# Convert a field value from Decimal to Hexa
**URL:** https://discuss.elastic.co/t/convert-a-field-value-from-decimal-to-hexa/176054
**Category:** Logstash
**Created:** [April 9, 2019, 3:01pm UTC](https://discuss.elastic.co/t/convert-a-field-value-from-decimal-to-hexa/176054 "2019-04-09T15:01:59Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@WarriorHarb](https://discuss.elastic.co/u/WarriorHarb)
#### Post date: [April 9, 2019, 3:01pm UTC](https://discuss.elastic.co/t/convert-a-field-value-from-decimal-to-hexa/176054/1 "2019-04-09T15:01:59Z")
Hello,
So after applying the GROK filter ,i have a field that it's value is in decimal. **I need to convert it to Hexa**. i tried this :
```
ruby {
code => "event.set('%{AgentID}', event.get('%{AgentID}').to_s.hex)"
}
```
the AgentID is the field containing the decimal value that need to be converted to Hexa.
the value remains in decimal with this code.
Any suggestions ?
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [April 9, 2019, 3:44pm UTC](https://discuss.elastic.co/t/convert-a-field-value-from-decimal-to-hexa/176054/2 "2019-04-09T15:44:08Z")
```
mutate { add_field => { "someField" => 65533 } }
ruby { code => 'event.set("hexField", event.get("someField").to_i.to_s(16))' }
```
gets me
```
"someField" => "65533",
"hexField" => "fffd"
```
---
### Author:  [@WarriorHarb](https://discuss.elastic.co/u/WarriorHarb)
#### Post date: [April 9, 2019, 4:38pm UTC](https://discuss.elastic.co/t/convert-a-field-value-from-decimal-to-hexa/176054/4 "2019-04-09T16:38:22Z")
Thanks @Badger , it worked just fine
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [April 9, 2019, 4:38pm UTC](https://discuss.elastic.co/t/convert-a-field-value-from-decimal-to-hexa/176054/5 "2019-04-09T16:38:23Z")
```
ruby { code => 'event.set("someField", event.get("someField").to_i.to_s(16))' }
```
will also work.
---
### Author:  [@WarriorHarb](https://discuss.elastic.co/u/WarriorHarb)
#### Post date: [April 9, 2019, 4:46pm UTC](https://discuss.elastic.co/t/convert-a-field-value-from-decimal-to-hexa/176054/6 "2019-04-09T16:46:45Z")
sorry @Badger if i might ask,
where did you find the description of these functions like **.to\_i.to\_s** ,
i didn't find it in the documentation. could you give me a link where to find such functions ?
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [April 9, 2019, 4:50pm UTC](https://discuss.elastic.co/t/convert-a-field-value-from-decimal-to-hexa/176054/7 "2019-04-09T16:50:45Z")
It is a ruby filter, so you will find those functions in the [Ruby](https://ruby-doc.org/core-2.3.3/Fixnum.html#method-i-to_s) language documentation, not in the logstash documentation.
---
### Author:  [@WarriorHarb](https://discuss.elastic.co/u/WarriorHarb)
#### Post date: [April 9, 2019, 4:51pm UTC](https://discuss.elastic.co/t/convert-a-field-value-from-decimal-to-hexa/176054/8 "2019-04-09T16:51:32Z")
@Badger again thank you so much
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 7, 2019, 4:51pm UTC](https://discuss.elastic.co/t/convert-a-field-value-from-decimal-to-hexa/176054/9 "2019-05-07T16:51:38Z")
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