diff --git a/datatypes/src/main/java/org/hyperledger/besu/datatypes/BlobsWithCommitments.java b/datatypes/src/main/java/org/hyperledger/besu/datatypes/BlobsWithCommitments.java
index 7a4f0f4de6c..d5277cf54ed 100644
--- a/datatypes/src/main/java/org/hyperledger/besu/datatypes/BlobsWithCommitments.java
+++ b/datatypes/src/main/java/org/hyperledger/besu/datatypes/BlobsWithCommitments.java
@@ -89,4 +89,11 @@ public List<KZGProof> getKzgProofs() {
   public List<VersionedHash> getVersionedHashes() {
     return versionedHashes;
   }
+
+  public int getByteCount() {
+    int blobSize = blobs.stream().mapToInt(b -> b.getData().size()).sum();
+    int commitmentSize = kzgCommitments.stream().mapToInt(c -> c.getData().size()).sum();
+    int proofSize = kzgProofs.stream().mapToInt(p -> p.getData().size()).sum();
+    return blobSize + commitmentSize + proofSize;
+  }
 }
diff --git a/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/transactions/PendingTransaction.java b/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/transactions/PendingTransaction.java
index a716b1675e3..231b8ed16b2 100644
--- a/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/transactions/PendingTransaction.java
+++ b/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/transactions/PendingTransaction.java
@@ -16,6 +16,7 @@
 
 import org.hyperledger.besu.datatypes.AccessListEntry;
 import org.hyperledger.besu.datatypes.Address;
+import org.hyperledger.besu.datatypes.BlobsWithCommitments;
 import org.hyperledger.besu.datatypes.Hash;
 import org.hyperledger.besu.datatypes.Wei;
 import org.hyperledger.besu.ethereum.core.Transaction;
@@ -119,8 +120,9 @@ private int computeEIP1559MemorySize() {
   }
 
   private int computeBlobMemorySize() {
-    // ToDo 4844: adapt for blobs
-    return computeEIP1559MemorySize();
+    int blobsSize =
+        transaction.getBlobsWithCommitments().map(BlobsWithCommitments::getByteCount).orElse(0);
+    return computeEIP1559MemorySize() + blobsSize;
   }
 
   private int computePayloadMemorySize() {