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Black mamba vs King cobra

Black mamba vs king cobra
King cobra is larger on weight
King cobra is 3.8× black mamba on weight.

A black mamba and a king cobra can be compared on 3 measures. The figures below are typical adult or full-size values, with the larger of the two in bold.

Side by side

Larger value in bold. Ranges reflect genuine variation, not uncertainty.
Black mamba King cobra
Weight 1–3.1 kg 4–12.7 kg
Length 2–4.3 m 3–5.85 m
Typical lifespan 10–20 yr 17–22 yr

What the numbers say

  • King cobra is 3.8× black mamba on weight.
  • King cobra is somewhat greater than black mamba on length — about 1.5×.
  • King cobra is 1.8× black mamba on typical lifespan.

Weight compared.

King cobra 4–12.7 kg
Black mamba 1–3.1 kg

Black mamba

The fastest snake and Africa's longest venomous one; it is named for the black inside of its mouth, not its colour.

King cobra

The longest venomous snake, delivering enough neurotoxin in one bite to kill an elephant.

This is a comparison of published measurements, nothing more. It describes how two things differ on measures that have been recorded; it does not predict how they would fare against each other in any situation.

Common questions

Which is bigger, black mamba or king cobra?
King cobra is 3.8× black mamba on weight. Both figures are typical values; the full range for each is in the table above.
How do black mambas and king cobras compare on length?
Black mamba: 2–4.3 m. King cobra: 3–5.85 m. King cobra is somewhat greater than black mamba on length — about 1.5×.
How do black mambas and king cobras compare on typical lifespan?
Black mamba: 10–20 yr. King cobra: 17–22 yr. King cobra is 1.8× black mamba on typical lifespan.

Related pages

Sources

  1. Wikidata — Wikimedia Foundation (CC0 1.0)
  2. Smithsonian National Museum of Natural History — Smithsonian Institution

How these figures are compiled and checked