diff --git a/src/main/java/net/knarcraft/permissionsigns/container/PermissionSign.java b/src/main/java/net/knarcraft/permissionsigns/container/PermissionSign.java
index 4314b49..62a0e6d 100644
--- a/src/main/java/net/knarcraft/permissionsigns/container/PermissionSign.java
+++ b/src/main/java/net/knarcraft/permissionsigns/container/PermissionSign.java
@@ -7,7 +7,10 @@ import org.bukkit.ChatColor;
 import org.bukkit.Location;
 
 import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 /**
  * This class represents a placed and active permission sign
@@ -20,6 +23,9 @@ public class PermissionSign {
     private final int duration;
     private final double cost;
 
+    private static Map<Double, TranslatableMessage[]> timeUnits;
+    private static List<Double> sortedUnits;
+
     /**
      * Instantiates a new permission sign
      *
@@ -152,30 +158,17 @@ public class PermissionSign {
         if (duration == 0) {
             return Translator.getTranslatedMessage(TranslatableMessage.SIGN_PERMANENT);
         } else {
-            double minute = 60;
-            double hour = minute * 60;
-            double day = hour * 24;
-            if (duration / day >= 1) {
-                double days = round(duration / day);
-                if (days == 1) {
-                    return (int) days + " " + Translator.getTranslatedMessage(TranslatableMessage.UNIT_DAY);
-                } else {
-                    return days + " " + Translator.getTranslatedMessage(TranslatableMessage.UNIT_DAYS);
-                }
-            } else if (duration / hour >= 1) {
-                double hours = round(duration / hour);
-                if (hours == 1) {
-                    return (int) hours + " " + Translator.getTranslatedMessage(TranslatableMessage.UNIT_HOUR);
-                } else {
-                    return hours + " " + Translator.getTranslatedMessage(TranslatableMessage.UNIT_HOURS);
-                }
-            } else {
-                if (duration == 1) {
-                    return duration + " " + Translator.getTranslatedMessage(TranslatableMessage.UNIT_SECOND);
-                } else {
-                    return duration + " " + Translator.getTranslatedMessage(TranslatableMessage.UNIT_SECONDS);
+            if (sortedUnits == null) {
+                initializeUnits();
+            }
+            for (Double unit : sortedUnits) {
+                if (duration / unit >= 1) {
+                    double units = round(duration / unit);
+                    return formatDurationString(units, timeUnits.get(unit)[units == 1 ? 0 : 1],
+                            (units * 10) % 10 == 0);
                 }
             }
+            return formatDurationString(duration, TranslatableMessage.UNIT_SECONDS, false);
         }
     }
 
@@ -203,4 +196,39 @@ public class PermissionSign {
         return Math.round(number * 100.0) / 100.0;
     }
 
+    /**
+     * Formats a duration string
+     *
+     * @param duration            <p>The duration to display</p>
+     * @param translatableMessage <p>The time unit to display</p>
+     * @param castToInt           <p>Whether to cast the duration to an int</p>
+     * @return <p>The formatted duration string</p>
+     */
+    private String formatDurationString(double duration, TranslatableMessage translatableMessage, boolean castToInt) {
+        if (castToInt) {
+            return (int) duration + " " + Translator.getTranslatedMessage(translatableMessage);
+        } else {
+            return duration + " " + Translator.getTranslatedMessage(translatableMessage);
+        }
+    }
+
+    /**
+     * Initializes the mapping of available time units for formatting permission sign duration
+     */
+    private static void initializeUnits() {
+        double minute = 60;
+        double hour = minute * 60;
+        double day = hour * 24;
+
+        timeUnits = new HashMap<>();
+        timeUnits.put(day, new TranslatableMessage[]{TranslatableMessage.UNIT_DAY, TranslatableMessage.UNIT_DAYS});
+        timeUnits.put(hour, new TranslatableMessage[]{TranslatableMessage.UNIT_HOUR, TranslatableMessage.UNIT_HOURS});
+        timeUnits.put(minute, new TranslatableMessage[]{TranslatableMessage.UNIT_MINUTE, TranslatableMessage.UNIT_MINUTES});
+        timeUnits.put(1D, new TranslatableMessage[]{TranslatableMessage.UNIT_SECOND, TranslatableMessage.UNIT_SECONDS});
+
+        sortedUnits = new ArrayList<>(timeUnits.keySet());
+        Collections.sort(sortedUnits);
+        Collections.reverse(sortedUnits);
+    }
+
 }