diff --git a/apps/i2psnark/java/src/org/klomp/snark/web/I2PSnarkServlet.java b/apps/i2psnark/java/src/org/klomp/snark/web/I2PSnarkServlet.java
index 06a6fa1bb..dc89f18cd 100644
--- a/apps/i2psnark/java/src/org/klomp/snark/web/I2PSnarkServlet.java
+++ b/apps/i2psnark/java/src/org/klomp/snark/web/I2PSnarkServlet.java
@@ -2565,13 +2565,15 @@ public class I2PSnarkServlet extends BasicServlet {
     // rounding makes us look faster :)
     private static String formatSize(long bytes) {
         if (bytes < 5000)
-            return bytes + "&nbsp;B";
+
+            // replace &nbsp; with narrow non-breaking space (&#8239;)
+            return bytes + "&#8239;B";
         else if (bytes < 5*1024*1024)
-            return ((bytes + 512)/1024) + "&nbsp;KB";
+            return ((bytes + 512)/1024) + "&#8239;KB";
         else if (bytes < 10*1024*1024*1024l)
-            return ((bytes + 512*1024)/(1024*1024)) + "&nbsp;MB";
+            return ((bytes + 512*1024)/(1024*1024)) + "&#8239;MB";
         else
-            return ((bytes + 512*1024*1024)/(1024*1024*1024)) + "&nbsp;GB";
+            return ((bytes + 512*1024*1024)/(1024*1024*1024)) + "&#8239;GB";
     }
     
     /**
@@ -2942,7 +2944,7 @@ public class I2PSnarkServlet extends BasicServlet {
             if (uploaded > 0) {
                 double ratio = uploaded / ((double) snark.getTotalLength());
                 buf.append((new DecimalFormat("0.000")).format(ratio));
-                buf.append("&nbsp;x");
+                buf.append("&#8239;x");
             } else {
                 buf.append('0');
             }
diff --git a/core/java/src/net/i2p/data/DataHelper.java b/core/java/src/net/i2p/data/DataHelper.java
index 4652d19bb..f29f4cec0 100644
--- a/core/java/src/net/i2p/data/DataHelper.java
+++ b/core/java/src/net/i2p/data/DataHelper.java
@@ -1560,17 +1560,19 @@ public class DataHelper {
         
         DecimalFormat fmt = new DecimalFormat("##0.00");
 
+        // Replace &nbsp; with thin non-breaking space &#8239; (more consistent/predictable width between fonts & point sizes)
+
         String str = fmt.format(val);
         switch (scale) {
-            case 1: return str + "&nbsp;K";
-            case 2: return str + "&nbsp;M";
-            case 3: return str + "&nbsp;G";
-            case 4: return str + "&nbsp;T";
-            case 5: return str + "&nbsp;P";
-            case 6: return str + "&nbsp;E";
-            case 7: return str + "&nbsp;Z";
-            case 8: return str + "&nbsp;Y";
-            default: return bytes + "&nbsp;";
+            case 1: return str + "&#8239;K";
+            case 2: return str + "&#8239;M";
+            case 3: return str + "&#8239;G";
+            case 4: return str + "&#8239;T";
+            case 5: return str + "&#8239;P";
+            case 6: return str + "&#8239;E";
+            case 7: return str + "&#8239;Z";
+            case 8: return str + "&#8239;Y";
+            default: return bytes + "&#8239;";
         }
     }