diff --git a/CHANGELOG.md b/CHANGELOG.md
index f50c025a785d13f74419409a4c019ada30fce754..592d1389fbb51cfc7982e0ad6135020e9890afde 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,8 @@ KleidiAI follows the [Semantic Versioning](https://semver.org/) specification fo
   - Remove `-Werror` from default build flags as to not cause integration problems
   - Expose the rhs_packed_stride in the header file
   - Fix validation error when n > nr in kai_matmul_clamp_f32_qai8dxp1vlx8_qsi4cxp4vlx8_1vlx4vl_sme2_mopa
+- Add MSVC support for `kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0` and `kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0` packing kernels.
+  - Add assembler implementation of f32 to f16 typecasting to avoid use of float16_t.
 
 ## v1.2.0
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 19675fbfbad8d94fa9434451b2a07eebd842b6cd..3fd05182b94e78e862a76cb0fc8f2b2931164adf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -88,10 +88,12 @@ set(KLEIDIAI_FILES_SCALAR
     kai/ukernels/matmul/pack/kai_lhs_quant_pack_qai8dxp_f32.c
     kai/ukernels/matmul/pack/kai_lhs_quant_pack_qsi8d32p_f32.c
     kai/ukernels/matmul/pack/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0.c
+    kai/ukernels/matmul/pack/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0_cast_asm.S
     kai/ukernels/matmul/pack/kai_rhs_pack_kxn_qsi4cxp_qs4cxs1s0.c
     kai/ukernels/matmul/pack/kai_rhs_pack_nxk_qsi4cxp_qs4cxs1s0.c
     kai/ukernels/matmul/pack/kai_rhs_pack_nxk_qsi4c32pscalef16_qsu4c32s16s0.c
     kai/ukernels/matmul/pack/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0.c
+    kai/ukernels/matmul/pack/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0_cast_asm.S
 )
 
 set(KLEIDIAI_FILES_NEON_FP16
diff --git a/examples/matmul_clamp_f32_qai8dxp_qsi4c32p/CMakeLists.txt b/examples/matmul_clamp_f32_qai8dxp_qsi4c32p/CMakeLists.txt
index 28bbd67c58e088866cbac5756653cd468be27fc2..bec71b04707bb9b44965c9ee9c69bb1f98352539 100644
--- a/examples/matmul_clamp_f32_qai8dxp_qsi4c32p/CMakeLists.txt
+++ b/examples/matmul_clamp_f32_qai8dxp_qsi4c32p/CMakeLists.txt
@@ -14,6 +14,8 @@ set(KLEIDIAI_PATH ../../)
 set(MATMUL_PACK_PATH ${KLEIDIAI_PATH}/kai/ukernels/matmul/pack/)
 set(MATMUL_PATH ${KLEIDIAI_PATH}/kai/ukernels/matmul/matmul_clamp_f32_qai8dxp_qsi4c32p/)
 
+enable_language(ASM)
+
 # KleidiAI include directories
 include_directories(
     ${KLEIDIAI_PATH}
@@ -25,7 +27,9 @@ add_executable(matmul_clamp_f32_qai8dxp_qsi4c32p
     matmul_clamp_f32_qai8dxp_qsi4c32p.cpp
     ${KLEIDIAI_PATH}/kai/kai_common.h
     ${MATMUL_PACK_PATH}/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0.c
+    ${MATMUL_PACK_PATH}/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0_cast_asm.S
     ${MATMUL_PACK_PATH}/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0.c
+    ${MATMUL_PACK_PATH}/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0_cast_asm.S
     ${MATMUL_PACK_PATH}/kai_lhs_quant_pack_qai8dxp_f32.c
     ${MATMUL_PATH}/kai_matmul_clamp_f32_qai8dxp1x8_qsi4c32p4x8_1x4x32_neon_dotprod.c
     ${MATMUL_PATH}/kai_matmul_clamp_f32_qai8dxp1x8_qsi4c32p4x8_1x4x32_neon_dotprod_asm.S
diff --git a/kai/ukernels/matmul/BUILD.bazel b/kai/ukernels/matmul/BUILD.bazel
index 97f122188e1eedf6051b7924af9043d893ff847b..d3999867633c7ce7d0ca2a5dc8cdd45e3ae2599c 100644
--- a/kai/ukernels/matmul/BUILD.bazel
+++ b/kai/ukernels/matmul/BUILD.bazel
@@ -42,6 +42,8 @@ NEON_KERNELS = [
 
 NEON_KERNELS_ASM = [
     "matmul_clamp_f32_f32_f32p/kai_matmul_clamp_f32_f32_f32p8x1biasf32_6x8x4_neon_mla",
+    "pack/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0_cast",
+    "pack/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0_cast",
 ]
 
 # buildifier: keep sorted
diff --git a/kai/ukernels/matmul/pack/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0.c b/kai/ukernels/matmul/pack/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0.c
index 608de4105e0f6a65343da2a8289147a3af5c96b8..92c34e9a6a4f4b0505faefd2c6598754ee828539 100644
--- a/kai/ukernels/matmul/pack/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0.c
+++ b/kai/ukernels/matmul/pack/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0.c
@@ -11,6 +11,8 @@
 
 #include "kai/kai_common.h"
 
+float kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0_float_from_float16(uint16_t value);
+
 static const size_t kai_num_bytes_sum_rhs = sizeof(float);
 static const size_t kai_num_bytes_bias = sizeof(float);
 static const size_t kai_nr_multiple_of = 4;
@@ -204,7 +206,8 @@ void kai_run_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0(
                         d = ((float*)rhs_packed_scale)[nr_idx];
                         break;
                     case kai_dt_f16:
-                        d = kai_cast_f32_f16(((uint16_t*)rhs_packed_scale)[nr_idx]);
+                        d = kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0_float_from_float16(
+                            ((uint16_t*)rhs_packed_scale)[nr_idx]);
                         break;
                     case kai_dt_bf16:
                         d = kai_cast_f32_bf16(((uint16_t*)rhs_packed_scale)[nr_idx]);
diff --git a/kai/ukernels/matmul/pack/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0_cast_asm.S b/kai/ukernels/matmul/pack/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0_cast_asm.S
new file mode 100644
index 0000000000000000000000000000000000000000..06a10a04355ce647de4a62fcd1295813d2d6355b
--- /dev/null
+++ b/kai/ukernels/matmul/pack/kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0_cast_asm.S
@@ -0,0 +1,36 @@
+//
+// SPDX-FileCopyrightText: Copyright 2024-2025 Arm Limited and/or its affiliates <open-source-office@arm.com>
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+#if defined(_MSC_VER)
+#  define KAI_ASM_CODE(name) AREA name, CODE, READONLY
+#  define KAI_ASM_LABEL(label) label
+#  define KAI_ASM_LABEL_GLOBAL(label) label
+#  define KAI_ASM_GLOBAL(symbol) global symbol
+#  define KAI_ASM_END end
+#elif defined(__APPLE__)
+#  define KAI_ASM_CODE(name) .text
+#  define KAI_ASM_LABEL(label) _##label:
+#  define KAI_ASM_LABEL_GLOBAL(label) _##label:
+#  define KAI_ASM_GLOBAL(symbol) .global _##symbol
+#  define KAI_ASM_END
+#else
+#  define KAI_ASM_CODE(name) .text
+#  define KAI_ASM_LABEL(label) label:
+#  define KAI_ASM_LABEL_GLOBAL(label) label:
+#  define KAI_ASM_GLOBAL(symbol) .global symbol
+#  define KAI_ASM_END
+#endif
+
+    KAI_ASM_CODE(kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0_float16)
+
+    KAI_ASM_GLOBAL(kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0_float_from_float16)
+
+KAI_ASM_LABEL_GLOBAL(kai_rhs_pack_kxn_qsi4c32p_qsu4c32s1s0_float_from_float16)
+    fcvt h0, s0
+    fmov w0, s0
+    ret
+
+    KAI_ASM_END
diff --git a/kai/ukernels/matmul/pack/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0.c b/kai/ukernels/matmul/pack/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0.c
index 5a86b8a0ef3557c5e1ca13ce40bdf35ca20cbe07..ae59f6154885b0f73ef0508d4e909afee84a20d6 100644
--- a/kai/ukernels/matmul/pack/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0.c
+++ b/kai/ukernels/matmul/pack/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0.c
@@ -11,6 +11,8 @@
 
 #include "kai/kai_common.h"
 
+float kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0_float_from_float16(uint16_t value);
+
 static const size_t kai_num_bytes_sum_rhs = sizeof(float);
 static const size_t kai_num_bytes_bias = sizeof(float);
 static const size_t kai_nr_multiple_of = 4;
@@ -197,7 +199,8 @@ void kai_run_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0(
                                 d = ((float*)rhs_packed_scale)[nr_idx];
                                 break;
                             case kai_dt_f16:
-                                d = kai_cast_f32_f16(((uint16_t*)rhs_packed_scale)[nr_idx]);
+                                d = kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0_float_from_float16(
+                                    ((uint16_t*)rhs_packed_scale)[nr_idx]);
                                 break;
                             case kai_dt_bf16:
                                 d = kai_cast_f32_bf16(((uint16_t*)rhs_packed_scale)[nr_idx]);
diff --git a/kai/ukernels/matmul/pack/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0_cast_asm.S b/kai/ukernels/matmul/pack/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0_cast_asm.S
new file mode 100644
index 0000000000000000000000000000000000000000..dd4b68c1008ea92744935c86f521254283d0380c
--- /dev/null
+++ b/kai/ukernels/matmul/pack/kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0_cast_asm.S
@@ -0,0 +1,36 @@
+//
+// SPDX-FileCopyrightText: Copyright 2024-2025 Arm Limited and/or its affiliates <open-source-office@arm.com>
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+#if defined(_MSC_VER)
+#  define KAI_ASM_CODE(name) AREA name, CODE, READONLY
+#  define KAI_ASM_LABEL(label) label
+#  define KAI_ASM_LABEL_GLOBAL(label) label
+#  define KAI_ASM_GLOBAL(symbol) global symbol
+#  define KAI_ASM_END end
+#elif defined(__APPLE__)
+#  define KAI_ASM_CODE(name) .text
+#  define KAI_ASM_LABEL(label) _##label:
+#  define KAI_ASM_LABEL_GLOBAL(label) _##label:
+#  define KAI_ASM_GLOBAL(symbol) .global _##symbol
+#  define KAI_ASM_END
+#else
+#  define KAI_ASM_CODE(name) .text
+#  define KAI_ASM_LABEL(label) label:
+#  define KAI_ASM_LABEL_GLOBAL(label) label:
+#  define KAI_ASM_GLOBAL(symbol) .global symbol
+#  define KAI_ASM_END
+#endif
+
+    KAI_ASM_CODE(kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0_float16)
+
+    KAI_ASM_GLOBAL(kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0_float_from_float16)
+
+KAI_ASM_LABEL_GLOBAL(kai_rhs_pack_nxk_qsi4c32p_qsu4c32s1s0_float_from_float16)
+    fcvt h0, s0
+    fmov w0, s0
+    ret
+
+    KAI_ASM_END