How to align <td rowspan ="value"> value to center vertically?

use <td rowspan="4" align="center">4</td> its work

table td {
  padding: 5px;
}

<table border="1">
  <tr>
    <td>A</td>
    <td>B</td>
    <td>C</td>
    <td>D</td>
  </tr>
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
    <td rowspan="4" align="center">4</td>
  </tr>
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
  </tr>
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>

  </tr>
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
  </tr>

</table>

You easily do it with css using CSS selectors and the vertical-align property.

Any td or th by default has a rowspan = 1.

To position the rowspan'd td text in the center, just do this: Taking an example of rowspan = "3"

td[rowspan = "3"] {
    vertical-align: middle;
}

If you want to make it generic, just use it as below:

th[rowspan]:not([rowspan="1"]) {
    vertical-align : middle;
}

Try :

<td style="vertical-align : middle;text-align:center;">