diff --git a/src/geointerface.jl b/src/geointerface.jl
index f806fc27..cbdf71a1 100644
--- a/src/geointerface.jl
+++ b/src/geointerface.jl
@@ -160,4 +160,14 @@ end
 function Extents.extent(rect::Rect2)
     (xmin, ymin), (xmax, ymax) = extrema(rect)
     return Extents.Extent(X=(xmin, xmax), Y=(ymin, ymax))
-end
\ No newline at end of file
+end
+
+function Extents.extent(rect::Rect3)
+    (xmin, ymin, zmin), (xmax, ymax, zmax) = extrema(rect)
+    return Extents.Extent(X=(xmin, xmax), Y=(ymin, ymax), Z = (zmin, zmax))
+end
+
+function Extents.extent(rect::Rect4)
+    (xmin, ymin, zmin, mmin), (xmax, ymax, zmax, mmax) = extrema(rect)
+    return Extents.Extent(X=(xmin, xmax), Y=(ymin, ymax), Z = (zmin, zmax), M = (mmin, mmax))
+end