diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/resource/ClusterCapacity.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/resource/ClusterCapacity.java
index 25e3255..712d575 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/resource/ClusterCapacity.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/resource/ClusterCapacity.java
@@ -25,6 +25,7 @@
 
 import org.apache.hyracks.api.exceptions.ErrorCode;
 import org.apache.hyracks.api.exceptions.HyracksException;
+import org.apache.hyracks.util.StorageUtil;
 
 public class ClusterCapacity implements IClusterCapacity {
 
@@ -118,6 +119,7 @@
 
     @Override
     public String toString() {
-        return "(memory: " + aggregatedMemoryByteSize + " bytes, CPU cores: " + aggregatedCores + ")";
+        return "(memory: " + StorageUtil.toHumanReadableSize(aggregatedMemoryByteSize) + " bytes, CPU cores: "
+                + aggregatedCores + ")";
     }
 }