US Gallons to Barrels Converter

Enter a US gallon value and instantly get the equivalent in petroleum barrels (1 bbl = 42 US gal).

Enter US Gallons

Quick Reference Table

US Gallons Barrels (bbl)
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Summary

Enter a US gallon value and instantly get the equivalent in petroleum barrels (1 bbl = 42 US gal).

How it works

  1. Enter a volume in US liquid gallons in the input field.
  2. The converter divides your input by 42 — the exact number of US gallons in one petroleum barrel.
  3. The result in barrels (bbl) is shown immediately.
  4. Use the reference table to look up common gallon-to-barrel values at a glance.

Use cases

  • Convert crude oil or fuel volumes between gallons and barrels for trading or logistics.
  • Calculate petroleum storage tank capacity in barrels.
  • Verify shipment quantities when switching between US and oil-industry units.
  • Convert fuel delivery orders expressed in gallons to barrel counts.
  • Cross-check pipeline throughput figures reported in different unit systems.
  • Estimate barrel yield from a known gallon volume of refined product.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu