 100 g (about 16% of the adult Daily Value), cooked green peas are among the best vegetable sources of this B-vitamin essential for DNA synthesis and red blood cell formation ^[7]. The combination of folate with vitamin C (which enhances non-heme iron absorption) and iron makes peas especially valuable for meeting daily micronutrient targets ^[1].

Vitamin K in peas (25.9 mcg/100 g) plays a critical role in blood coagulation and bone metabolism through the carboxylation of osteocalcin, a protein that binds calcium into the bone matrix ^[2]. Meanwhile, manganese (0.53 mg/100 g, approximately 23% DV) functions as a cofactor for superoxide dismutase, a key enzyme in the body's antioxidant defense system ^[6].

It is worth noting that canned peas show measurable nutrient losses — vitamin C drops from 14.2 mg to 9.6 mg per 100 g, and thiamine falls by over 50% compared to freshly cooked peas ^[7]. Frozen peas, which are blanched and flash-frozen shortly after harvest, tend to retain vitamin A better than their fresh-cooked counterparts (105 mcg RAE vs. 40 mcg RAE) due to the breakdown of cellular membranes during freezing, which releases bound carotenoids.

Raw peas are perfectly edible and offer the highest vitamin C content (40 mg/100 g), but cooking fundamentally transforms the nutritional bioavailability of peas in both positive and negative ways.

On the positive side, heat treatment significantly reduces anti-nutritional factors that interfere with nutrient absorption. Phytic acid — which forms insoluble complexes with iron, zinc, and calcium in the gastrointestinal tract — is partially degraded through cooking ^[5]. Trypsin inhibitors, which impair protein digestion by blocking pancreatic enzymes, are largely inactivated by boiling at 100 °C for 20 minutes; microwaving at 2,450 MHz for 4 minutes achieves near-total inactivation ^[6]. Lectins, which can cause gastrointestinal distress at high concentrations, are reduced by 93–99% through boiling ^[6].

Saharan & Khetarpaul (1994) demonstrated that cooking pea flour improved true digestibility from roughly 72% to 85%, biological value from 53% to 66%, and net protein utilization from 38% to 56% — substantial improvements that underscore the nutritional advantage of cooked over raw peas for protein absorption ^[8].

The trade-off is heat-sensitive vitamin loss. Vitamin C declines by approximately 65% from raw (40 mg) to boiled (14.2 mg) per 100 g, with the extent of loss depending on cooking time, water volume, and whether the cooking liquid is discarded ^[3]. Steaming preserves slightly more vitamin C (approximately 16 mg/100 g) than boiling because it avoids leaching water-soluble vitamins into the cooking water. Thiamine shows moderate sensitivity, with losses of 10–15% during standard boiling ^[3].

A practical strategy to maximize nutrient retention: steam or microwave peas with minimal water for the shortest time needed to reach tender-crisp texture. If boiling, use the cooking liquid in soups or gravies to recapture leached minerals and B-vitamins.

The culinary versatility of peas spans virtually every food culture. In the Indian subcontinent, dried peas form the base of matar dal (spiced pea stew) and matar paneer — preparations that pair peas with dairy and whole grains to create nutritionally complete meals. The traditional Indian practice of tempering peas with cumin seeds and turmeric is not merely culinary tradition; cumin contributes additional iron (0.7 mg per ½ tsp), while turmeric's curcumin has been studied for its synergy with the phenolic compounds in peas ^[6].

In Britain, mushy peas — made from marrowfat peas soaked and then slowly cooked — remain a beloved companion to fish and chips. The prolonged soaking and cooking process makes mushy peas exceptionally easy to digest, which partly explains their traditional use as a comfort food for children and elderly individuals. Nutritionally, they offer about 98 kcal and 6.1 g protein per 100 g, though sodium content varies considerably depending on preparation ^[9].

Contemporary food science has expanded pea applications further: pea protein isolates now appear in meat analogs, dairy-free milks, and protein bars, while pea starch and fiber fractions are being explored for biodegradable packaging materials ^[2]. The global pea protein market was valued at approximately USD 2.1 billion in 2023 and is projected to reach USD 4.7 billion by 2030, driven by demand for allergen-free, non-GMO plant proteins ^[2].

For home cooks tracking their nutrition, the choice between fresh, frozen, and canned peas carries real nutritional implications. Frozen peas offer the best balance of convenience and nutrient retention because they are typically blanched and frozen within hours of harvest. Canned peas, while shelf-stable, show lower potassium (173 mg vs. 271 mg per 100 g) and significantly reduced B-vitamins compared to freshly cooked peas ^[7]. When using canned peas, rinsing and draining reduces sodium by approximately 40% in salted varieties.