diff --git a/backend/btrixcloud/crawlconfigs.py b/backend/btrixcloud/crawlconfigs.py
index 49056dee..b6526f66 100644
--- a/backend/btrixcloud/crawlconfigs.py
+++ b/backend/btrixcloud/crawlconfigs.py
@@ -199,6 +199,8 @@ class CrawlConfigOut(CrawlConfig):
 
     firstSeed: Optional[str]
 
+    totalSize: Optional[int] = 0
+
     crawlCount: Optional[int] = 0
     lastCrawlId: Optional[str]
     lastCrawlStartTime: Optional[datetime]
@@ -563,8 +565,19 @@ class CrawlConfigOps:
                     }
                 }
             },
-            # total size
-            # {"$set": {"totalSize": {"$sum": "$$finishedCrawls.$$files.size"}}},
+            {
+                "$set": {
+                    "totalSize": {
+                        "$sum": {
+                            "$map": {
+                                "input": "$sortedCrawls.files",
+                                "as": "crawlFile",
+                                "in": {"$arrayElemAt": ["$$crawlFile.size", 0]},
+                            }
+                        }
+                    }
+                }
+            },
             # unset
             {"$unset": ["lastCrawl"]},
             {"$unset": ["sortedCrawls"]},
@@ -680,6 +693,7 @@ class CrawlConfigOps:
             cid=crawlconfig.id
         )
         crawlconfig.crawlCount = crawl_stats["crawl_count"]
+        crawlconfig.totalSize = crawl_stats["total_size"]
         crawlconfig.lastCrawlId = crawl_stats["last_crawl_id"]
         crawlconfig.lastCrawlStartTime = crawl_stats["last_crawl_started"]
         crawlconfig.lastCrawlTime = crawl_stats["last_crawl_finished"]
diff --git a/backend/btrixcloud/crawls.py b/backend/btrixcloud/crawls.py
index 342cc4da..79bca7d0 100644
--- a/backend/btrixcloud/crawls.py
+++ b/backend/btrixcloud/crawls.py
@@ -384,6 +384,7 @@ class CrawlOps:
         """Get crawl statistics for a crawl_config with id cid."""
         stats = {
             "crawl_count": 0,
+            "total_size": 0,
             "last_crawl_id": None,
             "last_crawl_started": None,
             "last_crawl_finished": None,
@@ -407,6 +408,13 @@ class CrawlOps:
             if user:
                 stats["last_started_by"] = user.name
 
+            total_size = 0
+            for res in results:
+                files = res["files"]
+                for file in files:
+                    total_size += file["size"]
+            stats["total_size"] = total_size
+
         return stats
 
     async def _resolve_crawl_refs(
diff --git a/backend/test/test_crawlconfigs.py b/backend/test/test_crawlconfigs.py
index 2945e432..fe86c891 100644
--- a/backend/test/test_crawlconfigs.py
+++ b/backend/test/test_crawlconfigs.py
@@ -205,3 +205,32 @@ def test_verify_revs_history(crawler_auth_headers, default_org_id):
     assert len(items) == 2
     sorted_data = sorted(items, key=lambda revision: revision["rev"])
     assert sorted_data[0]["config"]["scopeType"] == "prefix"
+
+
+def test_workflow_total_size(crawler_auth_headers, default_org_id, admin_crawl_id, crawler_crawl_id):
+    admin_crawl_cid = ""
+
+    r = requests.get(
+        f"{API_PREFIX}/orgs/{default_org_id}/crawlconfigs",
+        headers=crawler_auth_headers,
+    )
+    assert r.status_code == 200
+    data = r.json()
+    assert data["total"] > 0
+    items = data["items"]
+    for workflow in items:
+        last_crawl_id = workflow.get("lastCrawlId")
+        if last_crawl_id and last_crawl_id in (admin_crawl_id, crawler_crawl_id):
+            assert workflow["totalSize"] > 0
+            if last_crawl_id == admin_crawl_id:
+                admin_crawl_cid = workflow["id"]
+        else:
+            assert workflow["totalSize"] == 0
+
+    r = requests.get(
+        f"{API_PREFIX}/orgs/{default_org_id}/crawlconfigs/{admin_crawl_cid}",
+        headers=crawler_auth_headers,
+    )
+    assert r.status_code == 200
+    data = r.json()
+    assert data["totalSize"] > 0