diff --git a/src/main/java/com/github/stephengold/joltjni/Vec3.java b/src/main/java/com/github/stephengold/joltjni/Vec3.java
index 8e697d69..828e3590 100644
--- a/src/main/java/com/github/stephengold/joltjni/Vec3.java
+++ b/src/main/java/com/github/stephengold/joltjni/Vec3.java
@@ -480,6 +480,19 @@ public boolean isNormalized(float tolerance) {
         }
     }
 
+    /**
+     * Return the length. The vector is unaffected.
+     *
+     * @return the length
+     */
+    @Override
+    public float length() {
+        float length = lengthSq();
+        float result = (float) Math.sqrt(length);
+
+        return result;
+    }
+
     /**
      * Return the squared length. The vector is unaffected.
      *
diff --git a/src/main/java/com/github/stephengold/joltjni/readonly/Vec3Arg.java b/src/main/java/com/github/stephengold/joltjni/readonly/Vec3Arg.java
index 4499e1e9..ae007a41 100644
--- a/src/main/java/com/github/stephengold/joltjni/readonly/Vec3Arg.java
+++ b/src/main/java/com/github/stephengold/joltjni/readonly/Vec3Arg.java
@@ -83,6 +83,13 @@ public interface Vec3Arg {
      */
     boolean isNormalized(float tolerance);
 
+    /**
+     * Return the length. The vector is unaffected.
+     *
+     * @return the length
+     */
+    float length();
+
     /**
      * Return the squared length. The vector is unaffected.
      *