The Datadog UI supports the ability to graph your metrics with various arithmetic options. You can utilize any of: +, -, /, * to modify the values that are displayed on your graphs. This syntax allows for both integer values as well as arithmetic using multiple metrics.

**Metric Arithmetic Using an Integer**

You can modify how a metric value is displayed on a graph by performing an arithmetic operation on the metric. For example, if you would like to visualize the double of a specific metric, say system.load.5

This can be done inside a graph editor by clicking on the Graph Editor and selecting "advanced...". From there you can enter your arithmetic in the "Graph these queries as" box. In this case:` a * 2`

.

**Arithmetic between two Metrics**

For example, if you would like to visualize the percentage of `jvm.heap_memory`

used, you can perform the following arithmetic across two metrics already being reported to Datadog: `jvm.heap_memory / jvm.heap_memory_max`

. This can be done in the same manner as above, utilizing the "advanced..." option in the Graph Editor. From there, you can select "add a metric to this expression. Once you have added all of the metrics you would like to visualize, you will notice they are each assigned a letter, the first metric represented by `a`

, the second `b`

, and so on. Then in the "Graph these queries as" box, you can enter the arithmetic you would like, in this case: `( a / b )`

**Metric Arithmetic via JSON**

In addition to this feature being available in the Graph Editor, you can perform any of this arithmetic in the JSON editor of the graph. An example of doubling the `system.load.5`

metric grouped by each "host" is:

`{`

"requests": [

{

"q": "avg:system.load.5{*} by {host} * 2",

"type": "area",

"conditional_formats": [],

"aggregator": "avg"

}

],

"viz": "timeseries",

"autoscale": true

}

**Experiencing Issues?**If you are performing arithmetic on two or more metrics and see a blank graph, this help article discusses possible reasons - Why does graphing a grouped arithmetical metric query sometimes yield a blank graph?-

If you are experiencing any other issues, or have any questions, please reach out to support@datadoghq.com.

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