> ## Documentation Index
> Fetch the complete documentation index at: https://docs.usedatabrain.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Single Value (KPI Card)

> Set up a Single Value card for KPIs, with optional metric expression and comparison.

A Single Value card shows **one number** (e.g., total revenue, count of customers). You can add a metric expression, comparison value, and conditional formatting.

## Data Requirements

* One **measure** (or dimension that returns a single value when aggregated)

## How to Set Up

1. Create a metric with one measure. For a true KPI, use an aggregate (e.g., SUM, COUNT) without a dimension, or with a filter that returns one row.
2. Click the **Charts** icon and choose **Single Value**.
3. Click **Settings** → **Chart types** → **Chart properties**.
4. Under **Required Axis**:
   * **Measure**: The column to display.

## Metric Expression

Use a **metric expression** to compute the displayed value (e.g., percentage, ratio). Configure in metric settings or the Single Value configuration.

## Comparison Value

Enable **Comparison** in **Appearance** to show a previous-period or target comparison (e.g., "vs last month"). Configure the comparison column and format in chart settings.

## Conditional Formatting

In **Appearance**, you can define rules that change color based on value ranges (e.g., green when above target, red when below).