# Capacity
The *Capacity* page displays your Project’s *capacity* — the number of migrations that have been allocated to your Project — and related statistics. Each migration costs one unit of capacity. You can also purchase more capacity for the Project account on this page.
The key parts of the *Capacity* page are described in detail below.
### Billing Portal
The **Billing Portal** button takes you to the Warp Billing Portal, where you can do the following:
* View and manage your payment methods.
* View and manage your billing contact information.
* View your invoice history.
### Statistics
The *Statistics* section provides the following quantitative information about your Project:
* **Capacity Total:** The total amount of capacity purchased for the Project. For every migration, one unit of capacity must be spent.
* **Capacity Used:** The total number of capacity units used by the Project. Each unit represents one successful migration.
* **Capacity Available:** The amount of capacity remaining for the Project. You can perform one migration for each one of these units. \
\&#xNAN;*(The formula is: Capacity Available = Capacity Total - Capacity Used)*
* **Repositories Ignored:** The total number of repositories that you have intentionally ignored (excluded from migration) in the Project.
* **Repositories to Migrate:** The number of repositories that still need to be migrated.\
\&#xNAN;*(The formula is: Repositories to Migrate = Discovered Repositories - Migrated Repositories - Ignored Repositories)*
### Buy Capacity
The *Buy Capacity* section lets you purchase additional capacity for the Project. It has the following functions:
* It lists the prices for the various *boxes*, which are “packages” of capacity for purchase.
* It gives you the ability to set the amount of capacity to purchase. You can set this amount in a couple of ways:
* By entering a quantity in the **Quantity** field for the **Small Box**, **Medium Box**, or both rows.
* You can click the **Optimize** button, which automatically enters the optimal quantities for purchasing enough capacity to handle your remaining repositories to migrate. You can clear the effects of the **Optimize** button by clicking the button.
* You can start the purchase process by clicking the **Purchase** button. This will take you to the checkout page, where you will specify the payment method and finalize your purchase.
### Available Box Sizes
Boxes are available in the following sizes:
Size
Capacity
Price
Cost Per Migration
Small Box
100 migrations
$2,000 USD
$20/repository
Medium Box
1,000 migrations
$15,000 USD
$15/repository
**Custom pricing** is available for organizations planning very large migrations. To explore large-scale pricing options, [contact us](https://pack.fm/warp/contact-sales).
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