Browse

ARABIC Function (LibreOffice Calc)

Math Beginner LibreOffice Calc LibreOffice 4.0

The ARABIC function in LibreOffice Calc converts a Roman numeral into an Arabic number. It supports classic and simplified Roman numeral formats and is the inverse of the ROMAN function.

The **ARABIC** function converts a Roman numeral (e.g., CDXCIX) into an Arabic number (e.g., 499) in LibreOffice Calc. It supports classic and simplified Roman numeral formats and is the inverse of the `ROMAN` function. ARABIC is useful for parsing labels, headings, outlines, and historical data.

This guide provides syntax, examples, advanced usage patterns, common errors, and best practices, making it one of the most complete ARABIC references available for LibreOffice Calc.

What the ARABIC Function Does

  • Converts Roman numerals → Arabic numbers
  • Accepts classic and simplified Roman numeral styles
  • Ignores case (uppercase/lowercase both valid)
  • Useful for parsing labels, outlines, and formatted text

It is designed to be robust, flexible, and universally compatible.

Syntax

ARABIC(text)

Arguments

  • text:
    A Roman numeral string (e.g., “XIV”, “MMXXIV”).

Basic Examples

Convert a Roman numeral to a number

=ARABIC("CDXCIX")

Returns 499.

Convert a cell value

=ARABIC(A1)

Lowercase input

=ARABIC("mmxxiv")

Returns 2024.

Simplified Roman numeral

=ARABIC("LDVLIV")

Returns 499.

Advanced Examples

Convert a list of Roman numerals

=ARABIC(A1)

Useful for outlines or imported data.

Convert Roman numeral page numbers

=ARABIC(A1)

Common in front‑matter parsing.

Validate Roman numeral input

=ISNUMBER(ARABIC(A1))

Returns TRUE if A1 contains a valid Roman numeral.

Convert Roman numerals in concatenated labels

=ARABIC(MID(A1; 9; 10))

Extracts and converts embedded Roman numerals.

Convert Roman numerals for sorting

=ARABIC(A1)

Allows numeric sorting of Roman‑labeled items.

Convert Roman numeral years

=ARABIC(A1)

Useful for historical datasets.

Combine with ROMAN for round‑trip conversion

=ROMAN(ARABIC(A1))

Ensures consistent formatting.

Common Errors and Fixes

Err:502 — Invalid argument

Occurs when:

  • text is not a valid Roman numeral
  • text contains invalid characters
  • text is empty
  • text is a number instead of a string

ARABIC returns 0

Occurs when:

  • text is an empty string
  • text is “0” (Roman numerals have no zero)

ARABIC returns unexpected results

Cause:

  • Simplified Roman numeral variants
  • Lowercase input (still valid)
  • Non-standard subtractive forms

Best Practices

  • Use ARABIC to parse Roman numeral labels and headings
  • Use ROMAN to generate Roman numerals
  • Validate input with ISNUMBER(ARABIC())
  • Avoid non-standard Roman numeral strings
  • Use UPPER() if consistent formatting is required
ARABIC is the perfect companion to ROMAN — together they let you convert, validate, and manipulate Roman numeral data with ease.
  • Use ROMAN to convert Arabic → Roman
  • Use TEXT for formatting numbers
  • Use UPPER to normalize Roman numeral input
  • Use CONCATENATE or & for building labels

By mastering ARABIC and its companion functions, you can work seamlessly with Roman numeral data in LibreOffice Calc — whether for formatting, parsing, or historical analysis.

Reproducible example (tested in LibreOffice Calc)

This standalone example was calculated in LibreOffice Calc 25.2.3.2 and matched the expected value. It is a practical cross-check of one usage, not proof that every example elsewhere on this page is correct.

=ARABIC("XIV")

Expected result: 14.

Convert a Roman numeral into an ordinary number.

If the result differs, check the referenced cells, argument separators and number formatting. For more information, consult the LibreOffice Calc official help.