> For the complete documentation index, see [llms.txt](https://docs.chartsql.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chartsql.com/charts/gauge.md).

# Gauge

Gauge charts are useful to show simple values as a percentage of a target or maximum

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## Basic Gauge Chart

```sql
-- @chart: gauge
-- @title: Basic Gauge
-- @subtitle: A Basic Gauge Chart
SELECT Conversion_Rate
FROM (
  VALUES (35)
) AS t1 (Conversion_Rate);
```

<figure><img src="/files/yHGxxyfjIYSk9wJ50Hxx" alt=""><figcaption><p>An example of a basic gauge chart</p></figcaption></figure>

| CONVERSION\_RATE |
| ---------------- |
| 35.0             |