Infact
52 / 100
Mixed Hawaii

Mauna Loa is the world's largest volcano.

Infact verdict: Mixed (52/100).

The claim that Mauna Loa is the world's largest volcano is partially true. According to NASA and other reliable sources, Mauna Loa is the largest active volcano by mass and volume. However, Tamu Massif is now considered the largest volcano overall. Therefore, the claim is misleading as it oversimplifies the current understanding of volcanic size rankings.

August 22, 2026 Language: en 1 claim analyzed
How is this score determined? →

Individual claims

52
Mixed Geography
Mauna Loa is the world's largest volcano.
Mauna Loa is the largest active volcano by mass and volume, but Tamu Massif is considered the largest overall. This makes the claim misleading rather than entirely false.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 60
Web Consensus Weight 40
Source Quality Score 60
Source Quality Weight 20
Llm Reasoning Score 40
Llm Reasoning Weight 40
Llm Reasoning Score Raw 40
Weighted Total 52
Evidence Summary Web evidence indicates Mauna Loa is the largest active volcano, but Tamu Massif is larger overall.

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