diff --git a/module/string.cppm b/module/string.cppm
index 923f3e4..f2fd147 100644
--- a/module/string.cppm
+++ b/module/string.cppm
@@ -700,3 +700,12 @@ using string = basic_string<std::pmr::polymorphic_allocator<std::byte>>;
 }
 
 }
+
+export template <typename Allocator>
+struct std::formatter<kqm::basic_string<Allocator>, char> : std::formatter<kqm::string_view, char>
+{
+    auto format(const kqm::basic_string<Allocator>& s, auto&& ctx) const
+    {
+        return std::formatter<kqm::string_view, char>::format(s.all(), ctx);
+    }
+};
diff --git a/module/view.cppm b/module/view.cppm
index 45e55de..59a2eeb 100644
--- a/module/view.cppm
+++ b/module/view.cppm
@@ -213,3 +213,12 @@ public:
 };
 
 }
+
+export template <>
+struct std::formatter<kqm::string_view, char> : std::formatter<std::string_view, char>
+{
+    auto format(kqm::string_view s, auto&& ctx) const
+    {
+        return std::formatter<std::string_view, char>::format(s.to_std_string_view(), ctx);
+    }
+};