diff --git a/app/src/main/java/app/grapheneos/pdfviewer/Utils.java b/app/src/main/java/app/grapheneos/pdfviewer/Utils.java
index 3199b70..d7388a7 100644
--- a/app/src/main/java/app/grapheneos/pdfviewer/Utils.java
+++ b/app/src/main/java/app/grapheneos/pdfviewer/Utils.java
@@ -9,21 +9,6 @@ import java.text.ParseException;
 import java.util.Calendar;
 
 public class Utils {
-    public static String parseFileSize(long fileSize) {
-        final double kb = fileSize / 1000d;
-
-        if (kb == 0d) {
-            return fileSize + " Bytes";
-        }
-
-        final DecimalFormat format = new DecimalFormat("#.##");
-        format.setRoundingMode(RoundingMode.CEILING);
-
-        if (kb < 1000) {
-            return format.format(kb) + " kB (" + fileSize + " Bytes)";
-        }
-        return format.format(kb / 1000) + " MB (" + fileSize + " Bytes)";
-    }
 
     private static int parseIntSafely(String field) throws ParseException  {
         try {
diff --git a/app/src/main/java/app/grapheneos/pdfviewer/loader/DocumentPropertiesLoader.kt b/app/src/main/java/app/grapheneos/pdfviewer/loader/DocumentPropertiesLoader.kt
index 9b70643..25c6d44 100644
--- a/app/src/main/java/app/grapheneos/pdfviewer/loader/DocumentPropertiesLoader.kt
+++ b/app/src/main/java/app/grapheneos/pdfviewer/loader/DocumentPropertiesLoader.kt
@@ -6,10 +6,10 @@ import android.net.Uri
 import android.provider.OpenableColumns
 import android.text.SpannableStringBuilder
 import android.text.Spanned
+import android.text.format.Formatter
 import android.text.style.StyleSpan
 import android.util.Log
 import app.grapheneos.pdfviewer.R
-import app.grapheneos.pdfviewer.Utils
 import org.json.JSONException
 
 class DocumentPropertiesLoader(
@@ -103,7 +103,7 @@ class DocumentPropertiesLoader(
             val indexSize: Int = cursor.getColumnIndex(OpenableColumns.SIZE)
             if (indexSize >= 0) {
                 val fileSize: Long = cursor.getString(indexSize).toLong()
-                collections[DocumentProperty.FileSize] = Utils.parseFileSize(fileSize)
+                collections[DocumentProperty.FileSize] = Formatter.formatShortFileSize(context, fileSize)
             }
         }
         return collections