
π This article includes 1 downloadable practice file β
In this article
DEC2HEX converts numbers to hex β the notation behind web colours and memory addresses.
Syntax
=DEC2HEX(number, [places])
| Argument | What it means |
|---|---|
places |
Pad with leading zeros. |
Examples
Example 1
="#"&DEC2HEX(A2,2)&DEC2HEX(B2,2)&DEC2HEX(C2,2)
RGB 255, 128, 0 becomes #FF8000.
DEC2HEX in practice
Where you will use it
- Colour codes for charts and HTML
- Memory addresses and device IDs
- Short hex codes from numbers
Worked example
| Number | Formula | Result |
|---|---|---|
| 255 | =DEC2HEX(A2) | FF |
| 4096 | =DEC2HEX(A3) | 1000 |
| 16777215 | =DEC2HEX(A4) | FFFFFF |
Results calculated in Excel.
Mistakes people make
| Mistake | What to do instead |
|---|---|
| Building colour codes in the wrong order | HTML is RRGGBB: DEC2HEX(R,2)&DEC2HEX(G,2)&DEC2HEX(B,2) |
| Lower-case expected | Wrap with LOWER |
Related functions
HEX2DEC Β· DEC2BIN
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π Practice files for this article
- πPractice workbook: Engineering & conversion15 tasks on realistic sales data β type your formula, the Check column turns green when it is right. Answers sheet included.β¬ XLSX Β· 34 KB
Free to use for learning. Files with macros (.bas) are plain text β import them with Alt+F11 β File β Import File, and always test on a copy.
Atul (AJ) builds office-automation and local-first AI tools as Atulya AI, and works with Excel, SAP and Oracle EPM every day. He writes about the shortcuts, macros and automations that actually save time β plus the occasional wacky fact. Videos on YouTube: Lazy Automator AI (@LazyAutomatorAI).
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