How these conversions work
A hogshead was never a single worldwide standard, but the values used here match the most common documented sizes:
- US wine hogshead = 63 US gallons
- British wine hogshead = 52.5 imperial gallons ≈ 63.05 US gallons
If your source is British and pre-metric, pick the UK option. If you’re modern US / brewing / distilling, the 63 US gallon value is very common.
Formulas
US gal = hogshead × HHDUS
Imp gal = hogshead × HHDIMP
Example: 1.5 hogshead × 63 US gal = 94.5 US gal
hogshead = gallons ÷ hogshead_size
Example: 200 US gal ÷ 63 ≈ 3.1746 hogsheads
FAQ
1. My book says something like “beer hogshead” — is that the same?
Not always. Beer, ale and tobacco hogsheads have been recorded at other sizes. This tool lets you select a “beer-ish” cask to get close, but always check the original standard.
2. Can I get liters too?
Sure: once you have US gallons, multiply by 3.785411784; for imperial gallons multiply by 4.54609 to get liters.
3. Can I enter decimal hogsheads?
Yes — that’s how you’d handle half or quarter casks.
Formula (LaTeX) + variables + units
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US gal = hogshead × HHDUS Imp gal = hogshead × HHDIMP Example: 1.5 hogshead × 63 US gal = 94.5 US gal
hogshead = gallons ÷ hogshead_size Example: 200 US gal ÷ 63 ≈ 3.1746 hogsheads
- No variables provided in audit spec.
- NIST — Weights and measures — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/weights-and-measures - NIST — SI units — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/owm/metric-si/si-units
Last code update: 2026-01-19
- Initial audit spec draft generated from HTML extraction (review required).
- Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
- Confirm sources are authoritative and relevant to the calculator methodology.