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Calories in chia seeds

486 cal / 100 g
The short answer

Chia seeds: about 486 calories per 100 g. A portion of 1 oz (28 g) has about 138 calories.

Calories and nutrients by portion

PortionGramsCaloriesProteinCarbsFat
100 g (3.5 oz)100 g48616.5 g42.1 g30.7 g
1 oz28 g1384.7 g12 g8.7 g

Where the calories come from

  • Protein 13%
  • Carbs 33%
  • Fat 54%

Shares are estimated with 4 calories per gram of protein and carbohydrate and 9 per gram of fat.

Full nutrition per 100 g

Calories486 kcal
Protein16.5 g
Carbohydrate42.1 g
Fibre34.4 g
Fat30.7 g
of which saturated3.3 g
Cholesterol0 mg
Sodium16 mg
Potassium407 mg
Calcium631 mg
Iron7.7 mg
Vitamin C1.6 mg
Water5.8 g

How it compares with other nuts and seeds

Among the 10 nuts and seeds listed on this site, chia seeds ranks number 2 from the lowest in calories per 100 g, and number 7 from the highest in protein per 100 g.

Fewer calories per 100 g

  • Coconut meat 354 cal

More calories per 100 g

  • Flaxseed 534 cal
  • Pumpkin seeds 559 cal
  • Pistachios 560 cal

What 138 calories equal in exercise

For a 155 lb (70 kg) person, Harvard Health lists about 133 calories for 30 minutes of walking at 3.5 mph and about 288 for 30 minutes of running at 5 mph. By that chart, a portion of chia seeds (1 oz, 138 calories) equals about 31 minutes of walking or 14 minutes of running. Use the calories burned calculator for your own weight.

About these numbers

The figures come from the USDA FoodData Central entry “Seeds, chia seeds, dried”. They are reference averages, so brands, ripeness, cuts and recipes shift the real number. Treat them as estimates, and weigh food for the closest result.

Quick answers

How many calories are in chia seeds (1 oz)?

About 138 calories (≈). That is 1 oz (28 g) of chia seeds, using the USDA reference value of 486 calories per 100 g.

How many calories are in 100 grams of chia seeds?

About 486 calories (≈). One ounce (28 g) is about 138 calories.

How much protein is in chia seeds?

16.5 g per 100 g, and about 13% of its calories come from protein (≈). A portion of 1 oz has about 4.7 g.

Source

  • USDA FoodData Central, SR Legacy: Seeds, chia seeds, dried (FDC ID 170554)
  • U.S. Department of Agriculture, Agricultural Research Service. FoodData Central. fdc.nal.usda.gov
  • Harvard Health: calories burned in 30 minutes for people of three different weights

General information, not medical advice. Nutrient values are estimates and vary by product and portion.

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© 2026 CaloLiftFood data: USDA FoodData Central