[Home](./index.md) > [bitburner](./bitburner.md) > [HackingFormulas](./bitburner.hackingformulas.md) > [hackChance](./bitburner.hackingformulas.hackchance.md) ## HackingFormulas.hackChance() method Calculate hack chance. (Ex: 0.25 would indicate a 25% chance of success.) Signature: ```typescript hackChance(server: Server, player: Person): number; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | server | [Server](./bitburner.server.md) | Server info from [getServer](./bitburner.ns.getserver.md) | | player | [Person](./bitburner.person.md) | Player info from [getPlayer](./bitburner.ns.getplayer.md) | Returns: number The calculated hack chance.