diff --git a/src/lib.rs b/src/lib.rs
index dc3f8bb4..365b0fa3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -79,12 +79,24 @@ impl Into<u32> for Id {
     }
 }
 
+impl Into<usize> for Id {
+    fn into(self) -> usize {
+        self.0 as usize
+    }
+}
+
 impl Into<u32> for &Id {
     fn into(self) -> u32 {
         self.0
     }
 }
 
+impl Into<usize> for &Id {
+    fn into(self) -> usize {
+        self.0 as usize
+    }
+}
+
 impl std::fmt::Debug for Id {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         write!(f, "{}", self.0)