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Custom value formatting lets you specify how dimension, metric, and calculated field values appear in charts without sending additional SQL queries to your database. Custom value formatting also includes the option for report creators and editors to specify a value format using Google Sheets style formats.
Custom value formatting can be helpful in these use cases:
You want to quickly change how dates and number values are displayed in charts and tooltips.
You need to display values in a specific way that won't be satisfied by changing the data type.
You want to provide additional context to report viewers about values in charts and tooltips.
For example, you can choose to display large values as exponents and append text to the values. The following column chart displays Population grouped by Country. You can use custom formatting to display the large values as exponents with the text "People" appended to provide additional context to report viewers.
This page provides an overview of custom value formatting. It includes the following sections:
In the Setup tab of the Properties panel, click a field's data type icon to open the field's edit menu.
Choose a value format option in the Display Format drop-down menu. If you'd like to specify a custom format, choose Custom value format to open the Custom number format menu.
Enter a custom value format using Google Sheets style notation in the Custom number format text field, or select a value format option.
A preview of the value format will be displayed under the Custom number format text field.
Once you have selected or entered the desired format, click Apply.
Click outside of the field's edit menu and return to the chart Setup properties.
Repeat steps 3-7 to edit a field's custom value formatting.
Add or edit chart-specific custom value formatting for calculated fields
To add custom value formatting to calculated field values on a chart, follow these steps:
In the Setup tab of the Properties panel, create a calculated field. Alternatively, edit an existing calculated field by hovering over the calculated field name and clicking field's data type icon.
If you create a new dimension type calculated field, click Apply after you enter the desired expression. The calculated field editor will not detect the field type until you click Apply,
Choose a value format option in the Display Format drop-down menu. If you'd like to specify a custom format, choose Custom value format to open the Custom number format menu.
Enter a custom value format using Google Sheets style notation in the Custom number format text field, or select a value format option.
A preview of the value format will display under the Custom number format text field.
Once you have selected or entered the desired format, click Apply.
Click outside of the calculated field's edit menu and return to the chart Setup properties.
Repeat steps 3-7 to edit a calculated field's custom value formatting.
Things to know about custom value formatting
Custom formatting that is applied to chart values will be disabled when the Compact numbers setting is enabled. The Compact numbers setting is available when the Show data labels option is enabled on the Style tab of a chart's Properties panel.
Similarly, the Compact numbers setting will be disabled if custom formatting is applied to chart values.
Chart-specific value formatting will only exist in the chart in which it is applied. You can't directly reuse chart-specific value formatting.
However, you can copy a chart that uses custom value formatting. The copy will contain any custom value formatting defined in the original.
Looker Studio does not support conditional expressions in custom value formatting.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-25 UTC."],[],[],null,["# Format fields in reports\n\nCustom value formatting lets you specify how dimension, metric, and calculated field values appear in charts without sending additional SQL queries to your database. Custom value formatting also includes the option for report creators and editors to specify a value format using [Google Sheets style formats](https://support.google.com/docs/answer/56470).\n| **Important:** Looker Studio does not support conditional expressions in custom value formatting.\n\nCustom value formatting can be helpful in these use cases:\n\n- You want to quickly change how dates and number values are displayed in charts and tooltips.\n- You need to display values in a specific way that won't be satisfied by changing the [data type](/looker/docs/studio/data-types).\n- You want to provide additional context to report viewers about values in charts and tooltips.\n\nFor example, you can choose to display large values as exponents and append text to the values. The following column chart displays **Population** grouped by **Country.** You can use custom formatting to display the large values as exponents with the text \"People\" appended to provide additional context to report viewers.\n\nThis page provides an overview of custom value formatting. It includes the following sections:\n\n- [Requirements](#requirements)\n- [Add or edit chart-specific custom value formatting](#add-or-edit-chart-specific-custom-value-formatting)\n- [Things to know about custom value formatting](#things-to-know-about-custom-value-formatting)\n- [Related resources](#related-resources)\n\n| **Important:** Custom formatting is chart-specific, and cannot be applied to field values across an entire report.\n\nRequirements\n------------\n\nIf you want to use custom value formatting for charts, these requirements must be met:\n\n- The [Field Editing in Reports](/looker/docs/studio/edit-fields-in-your-reports) setting must be enabled in the data source.\n- You must have edit rights to a report.\n- A dimension, metric, or calculated field must be a **Numeric** or **Date \\& Time** [data type](/looker/docs/studio/data-types).\n\nAdd or edit chart-specific custom value formatting\n--------------------------------------------------\n\nYou can apply custom value formatting to dimensions, metrics, or calculated fields.\n\n### Add or edit chart-specific custom value formatting for dimensions and metrics\n\nTo add value formatting to dimension or metric values on a chart, follow these steps:\n\n1. Create or [edit your report](/looker/docs/studio/edit-a-report).\n\n2. [Add a new chart](/looker/docs/studio/add-charts-and-controls-to-your-report) or select an existing chart.\n\n3. In the **Setup** tab of the **Properties** panel, click a field's data type icon to open the field's edit menu.\n\n4. Choose a value format option in the **Display Format** drop-down menu. If you'd like to specify a custom format, choose **Custom value format** to open the **Custom number format** menu.\n\n5. Enter a custom value format using [Google Sheets style notation](https://support.google.com/docs/answer/56470) in the **Custom number format** text field, or select a value format option.\n\n | **Important:** Looker Studio does not support conditional expressions in custom value formatting.\n\n A preview of the value format will be displayed under the **Custom number format** text field.\n6. Once you have selected or entered the desired format, click **Apply**.\n\n7. Click outside of the field's edit menu and return to the chart **Setup** properties.\n\nRepeat steps 3-7 to edit a field's custom value formatting.\n\n### Add or edit chart-specific custom value formatting for calculated fields\n\nTo add custom value formatting to calculated field values on a chart, follow these steps:\n\n1. Create or [edit your report](/looker/docs/studio/edit-a-report).\n\n2. [Add a new chart](/looker/docs/studio/add-charts-and-controls-to-your-report) or select an existing chart.\n\n3. In the **Setup** tab of the **Properties** panel, [create a calculated field](/looker/docs/studio/add-edit-and-troubleshoot-calculated-fields). Alternatively, edit an existing calculated field by hovering over the calculated field name and clicking field's data type icon.\n\n If you create a new dimension type calculated field, click **Apply** after you enter the desired expression. The calculated field editor will not detect the field type until you click **Apply,**\n4. Choose a value format option in the **Display Format** drop-down menu. If you'd like to specify a custom format, choose **Custom value format** to open the **Custom number format** menu.\n\n5. Enter a custom value format using [Google Sheets style notation](https://support.google.com/docs/answer/56470) in the **Custom number format** text field, or select a value format option.\n\n A preview of the value format will display under the **Custom number format** text field.\n6. Once you have selected or entered the desired format, click **Apply**.\n\n7. Click outside of the calculated field's edit menu and return to the chart **Setup** properties.\n\nRepeat steps 3-7 to edit a calculated field's custom value formatting.\n\nThings to know about custom value formatting\n--------------------------------------------\n\n- Custom formatting that is applied to chart values will be disabled when the **Compact numbers** setting is enabled. The **Compact numbers** setting is available when the **Show data labels** option is enabled on the **Style** tab of a chart's **Properties** panel.\n\n Similarly, the **Compact numbers** setting will be disabled if custom formatting is applied to chart values.\n- Chart-specific value formatting will only exist in the chart in which it is applied. You can't directly reuse chart-specific value formatting.\n\n However, you can copy a chart that uses custom value formatting. The copy will contain any custom value formatting defined in the original.\n- Looker Studio does not support conditional expressions in custom value formatting.\n\nRelated resources\n-----------------\n\n- [Data types](/looker/docs/studio/data-types)\n- [Edit fields](/looker/docs/studio/edit-fields-in-your-reports)\n- [About calculated fields](/looker/docs/studio/about-calculated-fields)\n- [Add, edit, and troubleshoot calculated fields](/looker/docs/studio/add-edit-and-troubleshoot-calculated-fields)"]]