diff --git a/index.html b/index.html
index 725a0e3a..c8f1e540 100644
--- a/index.html
+++ b/index.html
@@ -5149,6 +5149,7 @@
               <option value="km">Kilometer (km)</option>
               <option value="lg">League (lg)</option>
               <option value="vr">Versta (vr)</option>
+              <option value="nmi">Nautical mile (nmi)</option>
               <option value="custom_name">Custom name</option>
             </select>
           </div>
diff --git a/modules/ui/world-configurator.js b/modules/ui/world-configurator.js
index c47beaca..6ebb2fb0 100644
--- a/modules/ui/world-configurator.js
+++ b/modules/ui/world-configurator.js
@@ -116,6 +116,7 @@ function editWorld() {
       else if (unit === "mi") return v * 1.60934;
       else if (unit === "lg") return v * 5.556;
       else if (unit === "vr") return v * 1.0668;
+      else if (unit === "nmi") return v * 1.852;
       return 0; // 0 if distanceUnitInput is a custom unit
     }