---
title: math.LOG10E
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/variables/math-constants-limits/math-log10e
---

**Type:** FLOAT  
**Access:** read-only, constant

**Available in:** all subroutines

The value of the logarithm to base 10 of
`math.E` (log_10 e).