Metrics Explorer を使用すると、storage.googleapis.com/storage/object_count（1 日のオブジェクト数）や storage.googleapis.com/storage/v2/total_byte_seconds（1 日のストレージ消費量）など、他のバケット指標を測定することもできます。使用可能な指標の一覧については Google Cloud の指標に関するドキュメント、Metrics Explorer の使用方法の詳細については指標、時系列、リソースをご覧ください。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-08-08 UTC。"],[],[],null,["[Concepts](/storage/docs/bucket-metadata)\n\nThis page shows you how to get the size of your Cloud Storage [buckets](/storage/docs/buckets).\n\nRequired roles\n\nIn order to get the required permissions for getting the size of a\nCloud Storage bucket, ask your administrator to grant you the Storage\nObject Viewer (`roles/storage.objectViewer`) role on the bucket. If you plan on\nusing the Google Cloud console, ask your administrator to grant you the\nMonitoring Viewer (`roles/monitoring.viewer`) role on the project that contains\nthe bucket instead.\n\nThese roles contain the permissions required to get the size of a bucket.\nTo see the exact permissions that are required, expand the\n**Required permissions** section: \n\nRequired permissions\n\n- `storage.objects.list`\n - This permission is only required for using the Google Cloud CLI to perform the instructions on this page.\n\nTo see the permissions associated with `roles/monitoring.viewer`,\nrefer to the\n[Monitoring Viewer documentation](/iam/docs/understanding-roles#monitoring.editor).\n\nYou might be able to get the required permission with other\n[predefined roles](/iam/docs/understanding-roles) or [custom roles](/iam/docs/creating-custom-roles). For instructions on granting roles\non buckets, see [Use IAM with buckets](/storage/docs/access-control/using-iam-permissions#bucket-iam). For instructions on\ngranting roles on projects, see [Manage access to projects](/iam/docs/granting-changing-revoking-access).\n\nDetermine a bucket's size \n\nConsole**Note:** Monitoring measures bucket size once a day and does not report empty buckets. To measure bucket size at a given moment for any bucket, use `gcloud storage` instead.\n\nTo view the metrics for a monitored resource by using the\nMetrics Explorer, do the following:\n\n1. In the Google Cloud console, go to the\n *leaderboard* **Metrics explorer** page:\n\n [Go to **Metrics explorer**](https://console.cloud.google.com/monitoring/metrics-explorer)\n\n \u003cbr /\u003e\n\n If you use the search bar to find this page, then select the result whose subheading is\n **Monitoring**.\n2. In the toolbar of the Google Cloud console, select your Google Cloud project. For [App Hub](/app-hub/docs/overview) configurations, select the App Hub host project or the app-enabled folder's management project.\n3. In the **Metric** element, expand the **Select a metric** menu, enter `Total bytes (v2)` in the filter bar, and then use the submenus to select a specific resource type and metric:\n 1. In the **Active resources** menu, select **GCS Bucket**.\n 2. In the **Active metric categories** menu, select **Storage**.\n 3. In the **Active metrics** menu, select **Total bytes (v2)**.\n 4. Click **Apply**.\n\n The fully qualified name for this metric is **storage.googleapis.com/storage/v2/total_bytes**.\n4. To add filters, which remove time series from the query results, use the\n [**Filter** element](/monitoring/charts/metrics-selector#filter-option).\n\n5. To combine time series, use the menus on the\n [**Aggregation** element](/monitoring/charts/metrics-selector#select_display).\n For example, to display the CPU utilization for your VMs, based on their zone, set the\n first menu to **Mean** and the second menu to **zone**.\n\n All time series are displayed when the first menu of the **Aggregation** element is set\n to **Unaggregated** . The default settings for the **Aggregation** element\n are determined by the metric type you selected.\n6. For quota and other metrics that report one sample per day, do the following:\n 1. In the **Display** pane, set the **Widget type** to **Stacked bar chart**.\n 2. Set the time period to at least one week.\n\nYou can also use the Metrics Explorer to measure other bucket metrics\nsuch as **storage.googleapis.com/storage/object_count** and\n**storage.googleapis.com/storage/v2/total_byte_seconds** , which measure the\ndaily number of objects and the daily storage consumed, respectively. See\nthe [Google Cloud metrics documentation](/monitoring/api/metrics_gcp_p_z#gcp-storage) for a complete list of\navailable metrics and [Metrics, time series, and resources](/monitoring/api/v3/metrics) for more\ninformation about using the Metrics Explorer.\n\nCommand line**Caution:** The `gcloud storage du` command calculates the current space usage by making a series of object listing requests, which can take a long time for large buckets. If the number of objects in your bucket is hundreds of thousands or more, or if you want to monitor your bucket size over time, use Monitoring instead, as described in the Console tab.\n\nUse the [`gcloud storage du`](/sdk/gcloud/reference/storage/du) command with a `--summarize` flag: \n\n```\ngcloud storage du gs://BUCKET_NAME --summarize\n```\n\nwhere \u003cvar translate=\"no\"\u003eBUCKET_NAME\u003c/var\u003e is the name of the relevant\nbucket.\n\nThe response looks like the following example: \n\n```\n134620 gs://my-bucket\n```\n\nIn this example, the size of the bucket named `my-bucket` is 134,620\nbytes.\n\nWhat's next\n\n- [List the objects in your bucket](/storage/docs/listing-objects).\n- [Get object metadata](/storage/docs/viewing-editing-metadata).\n- [Learn more about monitoring your resources in Monitoring](/monitoring/api/v3/metrics).\n\nTry it for yourself\n\n\nIf you're new to Google Cloud, create an account to evaluate how\nCloud Storage performs in real-world\nscenarios. New customers also get $300 in free credits to run, test, and\ndeploy workloads.\n[Try Cloud Storage free](https://console.cloud.google.com/freetrial)"]]
