terraform/website/docs/language/functions/parseint.mdx

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---
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page_title: parseint - Functions - Configuration Language
description: >-
The parseint function parses the given string as a representation of an
integer.
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---
# `parseint` Function
`parseint` parses the given string as a representation of an integer in
the specified base and returns the resulting number. The base must be between 2
and 62 inclusive.
All bases use the arabic numerals 0 through 9 first. Bases between 11 and 36
inclusive use case-insensitive latin letters to represent higher unit values.
Bases 37 and higher use lowercase latin letters and then uppercase latin
letters.
If the given string contains any non-digit characters or digit characters that
are too large for the given base then `parseint` will produce an error.
## Examples
```
> parseint("100", 10)
100
> parseint("FF", 16)
255
> parseint("-10", 16)
-16
> parseint("1011111011101111", 2)
48879
> parseint("aA", 62)
656
> parseint("12", 2)
Error: Invalid function argument
Invalid value for "number" parameter: cannot parse "12" as a base 2 integer.
```
## Related Functions
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* [`format`](/language/functions/format) can format numbers and other values into strings,
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with optional zero padding, alignment, etc.