Ancient VolumeRoman Modius to US Gallons

Roman modius to US gallons

Methodology·How We Verify

Snapshot

1 Roman modius equals 2.306222 US gallons.

Reference basis: This conversion uses one fixed ancient-volume reference value anchored to liters.
Example: For 5 Roman modius, the result equals 11.53111 US gallons.

Interactive conversion

Converter Calculator

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

2.306222 US gallons (gal (US))

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API and AI agent access

Roman modius to US gallons.

Machine-readable identifiers

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

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": "roman_modius",
  "to": "us_gallons"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "ancient-volume",
    "value": 1,
    "from": "roman_modius",
    "to": "us_gallons",
    "result": {
      "raw": 2.3062220170866357,
      "display": "2.306222"
    },
    "canonicalPath": "/ancient-volume/roman-modius-to-us-gallons/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

The converter converts Roman modius into US gallons using one fixed ancient-volume reference model. Formula: US gallons = Roman modius × 2.306222.

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Historical reference: this is a fixed modern approximation.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 Roman modius = 2.306222 US gallons.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Reference note

This Roman modius to US gallons 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

Roman modius (modius)	US gallons (gal (US))
1	2.306222
5	11.53111
10	23.06222
25	57.65555
100	230.622202
1000	2,306.222017

Questions & answers

Frequently Asked Questions

Is there a reverse US gallons to Roman modius page?

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