diff --git a/source/mijin/debug/stacktrace.hpp b/source/mijin/debug/stacktrace.hpp
index 3d750dd..d039337 100644
--- a/source/mijin/debug/stacktrace.hpp
+++ b/source/mijin/debug/stacktrace.hpp
@@ -7,6 +7,9 @@
 #include <cmath>
 #include <iomanip>
 #include <vector>
+#if __has_include(<fmt/format.h>)
+#   include <fmt/format.h>
+#endif
 #include "./symbol_info.hpp"
 #include "../types/result.hpp"
 #include "../util/iterators.hpp"
@@ -82,4 +85,56 @@ TStream& operator<<(TStream& stream, const Stacktrace& stacktrace)
 
 } // namespace mijin
 
+#if __has_include(<fmt/format.h>)
+template<>
+struct fmt::formatter<mijin::Stackframe>
+{
+    constexpr auto parse(format_parse_context& ctx) -> decltype(ctx.begin())
+    {
+        auto it = ctx.begin();
+        auto end = ctx.end();
+
+        if (it != end && *it != '}') throw format_error("invalid format");
+
+        return it;
+    }
+
+    template<typename TContext>
+    auto format(const mijin::Stackframe& stackframe, TContext& ctx) const -> decltype(ctx.out())
+    {
+        auto it = ctx.out();
+        it = fmt::format_to(it, "[{}] {}:{} in {}", stackframe.address, stackframe.filename,
+                            stackframe.lineNumber, mijin::demangleCPPIdentifier(stackframe.function.c_str()));
+        return it;
+    }
+};
+
+template<>
+struct fmt::formatter<mijin::Stacktrace>
+{
+    constexpr auto parse(format_parse_context& ctx) -> decltype(ctx.begin())
+    {
+        auto it = ctx.begin();
+        auto end = ctx.end();
+
+        if (it != end && *it != '}') throw format_error("invalid format");
+
+        return it;
+    }
+
+    template<typename TContext>
+    auto format(const mijin::Stacktrace& stacktrace, TContext& ctx) const -> decltype(ctx.out())
+    {
+        const int numDigits = static_cast<int>(std::ceil(std::log10(stacktrace.getFrames().size())));
+        auto it = ctx.out();
+        it = fmt::format_to(it, "[{} frames]", stacktrace.getFrames().size());
+        for (const auto& [idx, frame] : mijin::enumerate(stacktrace.getFrames()))
+        {
+            it = fmt::format_to(it, "\n  #{:<{}} at {}", idx, numDigits, frame);
+        }
+        return it;
+    }
+};
+#endif // __has_include(<fmt/format.h>)
+
 #endif // !defined(MIJIN_DEBUG_STACKTRACE_HPP_INCLUDED)