RIGHTB Function in Excel: Rightmost Bytes

RIGHTB Function in Excel: Rightmost Bytes 1
⏱ 1 min readUpdated 5 October 2026

TextLevel: ExpertAvailable in: Excel 2007+

In this article
  1. Syntax
  2. Examples
  3. Example 1
  4. RIGHTB in practice
  5. Where you will use it
  6. Worked example
  7. Mistakes people make
  8. Related functions

RIGHTB is the byte-based version of RIGHT; identical to RIGHT in English setups.

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Syntax

=RIGHTB(text,3)
Argument What it means
text Text to work on

Examples

Example 1

=RIGHTB(A2,3)

Result: bai. See the worked example table below for more cases.

RIGHTB in practice

Where you will use it

  • Japanese, Chinese or Korean data
  • Fixed-width files measured in bytes
  • Cleaning full-width characters from imported forms

Worked example

TextFormulaResult
Mumbai=RIGHTB(A2,3)bai
Excel=RIGHTB(A3,3)cel
12345=RIGHTB(A4,3)345

Results calculated in Excel. Calculated on an English (single-byte) Excel.

Mistakes people make

MistakeWhat to do instead
Expecting different results in EnglishIn single-byte setups the B versions match LEFT, LEN, etc.
Mixed-width dataNormalise with ASC first

LEFT · LEN · MID

📚 Part of the free Excel course: Beginner → Expert · Try it in the Formula Lab or ask the AI Helper.

Keep reading

Excel Functions A–ZROW Function in Excel: Row Number of a CellExcel Functions A–ZEXPAND Function in Excel: Grow an Array to a Fixed SizeExcel Functions A–ZIMPORTCSV Function in Excel: Import a CSV File Into the Grid
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