
Understanding how crude oil prices transform from a global commodity cost into the price we pay at the pump is essential for consumers and businesses alike. Many are aware that oil is priced internationally in US dollars, but fewer know how this translates into pence per litre in the UK. In this blog, we break down the process using a simple, visual infographic and clear steps.
Why Is Crude Oil Priced in USD?
Crude oil is traded globally, and the US dollar is the standard currency for international oil markets. This means any changes in the value of the pound relative to the dollar can significantly impact the price of fuel in the UK.
Step-by-Step Breakdown
Let’s say crude oil is priced at $600 per metric tonne. How does that end up as a price per litre at the UK forecourt? Here are the key steps:
1. Convert Tonnes to Litres
Crude oil density varies by grade, but a general conversion is:
- 1 tonne = ~1,176 litres This is based on an average density of 0.85 kg/litre.
2. Currency Conversion
Using an exchange rate of 1 USD = 0.80 GBP:
- $600/tonne → £480/tonne
3. Convert to Price Per Litre
- £480 ÷ 1,176 litres ≈ £0.408/litre or 40.8p/litre This gives us the raw material cost.
4. Add UK Costs and Taxes
To this base price, we need to add:
- Refining costs: ~7p
- Distribution and retail margins: ~6p
- Fuel duty: 52.95p
- VAT (20%): calculated on the subtotal
5. Total Pump Price Estimate
All together:
- Subtotal before VAT = 40.8p + 7p + 6p + 52.95p = 106.75p
- VAT (20%) = 21.35p
- Final pump price = ~128.1p/litre
Visual Infographic
To help make this easier to digest, we’ve created a flowchart-style infographic that walks you through the process. Feel free to download and share it from the image below:

Why This Matters
Fuel prices can feel unpredictable, but once you understand the multiple layers involved—from global oil markets to local taxation—you’re better equipped to interpret changes and plan ahead. This breakdown also helps businesses explain fluctuations to customers or factor costs into pricing strategies.
