modeling-app/docs/kcl-std/functions/std-math-log10.md

---
title: "log10"
subtitle: "Function in math"
excerpt: "Compute the base 10 logarithm of the number."
layout: manual
---

Compute the base 10 logarithm of the number.

```kcl
log10(@input: number): number
```



### Arguments

| Name | Type | Description | Required |
|----------|------|-------------|----------|
| `input` | [`number`](/docs/kcl-std/types/std-types-number) | A number | Yes |

### Returns

[`number`](/docs/kcl-std/types/std-types-number) - A number


### Examples

```kcl
exampleSketch = startSketchOn(XZ)
  |> startProfile(at = [0, 0])
  |> line(end = [log10(100), 0])
  |> line(end = [5, 8])
  |> line(end = [-10, 0])
  |> close()

example = extrude(exampleSketch, length = 5)
```

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