diff --git a/include/cglm-mat3.h b/include/cglm-mat3.h
index b8ff319..da27989 100644
--- a/include/cglm-mat3.h
+++ b/include/cglm-mat3.h
@@ -152,4 +152,37 @@ glm_mat3_scale(mat3 m, float s) {
   m[2][0] *= s; m[2][1] *= s; m[2][2] *= s;
 }
 
+/*!
+ * @brief inverse mat3 and store in dest
+ *
+ * @param[in]  mat  matrix
+ * @param[out] dest inverse matrix
+ */
+CGLM_INLINE
+void
+glm_mat3_inv(mat3 mat, mat3 dest) {
+  float det;
+  float a, b, c,
+        d, e, f,
+        g, h, i;
+
+  a = mat[0][0], b = mat[0][1], c = mat[0][2],
+  d = mat[1][0], e = mat[1][1], f = mat[1][2],
+  g = mat[2][0], h = mat[2][1], i = mat[2][2];
+
+  dest[0][0] =   e * i - f * h;
+  dest[0][1] = -(b * i - h * c);
+  dest[0][2] =   b * f - e * c;
+  dest[1][0] = -(d * i - g * f);
+  dest[1][1] =   a * i - c * g;
+  dest[1][2] = -(a * f - d * c);
+  dest[2][0] =   d * h - g * e;
+  dest[2][1] = -(a * h - g * b);
+  dest[2][2] =   a * e - b * d;
+
+  det = 1.0f / (a * dest[0][0] + b * dest[1][0] + c * dest[2][0]);
+
+  glm_mat3_scale(dest, det);
+}
+
 #endif /* cglm_mat3_h */