[android-components](../../index.md) / [mozilla.components.support.ktx.kotlin](../index.md) / [kotlin.ByteArray](index.md) / [toHexString](./to-hex-string.md)

# toHexString

`fun `[`ByteArray`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-byte-array/index.html)`.toHexString(): `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/support/ktx/src/main/java/mozilla/components/support/ktx/kotlin/ByteArray.kt#L63)
`fun `[`ByteArray`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-byte-array/index.html)`.toHexString(hexLength: `[`Int`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`): `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/support/ktx/src/main/java/mozilla/components/support/ktx/kotlin/ByteArray.kt#L68)