Ancient VolumeUS Gallons to Roman Amphora

US gallons to Roman amphora

Methodology·How We Verify

Snapshot

1 US gallon equals 0.145649 Roman amphora.

Reference basis: This conversion uses one fixed ancient-volume reference value anchored to liters.
Example: For 5 US gallons, the result equals 0.728244 Roman amphora.

Interactive conversion

Converter Calculator

Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

0.145649 Roman amphora (amphora)

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API and AI agent access

US gallons to Roman amphora.

Machine-readable identifiers

Conversion family: ancient-volume
Source unit: us_gallons
Target unit: roman_amphora

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "ancient-volume",
  "value": 1,
  "from": "us_gallons",
  "to": "roman_amphora"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "ancient-volume",
    "value": 1,
    "from": "us_gallons",
    "to": "roman_amphora",
    "result": {
      "raw": 0.14564877968449405,
      "display": "0.145649"
    },
    "canonicalPath": "/ancient-volume/us-gallons-to-roman-amphora/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

The converter converts US gallon into Roman amphora using one fixed ancient-volume reference model. Formula: Roman amphora = US gallon × 0.145649.

Ancient volume measures varied across places and periods, so this page keeps one canonical approximation for modern reference rather than implying a single historical standard across all use cases.

Historical reference: this is a fixed modern approximation. A specific period, locality and primary measurement source have not been established for every unit in this dataset. Check those details before applying it to an artifact or historical record.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 US gallon = 0.145649 Roman amphora.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Reference note

This US gallons to Roman amphora page uses a single canonical historical factor model for consistency across calculator and table values.

Historical measures may differ across regions and time periods.
This converter keeps one fixed definition so mirror pages remain internally consistent.
Use this as a practical reference baseline, then compare with specialized historical sources if needed.

Common Conversion Values

US gallons (gal (US))	Roman amphora (amphora)
1	0.145649
5	0.728244
10	1.456488
25	3.641219
100	14.564878
1000	145.64878

Questions & answers

Frequently Asked Questions

Is there a reverse Roman amphora to US gallon page?

Yes. Use the mirror Roman amphora to US gallon page to convert in the opposite direction with the same fixed reference model.