Properties: Supported Data Types

Mixpanel supports five data types for properties: string, numeric, boolean, date and list.

The images represent how each data type will appear in the properties drop-down in Mixpanel reports so that you can distinguish the type of property you select:

  String

Mixpanel will treat any value sent that doesn’t match any other data type as a string. In reports, Properties sent as strings will allow Events to be broken out by each unique value.

Example:

mixpanel.track('Account Created', {'Account Type': 'Paid'});

String properties have a field size character limit of 255 bytes. 

  Numeric

Mixpanel treats any value that is a number (whether integer or decimal) as a numeric Property. Reports can display numeric Properties as histograms.

Example:

mixpanel.track('Application Loaded', {'Load Time (seconds)': 1.231});

  Boolean

Mixpanel treats Properties as booleans if the value is either the JSON constant true or false.

Example:

mixpanel.track('Played Video', {'Ad Included': true});

  Date

To guarantee appropriate typecasting across all Mixpanel reports, use the date format YYYY-MM-DDTHH:MM:SS. Make sure you’re sending dates in this format by using the .toISOString method in JavaScript if possible, which will also ensure dates are sent to Mixpanel in UTC.

If you send a unix timestamp as a date, Mixpanel will treat it as an integer; however, in the Mixpanel UI, you can force it to be treated as a date (see Typecasting section below).

Note: A property value that is formatted as a date will be passed as a date type.

Example:

mixpanel.track('Account Created', {'Date First Seen': '2016-06-01T12:34:56'});

  List

Send a list of values as a JSON array.

Example:

mixpanel.track(
  'Order Successful',
  {'Products': ['Jacket', 'Helmet', 'Gloves']}
);

List properties are subject to limits solely based on serialized size. For events, the total list size cannot exceed 8 KB for events. For profiles, the total list size cannot exceed 256 KB. Additionally, each item in the list cannot exceed 255 bytes.

See the List Type Operators section below to learn how list properties can be used to filter events or user profiles in reports. You can also visit our guide on List Property Support for more detailed information.

Typecasting

Mixpanel allows you to force Properties into another data type by using the "Data Type" option in the overflow menu for property filters and breakdowns.

Typecasting is helpful when one of your properties is a number but is sent to Mixpanel as a string and you want to see histogram data for that property. Or if one of your properties is a unix timestamp and got sent as a number, and you want it to be treated as a date Property instead.

Data Type Operators

Every data type has a different set of operators to choose from when you filter by a property of that data type. All filters are of the form:

Each operator matches all events or user profiles for which the property value matches the operand. For example, if you’re looking for all users for whom the value of a string property, say “Account Type”, contains a specific word, say “Premium”, then you would use the following filter: “Account Type contains Premium”.

Use the tables below as a reference for how each data type and operator works:

String Type Operators

Number Type Operators

Boolean Type Operators

List Type Operators

List properties support two special operators: Any and All. These operators can be combined with the full range of string operators (shown above) to create filters that match individual elements in a list.

Please note that any elements in the list that are not strings, will be type-casted to strings. For more information on list properties, see our guide to List property support.

Date Type Operators