diff --git a/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
index 018b6a6dc1a..74dc7d9b32d 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
@@ -11,6 +11,8 @@
 #include <LibWeb/CSS/Parser/Parser.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/Layout/Node.h>
+#include <LibWeb/Painting/PaintableBox.h>
+#include <LibWeb/Painting/SVGGraphicsPaintable.h>
 #include <LibWeb/SVG/AttributeNames.h>
 #include <LibWeb/SVG/AttributeParser.h>
 #include <LibWeb/SVG/SVGClipPathElement.h>
@@ -246,8 +248,19 @@ Optional<float> SVGGraphicsElement::stroke_width() const
 
 JS::NonnullGCPtr<Geometry::DOMRect> SVGGraphicsElement::get_b_box(Optional<SVGBoundingBoxOptions>)
 {
-    dbgln("(STUBBED) SVGGraphicsElement::get_b_box(). Called on: {}", debug_description());
-    return Geometry::DOMRect::create(realm());
+    // FIXME: It should be possible to compute this without layout updates. The bounding box is within the
+    // SVG coordinate space (before any viewbox or other transformations), so it should be possible to
+    // calculate this from SVG geometry without a full layout tree (at least for simple cases).
+    // See: https://svgwg.org/svg2-draft/coords.html#BoundingBoxes
+    const_cast<DOM::Document&>(document()).update_layout();
+    if (!layout_node())
+        return Geometry::DOMRect::create(realm());
+    // Invert the SVG -> screen space transform.
+    auto svg_element_rect = shadow_including_first_ancestor_of_type<SVG::SVGSVGElement>()->paintable_box()->absolute_rect();
+    auto inverse_transform = static_cast<Painting::SVGGraphicsPaintable&>(*paintable_box()).computed_transforms().svg_to_css_pixels_transform().inverse();
+    return Geometry::DOMRect::create(realm(),
+        inverse_transform->map(
+            paintable_box()->absolute_rect().to_type<float>().translated(-svg_element_rect.location().to_type<float>())));
 }
 
 JS::NonnullGCPtr<SVGAnimatedTransformList> SVGGraphicsElement::transform() const