## Conversion Table

Root Em | Viewport Maximum |
---|---|

0.01rem | 0.0083vmax |

0.03rem | 0.0250vmax |

0.05rem | 0.0417vmax |

0.08rem | 0.0667vmax |

0.1rem | 0.0833vmax |

0.15rem | 0.1250vmax |

0.2rem | 0.1667vmax |

0.5rem | 0.4167vmax |

0.625rem | 0.5208vmax |

0.75rem | 0.6250vmax |

0.875rem | 0.7292vmax |

1rem | 0.8333vmax |

1.125rem | 0.9375vmax |

1.25rem | 1.0417vmax |

1.375rem | 1.1458vmax |

1.5rem | 1.2500vmax |

1.625rem | 1.3542vmax |

1.75rem | 1.4583vmax |

1.875rem | 1.5625vmax |

2rem | 1.6667vmax |

2.125rem | 1.7708vmax |

2.25rem | 1.8750vmax |

2.375rem | 1.9792vmax |

2.5rem | 2.0833vmax |

2.625rem | 2.1875vmax |

2.75rem | 2.2917vmax |

2.875rem | 2.3958vmax |

3rem | 2.5000vmax |

3.125rem | 2.6042vmax |

3.25rem | 2.7083vmax |

3.375rem | 2.8125vmax |

3.5rem | 2.9167vmax |

3.625rem | 3.0208vmax |

3.75rem | 3.1250vmax |

3.875rem | 3.2292vmax |

4rem | 3.3333vmax |

5rem | 4.1667vmax |

6rem | 5.0000vmax |

8rem | 6.6667vmax |

10rem | 8.3333vmax |

15rem | 12.5000vmax |

20rem | 16.6667vmax |

30rem | 25.0000vmax |

40rem | 33.3333vmax |

50rem | 41.6667vmax |

60rem | 50.0000vmax |

80rem | 66.6667vmax |

100rem | 83.3333vmax |

## Differences Between rem and vmax

Root Em (rem) is a relative unit that scales according to the root element's font size, typically the HTML element. Viewport Maximum (vmax) is a relative unit that scales based on the larger dimension of the viewport, whether it be width or height. One vmax unit is equal to 1% of the larger viewport dimension, making it useful for responsive design.

## Advantages of Using rem

Using rem units allows for better scalability and consistency across different screen sizes and resolutions. Since rem is relative to the root element's font size, adjusting the font size of the root element will proportionally scale all elements using rem units. This is particularly useful for responsive design and accessibility, as it respects user preferences for font size.

## How to Convert rem to vmax

To convert rem to vmax, you need to know the root element's font size and the larger dimension of the viewport. The formula for conversion is:

`vmax = (rem * root font size) / (larger viewport dimension / 100)`

For example, to convert 2rem to vmax, assuming the root font size is 16px and the larger viewport dimension is 1000px:

`2rem * 16px / (1000px / 100) = 3.2vmax`

## Frequently Asked Questions

### Why should I use rem instead of vmax?

Using rem allows for more scalable and consistent layouts across different screen sizes and user settings, improving accessibility.

### How do I set the root font size?

You can set the root font size using CSS on the HTML element. For example:

```
html {
font-size: 16px;
}
```

### Can I use rem for all elements?

Yes, you can use rem for most elements to ensure consistency. However, for elements that need to scale with the larger dimension of the viewport, vmax might be more suitable.