How Much Protein Do Vegetarians Actually Need Each Day?

A Simple Way to Calculate It

Adult protein needs are typically estimated from body weight: roughly 0.8 to 1.0 grams of protein per kilogram of body weight. For a 60-kilogram adult, that works out to about 48 to 60 grams of protein a day. Needs run higher during pregnancy, breastfeeding, muscle-building training, or in older age — typically the recommendation rises to 1.2 to 1.6 grams per kilogram — and people who are very active or train strength regularly should also aim a bit higher.

Is It Hard for Vegetarians to Hit the Target?

Not really, as long as the diet is varied. The following combination alone provides more than 50 grams of protein:

• Soy milk, 300 ml (about 9 g)
• Firm tofu, 150 g (about 15 g)
• Brown rice, 200 g cooked (about 5 g)
• Chickpeas, 100 g (about 9 g)
• A small handful of nuts (about 6 g)
• Two slices of whole-wheat bread (about 6 g)

Common Misconceptions

Many people worry that a vegetarian diet won't provide "enough" protein, but the real issue is usually not total quantity — it's relying on too narrow a range of soy products and whole grains. As long as you have one or two kinds of legumes, a serving of whole grains, and a small handful of nuts or seeds each day, protein targets are generally within reach. Older adults, whose protein synthesis efficiency declines with age, may get less practical benefit from the same intake even when the numbers match up — so it's worth aiming a bit higher and spreading protein intake across multiple meals.