# Bar gauge
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This documentation topic is designed for Grafana workspaces that support **Grafana version 9.x**.  
For Grafana workspaces that support Grafana version 12.x, see [Working in Grafana version 12](using-grafana-v12.md).  
For Grafana workspaces that support Grafana version 10.x, see [Working in Grafana version 10](using-grafana-v10.md).  
For Grafana workspaces that support Grafana version 8.x, see [Working in Grafana version 8](using-grafana-v8.md).

The bar gauge simplifies your data by reducing every field to a single value. You choose how Grafana calculates the reduction.

This panel can show one or more bar gauges depending on how many series, rows, or columns your query returns.

## Value options
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Use the following options to refine how your visualization displays the value:

**Show** – Choose how Grafana displays your data.

**Calculate** – Show a calculated value based on all rows.
+ **Calculation** – Select a reducer function that Grafana will use to reduce many fields to a single value. For a list of available calculations, refer to Calculation types.
+ **Fields** – Select the fields display in the panel.

**All values** – Show a separate stat for every row. If you select this option, then you can also limit the number of rows to display.
+ **Limit** – The maximum number of rows to display. Default is 5,000.
+ **Fields** – Select the fields display in the panel.

## Bar gauge options
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Adjust how the bar gauge is displayed.

**Orientation** – Choose a stacking direction.
+ **Auto** – Grafana selects what it thinks is the best orientation.
+ **Horizontal** – Bars stretch horizontally, left to right.
+ **Vertical** – Bars stretch vertically, bottom to top.

**Display mode** – Choose a display mode.
+ **Gradient** – Threshold levels define a gradient.
+ **Retro LCD** – The gauge is split into small cells that are lit or unlit.
+ **Basic** – Single color based on the matching threshold.

**Show unfilled area** – Select this if you want to render the unfilled region of the bars as dark gray. Not applicable to Retro LCD display mode.

**Min width**

Limit the minimum width of the bar column in the vertical direction.

Automatically show x-axis scrollbar when there is a large amount of data.

**Min height**

Limit the minimum height of the bar row in the horizontal direction.

Automatically show y-axis scrollbar when there is a large amount of data.