Convert US Oil Barrel to Metric Cup
Convert us oil barrels to metric cups instantly. 1 us oil barrel = 635.949179712 metric cup — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Metric Cup to US Oil Barrel converter for the reverse conversion.
Units explained
US Oil Barrel
The petroleum barrel is exactly 42 US gallons (158.987 L).
Set by the US petroleum industry in the 1860s and now a global oil-trade standard.
The standard unit for crude-oil pricing and production worldwide.
US oil industry, 1860s.
Metric Cup
A metric cup is exactly 250 milliliters.
Adopted with metrication in Australia, New Zealand and other countries.
Standard cooking cup in metric-recipe countries.
Metrication, 20th c.
US Oil Barrel to Metric Cup conversion formula
The relationship between us oil barrels and metric cups:
To convert us oil barrels to metric cups, multiply the value in us oil barrels by 635.949179712. To reverse, multiply metric cups by 0.0015724527.
How to use this converter
Type a value into the calculator. The result in metric cups updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Metric Cup to US Oil Barrel converter for the reverse direction.
Step-by-step: convert us oil barrels to metric cups
- Write down the value in us oil barrels (bbl (oil)).
- Multiply that value by the factor 635.949179712.
- The product is the equivalent value in metric cups (cup).
- To reverse, multiply the metric cup value by 0.0015724527.
Worked examples
Example 1 — Convert 1 bbl (oil) to cup:
1 × 635.949179712 = 635.949179712 cup
Example 2 — Convert 100 bbl (oil) to cup:
100 × 635.949179712 = 63594.9179712 cup
Real-world example — Macroscopic to microscopic
One us oil barrel equals a million metric cups. Optical engineers calculating coherence length compare macro-scale path lengths with micro-scale wavelength differences using exactly this conversion.
1 bbl (oil) × 635.949179712 = 635.949179712 cup
Real-world example — Sub-meter precision
A 0.001-us oil barrel (1 mm) tolerance equals 1,000 metric cups — useful for surface-finish specs, where macro-scale dimensions are given in the larger unit but feature roughness in the smaller.
0.001 bbl (oil) × 635.949179712 = 0.6359491797 cup
Real-world example — Macro-to-micro scale comparison
2 us oil barrels of measurement converts to a very large number in metric cups — useful in materials science when comparing bulk-sample dimensions to feature-level surface specs.
2 bbl (oil) × 635.949179712 = 1271.898359424 cup
US Oil Barrel to Metric Cup conversion table
Standard reference values for converting us oil barrels to metric cups:
| US Oil Barrel [bbl (oil)] | Metric Cup [cup] |
|---|---|
| 0.01 | 6.3594917971 |
| 0.1 | 63.5949179712 |
| 1 | 635.949179712 |
| 2 | 1271.898359424 |
| 3 | 1907.847539136 |
| 4 | 2543.796718848 |
| 5 | 3179.74589856 |
| 10 | 6359.49179712 |
| 20 | 12718.98359424 |
| 30 | 19078.47539136 |
| 40 | 25437.96718848 |
| 50 | 31797.4589856 |
| 100 | 63594.9179712 |
| 500 | 317974.589856 |
| 1000 | 635949.1797120001 |
Frequently asked questions
How many metric cups is 1 us oil barrel?
How do I convert us oil barrels to metric cups?
How do I convert metric cups back to us oil barrels?
How many metric cups is 100 us oil barrels?
Popular volume unit conversions
Convert US Oil Barrel to other volume units
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Metric / SI (8 units)
US Customary (Liquid) (7 units)
Imperial (UK) (4 units)
Cubic (length-derived) (3 units)
Cooking / Culinary (3 units)
Sources & references
Conversion factor (1 bbl (oil) = 635.949179712 cup) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.