How much does a human brain weigh?
Human brain weighs about 1.4 kg (3 lb).
📱 That's about the weight of 7 smartphones — or 2 basketballs 🏀, or 11 bananas 🍌.
At 1.4 kg, it ranks #3 of 15 in Weird & Surprising (lightest to heaviest) — heavier than Olympic gold medal (Paris 2024) (529 g) and lighter than Clay brick (2.3 kg).
About as heavy as a laptop — roughly 2% of your body weight burning about 20% of your energy.
Category: Weird & Surprising
| Grams | 1,350 g |
|---|---|
| Kilograms | 1.35 kg |
| Ounces | 47.6 oz |
| Pounds | 2.98 lb |
Source: Adult human brain typically 1.3-1.4 kg; editorial average 1.35 kg.