How many milliliters are in one US oil barrel?

One US oil barrel equals 158,987.294928 mL (approximately 158,987 mL). This derives from the exact definition: 1 bbl = 42 US gallons = 158.987294928 liters = 158,987.294928 mL.

How do I convert barrels to milliliters manually?

Multiply the number of barrels by 158,987.294928. For example, 2 bbl × 158,987.294928 = 317,974.59 mL.

What is the difference between an oil barrel and a beer barrel?

A US oil barrel equals 42 US gallons (158,987 mL). A US beer barrel equals 31 US gallons (117,348 mL). A UK barrel equals 36 imperial gallons (163,659 mL). This converter uses the US oil barrel as its base unit.

How many barrels is 1,000,000 mL?

1,000,000 mL equals approximately 6.2898 US oil barrels (divide mL by 158,987.294928).

Why are milliliters used instead of liters for barrel conversions?

Milliliters are preferred in pharmaceutical, laboratory, and food-science contexts where precise small-volume measurements matter. For large industrial volumes, liters or cubic meters are more practical.

Barrels to Milliliters Converter

Name: Barrels to Milliliters Converter
Availability: InStock
Author: Nham Vu

Enter US oil barrels to get the exact milliliter equivalent instantly, with reverse conversion and barrel-type reference included.

Converter

US oil barrels (bbl)

= — milliliters (mL)

Milliliters (mL) — reverse

= — barrels (bbl)

1 bbl = 158,987.294928 mL | 1 mL = 0.000006290 bbl

Common conversions

Barrels (bbl)	Milliliters (mL)

Barrel types reference

Type	Gallons	Milliliters
US oil barrel	42 US gal	158,987
US beer barrel	31 US gal	117,348
UK barrel	36 imp gal	163,659
US dry barrel	26.25 US gal	99,367

This converter uses the US oil barrel (42 US gallons).

Summary

Enter US oil barrels to get the exact milliliter equivalent instantly, with reverse conversion and barrel-type reference included.

How it works

Enter a value in US oil barrels in the top input field.
The milliliter result appears instantly — no button needed.
Use the reverse field to convert milliliters back to barrels.
Click "Copy" next to any result to copy it to your clipboard.
Check the barrel-type reference table to compare oil, beer, and UK barrel volumes.

Use cases

Convert crude oil storage volumes from barrels to milliliters for lab or pharmaceutical reporting.
Cross-check brewery batch sizes between US beer barrels and metric milliliter specs.
Calculate barrel-equivalent volumes when sourcing industrial liquids in milliliters.
Convert pipeline throughput from bbl/day to mL/min for process engineering.
Verify barrel volumes on international commodity invoices requiring metric units.
Translate oil barrel values into milliliters for chemistry or research datasets.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu