diff --git a/src/dynarmic/frontend/A32/a32_location_descriptor.cpp b/src/dynarmic/frontend/A32/a32_location_descriptor.cpp
index 62a94113..ac3a374e 100644
--- a/src/dynarmic/frontend/A32/a32_location_descriptor.cpp
+++ b/src/dynarmic/frontend/A32/a32_location_descriptor.cpp
@@ -5,20 +5,17 @@
 
 #include "dynarmic/frontend/A32/a32_location_descriptor.h"
 
-#include <ostream>
-
 #include <fmt/format.h>
 
 namespace Dynarmic::A32 {
 
-std::ostream& operator<<(std::ostream& o, const LocationDescriptor& descriptor) {
-    o << fmt::format("{{{:08x},{},{},{:08x}{}}}",
-                     descriptor.PC(),
-                     descriptor.TFlag() ? "T" : "!T",
-                     descriptor.EFlag() ? "E" : "!E",
-                     descriptor.FPSCR().Value(),
-                     descriptor.SingleStepping() ? ",step" : "");
-    return o;
+std::string ToString(const LocationDescriptor& descriptor) {
+    return fmt::format("{{{:08x},{},{},{:08x}{}}}",
+                       descriptor.PC(),
+                       descriptor.TFlag() ? "T" : "!T",
+                       descriptor.EFlag() ? "E" : "!E",
+                       descriptor.FPSCR().Value(),
+                       descriptor.SingleStepping() ? ",step" : "");
 }
 
 }  // namespace Dynarmic::A32
diff --git a/src/dynarmic/frontend/A32/a32_location_descriptor.h b/src/dynarmic/frontend/A32/a32_location_descriptor.h
index 3bdb72c9..c53e75d4 100644
--- a/src/dynarmic/frontend/A32/a32_location_descriptor.h
+++ b/src/dynarmic/frontend/A32/a32_location_descriptor.h
@@ -6,9 +6,10 @@
 #pragma once
 
 #include <functional>
-#include <iosfwd>
+#include <string>
 #include <tuple>
 
+#include <fmt/format.h>
 #include <mcl/stdint.hpp>
 
 #include "dynarmic/frontend/A32/FPSCR.h"
@@ -131,10 +132,9 @@ private:
 /**
  * Provides a string representation of a LocationDescriptor.
  *
- * @param o          Output stream
  * @param descriptor The descriptor to get a string representation of
  */
-std::ostream& operator<<(std::ostream& o, const LocationDescriptor& descriptor);
+std::string ToString(const LocationDescriptor& descriptor);
 
 }  // namespace Dynarmic::A32
 
@@ -152,3 +152,11 @@ struct hash<Dynarmic::A32::LocationDescriptor> {
     }
 };
 }  // namespace std
+
+template<>
+struct fmt::formatter<Dynarmic::A32::LocationDescriptor> : fmt::formatter<std::string> {
+    template<typename FormatContext>
+    auto format(Dynarmic::A32::LocationDescriptor descriptor, FormatContext& ctx) const {
+        return formatter<std::string>::format(Dynarmic::A32::ToString(descriptor), ctx);
+    }
+};
diff --git a/src/dynarmic/frontend/A32/a32_types.cpp b/src/dynarmic/frontend/A32/a32_types.cpp
index c922f57b..a47ce0b7 100644
--- a/src/dynarmic/frontend/A32/a32_types.cpp
+++ b/src/dynarmic/frontend/A32/a32_types.cpp
@@ -57,24 +57,4 @@ std::string RegListToString(RegList reg_list) {
     return ret;
 }
 
-std::ostream& operator<<(std::ostream& o, Reg reg) {
-    o << RegToString(reg);
-    return o;
-}
-
-std::ostream& operator<<(std::ostream& o, ExtReg reg) {
-    o << ExtRegToString(reg);
-    return o;
-}
-
-std::ostream& operator<<(std::ostream& o, CoprocReg reg) {
-    o << CoprocRegToString(reg);
-    return o;
-}
-
-std::ostream& operator<<(std::ostream& o, RegList reg_list) {
-    o << RegListToString(reg_list);
-    return o;
-}
-
 }  // namespace Dynarmic::A32
diff --git a/src/dynarmic/frontend/A32/a32_types.h b/src/dynarmic/frontend/A32/a32_types.h
index 5d1166f3..6f56bea5 100644
--- a/src/dynarmic/frontend/A32/a32_types.h
+++ b/src/dynarmic/frontend/A32/a32_types.h
@@ -5,10 +5,10 @@
 
 #pragma once
 
-#include <iosfwd>
 #include <string>
 #include <utility>
 
+#include <fmt/format.h>
 #include <mcl/assert.hpp>
 #include <mcl/stdint.hpp>
 
@@ -72,11 +72,6 @@ const char* ExtRegToString(ExtReg reg);
 const char* CoprocRegToString(CoprocReg reg);
 std::string RegListToString(RegList reg_list);
 
-std::ostream& operator<<(std::ostream& o, Reg reg);
-std::ostream& operator<<(std::ostream& o, ExtReg reg);
-std::ostream& operator<<(std::ostream& o, CoprocReg reg);
-std::ostream& operator<<(std::ostream& o, RegList reg_list);
-
 constexpr bool IsSingleExtReg(ExtReg reg) {
     return reg >= ExtReg::S0 && reg <= ExtReg::S31;
 }
@@ -148,3 +143,35 @@ inline ExtReg ToVector(bool Q, size_t base, bool bit) {
 }
 
 }  // namespace Dynarmic::A32
+
+template<>
+struct fmt::formatter<Dynarmic::A32::Reg> : fmt::formatter<const char*> {
+    template<typename FormatContext>
+    auto format(Dynarmic::A32::Reg reg, FormatContext& ctx) const {
+        return formatter<const char*>::format(Dynarmic::A32::RegToString(reg), ctx);
+    }
+};
+
+template<>
+struct fmt::formatter<Dynarmic::A32::ExtReg> : fmt::formatter<const char*> {
+    template<typename FormatContext>
+    auto format(Dynarmic::A32::ExtReg reg, FormatContext& ctx) const {
+        return formatter<const char*>::format(Dynarmic::A32::ExtRegToString(reg), ctx);
+    }
+};
+
+template<>
+struct fmt::formatter<Dynarmic::A32::CoprocReg> : fmt::formatter<const char*> {
+    template<typename FormatContext>
+    auto format(Dynarmic::A32::CoprocReg reg, FormatContext& ctx) const {
+        return formatter<const char*>::format(Dynarmic::A32::CoprocRegToString(reg), ctx);
+    }
+};
+
+template<>
+struct fmt::formatter<Dynarmic::A32::RegList> : fmt::formatter<std::string> {
+    template<typename FormatContext>
+    auto format(Dynarmic::A32::RegList reg_list, FormatContext& ctx) const {
+        return formatter<std::string>::format(Dynarmic::A32::RegListToString(reg_list), ctx);
+    }
+};
diff --git a/src/dynarmic/frontend/A64/a64_location_descriptor.cpp b/src/dynarmic/frontend/A64/a64_location_descriptor.cpp
index 81c6cafe..83a931ff 100644
--- a/src/dynarmic/frontend/A64/a64_location_descriptor.cpp
+++ b/src/dynarmic/frontend/A64/a64_location_descriptor.cpp
@@ -5,15 +5,12 @@
 
 #include "dynarmic/frontend/A64/a64_location_descriptor.h"
 
-#include <ostream>
-
 #include <fmt/format.h>
 
 namespace Dynarmic::A64 {
 
-std::ostream& operator<<(std::ostream& o, const LocationDescriptor& descriptor) {
-    o << fmt::format("{{{}, {}{}}}", descriptor.PC(), descriptor.FPCR().Value(), descriptor.SingleStepping() ? ", step" : "");
-    return o;
+std::string ToString(const LocationDescriptor& descriptor) {
+    return fmt::format("{{{}, {}{}}}", descriptor.PC(), descriptor.FPCR().Value(), descriptor.SingleStepping() ? ", step" : "");
 }
 
 }  // namespace Dynarmic::A64
diff --git a/src/dynarmic/frontend/A64/a64_location_descriptor.h b/src/dynarmic/frontend/A64/a64_location_descriptor.h
index 3301616f..122bebbc 100644
--- a/src/dynarmic/frontend/A64/a64_location_descriptor.h
+++ b/src/dynarmic/frontend/A64/a64_location_descriptor.h
@@ -6,9 +6,10 @@
 #pragma once
 
 #include <functional>
-#include <iosfwd>
+#include <string>
 #include <tuple>
 
+#include <fmt/format.h>
 #include <mcl/bit/bit_field.hpp>
 #include <mcl/stdint.hpp>
 
@@ -84,10 +85,9 @@ private:
 /**
  * Provides a string representation of a LocationDescriptor.
  *
- * @param o          Output stream
  * @param descriptor The descriptor to get a string representation of
  */
-std::ostream& operator<<(std::ostream& o, const LocationDescriptor& descriptor);
+std::string ToString(const LocationDescriptor& descriptor);
 
 }  // namespace Dynarmic::A64
 
@@ -105,3 +105,11 @@ struct hash<Dynarmic::A64::LocationDescriptor> {
     }
 };
 }  // namespace std
+
+template<>
+struct fmt::formatter<Dynarmic::A64::LocationDescriptor> : fmt::formatter<std::string> {
+    template<typename FormatContext>
+    auto format(Dynarmic::A64::LocationDescriptor descriptor, FormatContext& ctx) const {
+        return formatter<std::string>::format(Dynarmic::A64::ToString(descriptor), ctx);
+    }
+};
diff --git a/src/dynarmic/frontend/A64/a64_types.cpp b/src/dynarmic/frontend/A64/a64_types.cpp
index 822cf123..ca1c59ab 100644
--- a/src/dynarmic/frontend/A64/a64_types.cpp
+++ b/src/dynarmic/frontend/A64/a64_types.cpp
@@ -30,14 +30,4 @@ std::string VecToString(Vec vec) {
     return fmt::format("v{}", static_cast<size_t>(vec));
 }
 
-std::ostream& operator<<(std::ostream& o, Reg reg) {
-    o << RegToString(reg);
-    return o;
-}
-
-std::ostream& operator<<(std::ostream& o, Vec vec) {
-    o << VecToString(vec);
-    return o;
-}
-
 }  // namespace Dynarmic::A64
diff --git a/src/dynarmic/frontend/A64/a64_types.h b/src/dynarmic/frontend/A64/a64_types.h
index 3bcb84aa..6bc7a245 100644
--- a/src/dynarmic/frontend/A64/a64_types.h
+++ b/src/dynarmic/frontend/A64/a64_types.h
@@ -5,9 +5,9 @@
 
 #pragma once
 
-#include <iosfwd>
 #include <string>
 
+#include <fmt/format.h>
 #include <mcl/assert.hpp>
 #include <mcl/stdint.hpp>
 
@@ -101,9 +101,6 @@ const char* CondToString(Cond cond);
 std::string RegToString(Reg reg);
 std::string VecToString(Vec vec);
 
-std::ostream& operator<<(std::ostream& o, Reg reg);
-std::ostream& operator<<(std::ostream& o, Vec vec);
-
 constexpr size_t RegNumber(Reg reg) {
     return static_cast<size_t>(reg);
 }
@@ -127,3 +124,19 @@ inline Vec operator+(Vec vec, size_t number) {
 }
 
 }  // namespace Dynarmic::A64
+
+template<>
+struct fmt::formatter<Dynarmic::A64::Reg> : fmt::formatter<std::string> {
+    template<typename FormatContext>
+    auto format(Dynarmic::A64::Reg reg, FormatContext& ctx) const {
+        return formatter<std::string>::format(Dynarmic::A64::RegToString(reg), ctx);
+    }
+};
+
+template<>
+struct fmt::formatter<Dynarmic::A64::Vec> : fmt::formatter<std::string> {
+    template<typename FormatContext>
+    auto format(Dynarmic::A64::Vec vec, FormatContext& ctx) const {
+        return formatter<std::string>::format(Dynarmic::A64::VecToString(vec), ctx);
+    }
+};
diff --git a/src/dynarmic/ir/location_descriptor.cpp b/src/dynarmic/ir/location_descriptor.cpp
index 19e67ea2..e7e64056 100644
--- a/src/dynarmic/ir/location_descriptor.cpp
+++ b/src/dynarmic/ir/location_descriptor.cpp
@@ -5,15 +5,12 @@
 
 #include "dynarmic/ir/location_descriptor.h"
 
-#include <ostream>
-
 #include <fmt/format.h>
 
 namespace Dynarmic::IR {
 
-std::ostream& operator<<(std::ostream& o, const LocationDescriptor& descriptor) {
-    o << fmt::format("{{{:016x}}}", descriptor.Value());
-    return o;
+std::string ToString(const LocationDescriptor& descriptor) {
+    return fmt::format("{{{:016x}}}", descriptor.Value());
 }
 
 }  // namespace Dynarmic::IR
diff --git a/src/dynarmic/ir/location_descriptor.h b/src/dynarmic/ir/location_descriptor.h
index 4b5d77d8..48e5e32b 100644
--- a/src/dynarmic/ir/location_descriptor.h
+++ b/src/dynarmic/ir/location_descriptor.h
@@ -6,8 +6,9 @@
 #pragma once
 
 #include <functional>
-#include <iosfwd>
+#include <string>
 
+#include <fmt/format.h>
 #include <mcl/stdint.hpp>
 
 namespace Dynarmic::IR {
@@ -31,7 +32,7 @@ private:
     u64 value;
 };
 
-std::ostream& operator<<(std::ostream& o, const LocationDescriptor& descriptor);
+std::string ToString(const LocationDescriptor& descriptor);
 
 inline bool operator<(const LocationDescriptor& x, const LocationDescriptor& y) noexcept {
     return x.Value() < y.Value();
@@ -53,3 +54,11 @@ struct hash<Dynarmic::IR::LocationDescriptor> {
     }
 };
 }  // namespace std
+
+template<>
+struct fmt::formatter<Dynarmic::IR::LocationDescriptor> : fmt::formatter<std::string> {
+    template<typename FormatContext>
+    auto format(Dynarmic::IR::LocationDescriptor descriptor, FormatContext& ctx) const {
+        return formatter<std::string>::format(ToString(descriptor), ctx);
+    }
+};
diff --git a/src/dynarmic/ir/microinstruction.cpp b/src/dynarmic/ir/microinstruction.cpp
index 3fddb387..cf51363b 100644
--- a/src/dynarmic/ir/microinstruction.cpp
+++ b/src/dynarmic/ir/microinstruction.cpp
@@ -7,7 +7,6 @@
 
 #include <algorithm>
 
-#include <fmt/ostream.h>
 #include <mcl/assert.hpp>
 
 #include "dynarmic/ir/opcodes.h"
diff --git a/src/dynarmic/ir/opcodes.cpp b/src/dynarmic/ir/opcodes.cpp
index 2741e5fb..e80915f9 100644
--- a/src/dynarmic/ir/opcodes.cpp
+++ b/src/dynarmic/ir/opcodes.cpp
@@ -73,8 +73,4 @@ std::string GetNameOf(Opcode op) {
     return OpcodeInfo::opcode_info.at(static_cast<size_t>(op)).name;
 }
 
-std::ostream& operator<<(std::ostream& o, Opcode opcode) {
-    return o << GetNameOf(opcode);
-}
-
 }  // namespace Dynarmic::IR
diff --git a/src/dynarmic/ir/opcodes.h b/src/dynarmic/ir/opcodes.h
index 719fda00..404f4cdb 100644
--- a/src/dynarmic/ir/opcodes.h
+++ b/src/dynarmic/ir/opcodes.h
@@ -5,9 +5,9 @@
 
 #pragma once
 
-#include <iosfwd>
 #include <string>
 
+#include <fmt/format.h>
 #include <mcl/stdint.hpp>
 
 namespace Dynarmic::IR {
@@ -43,6 +43,12 @@ Type GetArgTypeOf(Opcode op, size_t arg_index);
 /// Get the name of an opcode.
 std::string GetNameOf(Opcode op);
 
-std::ostream& operator<<(std::ostream& o, Opcode opcode);
-
 }  // namespace Dynarmic::IR
+
+template<>
+struct fmt::formatter<Dynarmic::IR::Opcode> : fmt::formatter<std::string> {
+    template<typename FormatContext>
+    auto format(Dynarmic::IR::Opcode op, FormatContext& ctx) const {
+        return formatter<std::string>::format(Dynarmic::IR::GetNameOf(op), ctx);
+    }
+};
diff --git a/src/dynarmic/ir/type.cpp b/src/dynarmic/ir/type.cpp
index bf1a35c4..7c0f6bf6 100644
--- a/src/dynarmic/ir/type.cpp
+++ b/src/dynarmic/ir/type.cpp
@@ -43,8 +43,4 @@ bool AreTypesCompatible(Type t1, Type t2) {
     return t1 == t2 || t1 == Type::Opaque || t2 == Type::Opaque;
 }
 
-std::ostream& operator<<(std::ostream& o, Type type) {
-    return o << GetNameOf(type);
-}
-
 }  // namespace Dynarmic::IR
diff --git a/src/dynarmic/ir/type.h b/src/dynarmic/ir/type.h
index 7f99e474..65fe76dd 100644
--- a/src/dynarmic/ir/type.h
+++ b/src/dynarmic/ir/type.h
@@ -5,9 +5,9 @@
 
 #pragma once
 
-#include <iosfwd>
 #include <string>
 
+#include <fmt/format.h>
 #include <mcl/stdint.hpp>
 
 namespace Dynarmic::IR {
@@ -49,6 +49,12 @@ std::string GetNameOf(Type type);
 /// @returns true if t1 and t2 are compatible types
 bool AreTypesCompatible(Type t1, Type t2);
 
-std::ostream& operator<<(std::ostream& o, Type type);
-
 }  // namespace Dynarmic::IR
+
+template<>
+struct fmt::formatter<Dynarmic::IR::Type> : fmt::formatter<std::string> {
+    template<typename FormatContext>
+    auto format(Dynarmic::IR::Type type, FormatContext& ctx) const {
+        return formatter<std::string>::format(Dynarmic::IR::GetNameOf(type), ctx);
+    }
+};