roman
Integer to Roman numerals converter
Decision gist · record as of 2026-08-14
Yes. Roman is a stable, zero-dependency utility with active maintenance and no known vulnerabilities. Install it if you need bidirectional Roman numeral conversion. The only caveat is the unclear license treatment—verify ZPL-2.1 compatibility with your project's licensing constraints before use.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later.
- Low friction installation with no runtime dependencies.
- Actively maintained with recent releases; last commit 2026-03-02 and version 5.2 released 2025-11-11.
License · maintenance · safety
ZPL-2.1 (unclear) — Licensed under Zope Public License (ZPL-2.1), classified as OSI-approved. License treatment is marked unclear in the metadata, so you may want to review the actual license terms before use in proprietary or restricted contexts.
last release 2025-11-11 (276 days) · last repo commit 2026-03-02 · 53 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 1,881,953 downloads/mo, #3,467 on PyPI
Alternatives
Verify before relying
import roman
# Convert integer to Roman numeral
print(roman.toRoman(10)) # X
# Convert Roman numeral to integer
print(roman.fromRoman('X')) # 10
# Command line: roman 972 → CMLXXII- Whether the unclear license treatment affects your intended use case—review ZPL-2.1 terms directly.
- Whether lowercase Roman numeral support (added in 5.0) meets your formatting requirements.
What it is and what it does
Roman is a lightweight converter between Arabic integers and Roman numerals. It provides both a Python API (toRoman and fromRoman functions) and a standalone CLI command for bidirectional conversion. The library handles standard Roman numeral notation and supports lowercase variants. It has no runtime dependencies and installs as a pure Python wheel.
The package is production-stable, actively maintained, and supports modern Python versions (3.10 through 3.14). It's useful for applications that need to display or parse Roman numerals—common in historical data, formal documents, or educational contexts. The CLI makes it accessible from shell scripts or manual conversion tasks.
Use it for
- Convert integers to Roman numerals for display in formal documents or historical applications.
- Parse Roman numeral input from users and convert back to integers for computation.
- Generate Roman numeral sequences for outline numbering, chapter markers, or copyright dates.
- Batch-convert large sets of numbers via the command-line interface in scripts or pipelines.
- Embed numeral conversion in educational software or tools that teach Roman numeral systems.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
Roman is a stable, zero-dependency utility with active maintenance and no known vulnerabilities. Install it if you need bidirectional Roman numeral conversion. The only caveat is the unclear license treatment—verify ZPL-2.1 compatibility with your project's licensing constraints before use.
Install
roman on PyPI
Before you install
Low friction installation with no runtime dependencies. Actively maintained with recent releases; last commit 2026-03-02 and version 5.2 released 2025-11-11. Supports current Python versions (3.10+) and drops older versions regularly.
Requires Python 3.10 or later.
License in practice
Licensed under Zope Public License (ZPL-2.1), classified as OSI-approved. License treatment is marked unclear in the metadata, so you may want to review the actual license terms before use in proprietary or restricted contexts.
Quickstart
import roman
# Convert integer to Roman numeral
print(roman.toRoman(10)) # X
# Convert Roman numeral to integer
print(roman.fromRoman('X')) # 10
# Command line: roman 972 → CMLXXIIVerify before relying
- Whether the unclear license treatment affects your intended use case—review ZPL-2.1 terms directly.
- Whether lowercase Roman numeral support (added in 5.0) meets your formatting requirements.
Package facts
| License | ZPL-2.1 unclear |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Actively maintained 276 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 1,881,953 / month, #3,467 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: Zope Public LicenseNatural Language :: EnglishOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: Implementation :: CPythonProgramming Language :: Python :: Implementation :: PyPy |
Evidence: roman-5.2-py3-none-any.whl
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See also cn2an · roman-numerals · roman-numerals-py · fastnumbers · base36 · bangla · kanjize · ummalqura · arabic-reshaper · uroman