---
title: "Counter.add(value, [tags]) | Grafana k6 documentation"
description: "Add a value to the Counter metric."
---

# Counter.add(value, \[tags])

Add a value to the `Counter` metric.

Expand table

| Parameter | Type   | Description                                                                                                                                                                   |
|-----------|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| value     | number | The value to add to the counter.                                                                                                                                              |
| tags      | object | Set of [tags](/docs/k6/latest/using-k6/tags-and-groups/) that will be tagged to the added data point (note that tags are added per data point and not for the entire metric). |

[Counter examples](/docs/k6/latest/javascript-api/k6-metrics/counter/#examples)