All Foods

Green Beans vs Onion

Calories, macronutrients and nutrition facts compared side by side (per 100g).

Nutrition Comparison

Per 100gGreen BeansOnion
Calories31kcal40kcal
Protein1.8g1.1g
Carbs7g9.3g
Fat0.2g0.1g
Fiber2.7g1.7g
Sugar3.3g4.2g
Sodium6mg4mg

Green marks the more favorable value (fewer calories/sugar/sodium, more protein/fiber).

Key Takeaways

  • Green Beans has 9 fewer calories per 100g than Onion (29% less).
  • Green Beans delivers more protein (1.8g vs 1.1g per 100g).
  • Green Beans has more fiber (2.7g vs 1.7g).
  • Onion contains less fat (0.1g vs 0.2g).
  • Green Beans has less sugar (3.3g vs 4.2g).

Green Beans

Green beans deliver fiber, folate and vitamin K for very few calories. Unlike dried legumes they are eaten as a fresh vegetable, combining a little plant protein with the high water content that makes them filling.

View Green Beans nutrition →

Onion

Onions are low in calories and a notable source of quercetin, an antioxidant flavonoid, plus prebiotic fibers that feed gut bacteria. Their sulfur compounds — released when chopped — are being studied for cardiovascular benefits.

View Onion nutrition →

Track Green Beans & Onion in Kairo

Scan your food with AI and automatically track calories and macros. No manual entry needed.

Try Kairo for free

More Comparisons