[Home](./index.md) > [ember-asset-size-report](./ember-asset-size-report.md) > [Bundle](./ember-asset-size-report.bundle.md) > [calculateSizes](./ember-asset-size-report.bundle.calculatesizes.md) ## Bundle.calculateSizes() method > This API is provided as a preview for developers and may change based on feedback that we receive. Do not use this API in a production environment. > Determine the sizes of all of the files within the bundle, such that the summation of the bundle's contents add up to the total size of the bundle. Signature: ```typescript calculateSizes(): Promise; ``` Returns: `Promise`