Material React Table

Material React Table lets you easily change the default widths (sizes) of columns and has a built-in column resizing draggable handle feature.

Upgrade to MRT v1.7.0 for big column resizing performance improvements!

'onEnd' | 'onChange'

'onChange'

Partial<MRT_ColumnDef<TData>>

boolean

 OnChangeFn<ColumnSizingState>

OnChangeFn<ColumnSizingInfoState>

boolean

number

1000

number

40

number

180

Record<string, number>

{}

See TanStack Docs

{}

This was also covered in the Data Columns Guide, but we'll cover it again here.

You can change the width of any column by setting its size option on the column definition. minSize and maxSize are also available to enforce limits during resizing.

const columns = [
  {
    accessorKey: 'id',
    header: 'ID',
    size: 50, //small column
  },
  {
    accessorKey: 'username',
    header: 'Username',
    minSize: 100, //min size enforced during resizing
    maxSize: 400, //max size enforced during resizing
    size: 180, //medium column
  },
  {
    accessorKey: 'email',
    header: 'Email',
    size: 300, //large column
  },
];

You may notice, however, that the column sizes might not change as much as you would expect. This is because the browser treats <th> and <td> elements differently with in a <table> element by default.

You can improve this slightly by changing the table layout to "fixed" instead of the default "auto" in the muiTableProps. Though note that this only works if you are using the default "semantic" layout mode (and no virtualization features).

<MaterialReactTable
  muiTableProps={{
    sx: {
      tableLayout: 'fixed',
    },
  }}
/>

The columns will still try to increase their width to take up the full width of the table, but the columns that do have a defined size will have their width respected more.

For further reading on how table-layout fixed vs auto works, we recommend reading this blog post by CSS-Tricks.

If you are using either virtualization features or have the layoutMode set to "grid", another option is to turn off flex grow for both the table head and body cells. You can see this down below at the bottom of this page

By default, columns will have the following size properties defined:

defaultColumn = { minSize: 40, maxSize: 1000, size: 180 }; //units are in px

You can modify the default column widths by setting the defaultColumn prop on the table.

<MaterialReactTable
  columns={columns}
  data={data}
  defaultColumn={{
    minSize: 20, //allow columns to get smaller than default
    maxSize: 9001, //allow columns to get larger than default
    size: 260, //make columns wider by default
  }}
/>

enableColumnResizing is the boolean prop that enables the column resizing feature.

<MaterialReactTable columns={columns} data={data} enableColumnResizing />

You can disable specific columns from being resizable by setting the enableResizing column option to false in their respective column definition.

When Column Resizing is enabled and the layoutMode is still set to the default "semantic" value, a CSS table-layout: fixed style is automatically added to the <table> element in order to make the browser respect the widths of the columns more.

The default columnResizeMode was changed to "onChange" in v1.7.0 instead of "onEnd" because most of the column resizing performance issues were fixed.

The default columnResizeMode is onChange (in MRT versions v1.7+), which means that the column resizing will occur immediately as the user drags the column resize handle. If you are running into performance issues because of many other enabled features, you might want to set the columnResizeMode to onEnd instead. This will make the column resizing only occur after the user has finished dragging the column resize handle and released their mouse.

<MaterialReactTable
  columns={columns}
  data={data}
  enableColumnResizing
  columnResizeMode="onEnd" //instead of the default "onChange" mode
/>

1import React, { useMemo } from 'react';
2import MaterialReactTable, { MRT_ColumnDef } from 'material-react-table';
3import { data, Person } from './makeData';
4
5const Example = () => {
6  const columns = useMemo<MRT_ColumnDef<Person>[]>(
7    () => [
8      {
9        accessorKey: 'firstName',
10        header: 'First Name', //uses the default width from defaultColumn prop
11      },
12      {
13        accessorKey: 'lastName',
14        header: 'Last Name',
15        enableResizing: false, //disable resizing for this column
16      },
17      {
18        accessorKey: 'email',
19        header: 'Email Address',
20        size: 200, //increase the width of this column
21      },
22      {
23        accessorKey: 'city',
24        header: 'City',
25        size: 120, //decrease the width of this column
26      },
27      {
28        accessorKey: 'country',
29        header: 'Country',
30        size: 100, //decrease the width of this column
31      },
32    ],
33    [],
34  );
35
36  return (
37    <MaterialReactTable
38      columns={columns}
39      data={data}
40      //optionally override the default column widths
41      defaultColumn={{
42        maxSize: 400,
43        minSize: 80,
44        size: 150, //default size is usually 180
45      }}
46      enableColumnResizing
47      columnResizeMode="onChange" //default
48    />
49  );
50};
51
52export default Example;
53

New in v1.7

If you want to prevent the columns from growing to fill the width of the table, use this flexbox trick when the layoutMode is "grid":

<MaterialReactTable
  columns={columns}
  data={data}
  enableColumnResizing
  layoutMode="grid" //instead of the default "semantic" layout mode
  muiTableHeadCellProps={{
    sx: {
      flex: '0 0 auto',
    },
  }}
  muiTableBodyCellProps={{
    sx: {
      flex: '0 0 auto',
    },
  }}
/>

1import React, { useMemo } from 'react';
2import MaterialReactTable, { MRT_ColumnDef } from 'material-react-table';
3import { data, Person } from './makeData';
4
5const Example = () => {
6  const columns = useMemo<MRT_ColumnDef<Person>[]>(
7    () => [
8      {
9        accessorKey: 'firstName',
10        header: 'First Name',
11      },
12      {
13        accessorKey: 'lastName',
14        header: 'Last Name',
15      },
16      {
17        accessorKey: 'email',
18        header: 'Email Address',
19        size: 300,
20      },
21    ],
22    [],
23  );
24
25  return (
26    <MaterialReactTable
27      columns={columns}
28      data={data}
29      enableColumnResizing
30      layoutMode="grid"
31      //Disables the default flex-grow behavior of the table cells
32      muiTableHeadCellProps={{
33        sx: {
34          flex: '0 0 auto',
35        },
36      }}
37      muiTableBodyCellProps={{
38        sx: {
39          flex: '0 0 auto',
40        },
41      }}
42      //
43    />
44  );
45};
46
47export default Example;
48

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