diff --git a/l18n b/l18n
index 849bf88..f0417c7 160000
--- a/l18n
+++ b/l18n
@@ -1 +1 @@
-Subproject commit 849bf8870d0025a655b21b811781e9827e25caa4
+Subproject commit f0417c7857c626d0ed7769b037ecd5a8519ed906
diff --git a/src/MDUnitsSet.php b/src/MDUnitsSet.php
index bf6ab5a..a8e861a 100644
--- a/src/MDUnitsSet.php
+++ b/src/MDUnitsSet.php
@@ -16,7 +16,9 @@ final class MDUnitsSet extends MDValueSet {
 
     const UNITS_LENGTH_TO_MILLIMETER = [
         'm'  => 1000,
+        'ft' => 304.8,
         'dm' => 100,
+        'in' => 25.4,
         'cm' => 10,
         'mm' => 1,
     ];