diff --git a/static/common.js b/static/common.js
index 64c272c..ac8c3c8 100644
--- a/static/common.js
+++ b/static/common.js
@@ -61,15 +61,15 @@
   }
 
   function fmtBytes(n) {
-    if (n == null) return "-";
-    const x = Number(n);
-    if (!isFinite(x)) return "-";
-    for (const unit of ["B", "KiB", "MiB", "GiB", "TiB", "PiB"]) {
-      if (Math.abs(x) < 1024 || unit === "PiB")
-        return unit === "B" ? `${x} B` : `${x.toFixed(1)} ${unit}`;
-      n = x / 1024;
+    let x = Number(n);
+    if (n == null || !isFinite(x)) return "-";
+    const units = ["B", "KB", "MB", "GB", "TB", "PB"];
+    let i = 0;
+    while (Math.abs(x) >= 1000 && i < units.length - 1) {
+      x /= 1000;
+      i++;
     }
-    return `${n.toFixed(1)} PiB`;
+    return i === 0 ? `${Math.round(x)} ${units[i]}` : `${x.toFixed(1)} ${units[i]}`;
   }
 
   function fmtTime(s) {