This article is about Looker Studio. For Looker documentation, visit

Create, edit, and manage blends

How to edit and configure blended data.
In this article:

You can create blends automatically or manually:

Automatically blend selected charts

A user adds a table with blended data to a report by highlighting a time series chart and a pie chart and selecting the Blend data option from the right-click menu.

  1. Edit your report.
  2. Add charts based on the data sources you want to blend. For each chart, include the fields you want to include in the blend.
  3. Select the charts you want to include in the blend.
    1. You can blend up to 5 charts.
    2. Right click on the selected charts, then click Blend data.

Looker Studio generates a new chart that combines the fields from the selected charts. You can use that blended chart in your reports just like any other chart.

Example: create a ratio metric

Blending 2 scorecards automatically creates a ratio metric, using the first chart you select as the numerator and the second chart as the denominator. For example, blending Costs and Clicks metrics automatically calculates your cost-per-click ratio:

A user creates a blended Cost/Clicks scorecard by selecting the Cost and Clicks scorecards on a report and right-clicking to select the Blend data option.

  1. Cost scorecard. Select this chart first.
  2. Clicks scorecard. Select this chart second, then right click and select Blend data.
  3. Blended Cost / Clicks scorecard. Change the Type to Currency and adjust the Decimal precision to 4 places.

See a more complete example here

Create blends manually

The two ways to create blends manually are:

  • Select a component on the page, then in the properties panel on the right, under Data source, click +BLEND DATA.
  • Open the Resources > Manage blends menu, and in the bottom left, click Add blend.

Edit blends you've already created

  1. Edit your report.
  2. Select a chart based on a blend.
  3. Click Edit Edit pencil for that chart's data source.

You can also edit blends by clicking the Resource > Manage blended data menu option. Locate the blend in the list and click EDIT.

Add a table to the blend

  1. To the right of the rightmost table in the blend, click Join another table.
  2. Select a data source.
  3. Add fields to the table by clicking Add dimension or Add metric, or by dragging the field from the fields drawer. If the drawer is closed, open it by clicking Chevron right..
  4. To create a calculated field in the table, click Add dimension or Add metric, then click +Create field.
Tip: You can join tables based on calculated fields. This can be useful if the data you want to join on isn't perfectly aligned between the tables (for example, different capitalization or formatting used in a customer ID).
  1. Click the join configuration between the new table and the table to the left to set up the join between those tables.

Move and remove tables

Tables you add to the blend always appear on the right. To reorder the tables in the blend:

  1. Click More More for the table you want to move.
  2. Select Shift left/right.
Alert: Moving tables could break your join conditions, requiring you to reconfigure the join. To restore the previous join condition, move the table back to its original position.

To remove a table from the blend:

  1. Click More More for the table you want to remove.
  2. Select Remove.
Tip: Removing a table has no effect on the data sources or on other blends in the report.

Add and edit join configurations

Each table in the blend is joined by a set of matching fields (the join conditions) and a join operator. To add or edit this configuration:

  1. Click the join configuration box between 2 tables.
  2. Select a join operator.
  3. Define the join condition by adding the dimensions that contain the data you want to join on. Note that the cross join operator doesn't use a join condition.
  4. Click Save.

Missing fields in join conditions

Join configuration icon highlighted in red on the Blend Data panel indicates that a join configuration is not specified.A red box around the join configuration, or a pink "Missing" field in the join condition indicates that Looker Studio can't join your data with the currently selected dimensions. To fix this, add the missing field to the table before configuring the join condition, or remove the missing field.

Set a date range for a table in the blend

You have 2 options when setting a date range on a table in the blend:

  • Auto - Use the date range of the chart that gets its data from this blend.
  • Custom - Override the chart's date range with the range you select.

Apply a filter to a table in the blend

Limit the data contained in a table by applying a filter. You can create a new filter, or apply an existing filter to a table in the blend as long as that filter is based on fields that exist in the table.

Get more in-depth information about filters and date ranges in blends.

Create calculated fields in a blend

Tables in a blend can include calculated fields. This can be particularly useful as a way of creating join conditions when the data isn't perfectly compatible between tables (for example, when the join fields contain differently formatted dates or capitalized strings).

Show me how to add a calculated field

  1. Choose a table in the blend.
  2. Click Add dimension or Add metric.
  3. Click CREATE FIELD.
  4. Type in the formula in the editor window, then click APPLY.

Animated gif showing how to add a calculated field to a blend table. The formula used is Views / Event count.

Note: When you're creating calculated fields in a table in the blend, the formula can only reference fields found in that table. For example, a calculated field in Table 1 can't reference fields in Table 2.

To create a calculated field based on fields from different data sources, add those fields to their respective tables in the blend, then create a chart-specific calculated field.

Rename a table

Click a current table name, then type a new name.

If you have fields in the blend with duplicate names, you'll see the table name from which those fields are derived in the lists of available dimensions and metrics.

Rename a blend

On the right, above the list of fields in the blend, click the current blend name, then type a new name.

Reconnect a table

Underneath the table name, click the drop-down menu and select a new data source for this table.

Alert: Selecting a data source whose fields don't match the current data source for the table may break the blend configuration. You'll need to remove or replace any invalid fields.

Manage blended data

Use the Resource > Manage blended data menu to access all the blends contained in the current report. You can create new blends and edit, copy, or remove existing blends from this page.

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