Capacity management - Column limits

Limit	Maximum value	Limit type	Size per column	Notes
Single line of text	276	Threshold	28 bytes	SQL Server row wrapping occurs after each 64 columns in a SharePoint list. The default row wrapping value of six allows for a maximum of 384 Single line of text columns per SharePoint list (6 * 64 = 384). However, because the limit per SharePoint list item is 8,000 bytes, of which 256 bytes are reserved for built-in SharePoint columns, the actual limit is 276 Single line of text columns.
Multiple Lines of Text	192	Threshold	28 bytes	SQL Server row wrapping occurs after each 32 columns in a SharePoint list. The default row wrapping value of six allows for a maximum of 192 Multiple lines of text columns per SharePoint list (6 * 32 = 192).
Choice	276	Threshold	28 bytes	SQL Server row wrapping occurs after each 64 columns in a SharePoint list. The default row wrapping value of 6 allows for a maximum of 384 Choice columns per SharePoint list (6 * 64 = 384); ); however because the limit per SharePoint list item is 8,000 bytes, of which 256 bytes are reserved for built-in SharePoint columns, the actual limit should be 276 Choice columns.
Number	72	Threshold	12 bytes	SQL Server row wrapping occurs after each 12 columns in a SharePoint list. The default row wrapping value of six allows for a maximum of 72 Number columns per SharePoint list (6 * 12 = 72).
Currency	72	Threshold	12 bytes	SQL Server row wrapping occurs after each 12 columns in a SharePoint list. The default row wrapping value of six allows for a maximum of 72 Currency columns per SharePoint list (6 * 12 = 72).
Date and Time	48	Threshold	12 bytes	SQL Server row wrapping occurs after each eight columns in a SharePoint list. The default row wrapping value of six allows for a maximum of 48 Date and Time columns per SharePoint list (6 * 8 = 48).
Lookup	96	Threshold	4 bytes	SQL Server row wrapping occurs after each 16 columns in a SharePoint list. The default row wrapping value of six allows for a maximum of 96 single value Lookup columns per SharePoint list (6 * 16 = 96).
Yes / No	96	Threshold	5 bytes	SQL Server row wrapping occurs after each 16 columns in a SharePoint list. The default row wrapping value of six allows for a maximum of 96 Yes / No columns per SharePoint list (6 * 16 = 96).
Person or group	96	Threshold	4 bytes	SQL Server row wrapping occurs after each 16 columns in a SharePoint list. The default row wrapping value of six allows for a maximum of 96 Person or Group columns per SharePoint list (6 * 16 = 96).
Hyperlink or picture	138	Threshold	56 bytes	SQL Server row wrapping occurs after each 32 columns in a SharePoint list. The default row wrapping value of six allows for a maximum of 192 Hyperlink or Picture columns per SharePoint list (6 * 32 = 192) ); however because the limit per SharePoint list item is 8,000 bytes, of which 256 bytes are reserved for built-in SharePoint columns, the actual limit should be 138 Hyperlink or Picture columns.
Calculated	48	Threshold	28 bytes	SQL Server row wrapping occurs after each eight columns in a SharePoint list. The default row wrapping value of six allows for a maximum of 48 Calculated columns per SharePoint list (6 * 8 = 48).
GUID	6	Threshold	20 bytes	SQL Server row wrapping occurs after each column in a SharePoint list. The default row wrapping value of six allows for a maximum of 6 GUID columns per SharePoint list (6 * 1 = 6).
Int	96	Threshold	4 bytes	SQL Server row wrapping occurs after each 16 columns in a SharePoint list. The default row wrapping value of six allows for a maximum of 96 Int columns per SharePoint list (6 * 16 = 96).
Managed metadata	94	Threshold	40 bytes for the first, 32 bytes for each subsequent	The first Managed Metadata field added to a list is allocated four columns: A lookup field for the actual tag A hidden text field for the string value A lookup field for the catch all A lookup field for spillover of the catch all Each subsequent Managed Metadata field added to a list adds two more columns: A lookup field for the actual tag A hidden text field for the string value The maximum number of columns of Managed Metadata is calculated as (14 + (16 * (n-1))) where n is the row mapping value (default of 6).