How to Do Alt + H B M on Mac in Excel (Easiest Way)

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Quick Answer

To do Alt + H B M on Mac in Excel, download and install Accelerator Keys, then press Option, followed by H, B, and M.

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Command: More Borders (Format Cells Dialog)

Step-by-Step Guide

  1. Download and install Accelerator Keys (14-day free trial, no credit card required).
  2. Follow the simple on-screen setup instructions (just a few clicks).
  3. Press the Option key (works like Alt on Windows).
  4. Press H, B, M to complete the shortcut.

This is how to do Alt + H B M on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.

What Does Alt + H B M Do in Excel?

Alt + H B M opens the Format Cells dialog directly to the Border tab, giving you access to advanced border customization options. Here you can choose custom line styles (dotted, dashed, double, etc.), select specific colors for borders, apply borders to individual sides with precision, and create diagonal borders through cells. This is the go-to option when the quick border presets don’t meet your needs.

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