<!-- Do not edit this file. It is automatically generated by API Documenter. --> [Home](./index.md) > [bitburner](./bitburner.md) > [Hacknet](./bitburner.hacknet.md) > [hashCost](./bitburner.hacknet.hashcost.md) ## Hacknet.hashCost() method Get the cost of a hash upgrade. **Signature:** ```typescript hashCost(upgName: string, count?: number): number; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | upgName | string | Name of the upgrade of Hacknet Node. | | count | number | _(Optional)_ Number of upgrades to buy at once. Defaults to 1 if not specified. | **Returns:** number Number of hashes required for the specified upgrade. ## Remarks RAM cost: 0 GB This function is only applicable for Hacknet Servers (the upgraded version of a Hacknet Node). Returns the number of hashes required for the specified upgrade. The name of the upgrade must be an exact match. ## Example 1 ```ts // NS1: var upgradeName = "Sell for Corporation Funds"; if (hacknet.numHashes() > hacknet.hashCost(upgradeName)) { hacknet.spendHashes(upgradeName); } ``` ## Example 2 ```ts // NS2: const upgradeName = "Sell for Corporation Funds"; if (ns.hacknet.numHashes() > ns.hacknet.hashCost(upgradeName)) { ns.hacknet.spendHashes(upgradeName); } ```