columns.width String |Number

The width of the column. Numeric values are treated as pixels. For more important information, please refer to Column Widths.

Example - set the column width as a string

 <div id="grid"></div>
 <script>
 $("#grid").kendoGrid({
   columns: [
     { field: "name", width: "200px" },
     { field: "age" }
   ],
   dataSource: [
     { name: "Jane Doe", age: 30 },
     { name: "John Doe", age: 33 }
   ]
 });
 </script>

Example - set the column width as a number

 <div id="grid"></div>
 <script>
 $("#grid").kendoGrid({
   columns: [
     { field: "name", width: 200 },
     { field: "age" }
   ],
   dataSource: [
     { name: "Jane Doe", age: 30 },
     { name: "John Doe", age: 33 }
   ]
 });
 </script>