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[Home](./index.md) &gt; [bitburner](./bitburner.md) &gt; [Hacknet](./bitburner.hacknet.md) &gt; [hashCost](./bitburner.hacknet.hashcost.md)

## Hacknet.hashCost() method

Get the cost of a hash upgrade.

<b>Signature:</b>

```typescript
hashCost(upgName: string): number;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  upgName | string | Name of the upgrade of Hacknet Node. |

<b>Returns:</b>

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);
}
```