Chainmail armor cannot be crafted in Minecraft survival mode
Get chainmail armor from mob drops, villager trades, loot chests, or commands
Use an anvil to combine damaged chainmail pieces with chainmail armor or repair materials if applicable in your version
Equip the chainmail helmet, chestplate, leggings, and boots in the armor slots
In Creative mode, open the inventory and search for chainmail armor
In Java Edition, use commands like `/give @p chainmail_helmet`
In Bedrock Edition, use commands like `/give @p chainmail_helmet`