The Strait of Hormuz carries roughly one-fifth of global oil supply: TRUE

The claim is that the Strait of Hormuz carries approximately one-fifth of the world's oil supply. The verdict is true. This is not a rough talking point or a media exaggeration — it is a figure grounded in primary official data and confirmed by multiple independent institutions.

The strongest evidence comes directly from the U.S. Energy Information Administration. Its 2023 World Oil Transit Chokepoints report documents that approximately 21 million barrels per day of oil and petroleum products transited the Strait of Hormuz in 2022. The EIA's own Strait of Hormuz Fact Sheet calls it 'the world's most important oil chokepoint' and places its share of global oil trade at 20–21%. The math is straightforward: the BP Statistical Review of World Energy 2023 puts global oil consumption in 2022 at approximately 97.3 million barrels per day, meaning Hormuz throughput represents roughly 21.6% of that total — squarely in line with the 'one-fifth' framing.

One could argue the claim understates the strait's importance rather than overstates it. The Congressional Research Service, in its 2022 report 'The Strait of Hormuz and U.S. Policy' (R42335), describes it as the single most critical maritime chokepoint for global energy security. The International Energy Agency independently corroborates the one-fifth figure using the same 2022 throughput data. Three separate institutions — the EIA, IEA, and CRS — arrive at the same conclusion through independent analysis.

The steelman version of a skeptical challenge would be that 'global oil supply' and 'global oil trade' are not identical terms, since some oil is produced and consumed domestically without ever entering maritime trade. That distinction is real but does not undermine the claim. The EIA's 21% figure is calculated against total global petroleum liquids consumption, not just traded volumes — making it the more conservative and more meaningful denominator. If anything, the strait's share of seaborne oil trade alone is higher.

It is also worth noting what the figure does not claim. It does not say a Hormuz closure would immediately cut one-fifth of all oil from the global economy — strategic reserves, alternative routes, and demand destruction would all factor in. But as a measure of normal daily throughput relative to global consumption, the one-fifth figure is precise and well-sourced.

The manipulation pattern to watch for here runs in the opposite direction from most misinformation: this statistic is sometimes inflated further in crisis coverage, with phrases like 'a third of global oil' or 'nearly all Middle Eastern exports,' which go beyond what the data support. The accurate figure — 20–21% of global consumption — is dramatic enough on its own and does not need embellishment. When you see a Hormuz statistic that sounds larger than one-fifth, ask for the primary source and the denominator.