What Oil Is Actually Used For
Roughly 60% of the world's ~100 million daily barrels moves things — cars, trucks, ships, planes. Most of the rest becomes the materials of modern life: plastics, fabrics, fertilizer, asphalt. Here's the breakdown, and why "peak gasoline" isn't "peak oil."
World Demand by Use (approximate shares)
| Sector | ≈% | Share | Notes |
|---|---|---|---|
| Road transport (gasoline & diesel) | 45% | Cars, trucks, buses — the biggest single use, and the one EVs are eroding | |
| Petrochemicals & feedstock | 14% | Plastics, synthetic fibers, fertilizer precursors — fastest-growing segment | |
| Aviation & shipping | 12% | Jet kerosene and marine bunker fuel — hardest to electrify | |
| Industry & heating | 12% | Process heat, mining, agriculture, buildings | |
| Other (asphalt, lubes, power) | 17% | Roads, lubricants, LPG for cooking, residual power generation |
Approximate shares synthesized from IEA/OPEC outlooks — the exact split varies by source and year. Related: what one barrel refines into · world oil demand · the peak oil debate.
What the United States Burns Each Week
| Product | Weekly demand, million b/d | Gallons per day | Change on the week | Week ending |
|---|---|---|---|---|
| Motor gasoline | 8.40 | 353 million | −0.36 | 2026-10-09 |
| Distillate (diesel and heating oil) | 4.30 | 181 million | +0.67 | 2026-10-09 |
| Jet fuel | 1.60 | 67 million | −0.07 | 2026-10-09 |
EIA weekly product supplied, the standard demand estimate (million barrels a day; one barrel is 42 gallons). It is noisy from week to week. World totals and growth: world oil demand.
What a Barrel of Crude Costs, in Different Units
WTI close Oct 19| Unit | Crude cost at today's WTI | Conversion |
|---|---|---|
| Per barrel | $97.97 | the quoted futures price |
| Per gallon | $2.33 | ÷ 42 gallons a barrel |
| Per litre | $0.616 | ÷ 158.987 litres a barrel |
| Per million Btu | $16.89 | ÷ about 5.8 MMBtu a barrel |
Crude is only the raw material: the refining margin, distribution and taxes sit on top before it reaches a pump or a factory. How a gallon of gasoline is built up: why gas prices are high; the refining margin itself: crack spread.
Oil Uses FAQ
What is oil mainly used for?
Transport, overwhelmingly: gasoline, diesel and jet fuel account for roughly 60% of world oil demand. The rest splits between petrochemical feedstock (plastics, fertilizers, synthetic materials — the fastest-growing use), industrial and heating fuel, asphalt and lubricants. Only a small share still generates electricity.
What everyday products are made from petroleum?
Far more than fuel: virtually all plastics, synthetic fabrics (polyester, nylon), tires, asphalt roads, detergents, paints, cosmetics, candles, fertilizers and pesticides (via natural gas and naphtha), and pharmaceutical ingredients — aspirin's precursors historically came from petrochemicals. A typical car contains hundreds of pounds of petroleum-derived plastics before the tank is ever filled.
Will plastics keep oil demand growing even as EVs spread?
That is the industry's central bet. Petrochemical feedstock is the fastest-growing demand segment in every major outlook, driven by emerging-market consumption of plastics and packaging — which is why forecasters who see transport fuel peaking still project total oil demand plateauing rather than collapsing.
How much of a barrel becomes gasoline versus other products?
A typical US refinery turns a 42-gallon barrel into roughly 19–20 gallons of gasoline, 12 of diesel/heating oil, 4 of jet fuel and about 10 of everything else (LPG, asphalt, petrochemical feedstock, lubricants). The full yield table is on the barrel-of-oil page.