diff --git a/libc/src/__support/time/CMakeLists.txt b/libc/src/__support/time/CMakeLists.txt
index 3851037e4161f..dcb5d40ae7fb2 100644
--- a/libc/src/__support/time/CMakeLists.txt
+++ b/libc/src/__support/time/CMakeLists.txt
@@ -20,6 +20,15 @@ add_object_library(
     libc.src.__support.time.${LIBC_TARGET_OS}.clock_gettime
 )
 
+add_header_library(
+  clock_conversion
+  HDRS
+    clock_conversion.h
+  DEPENDS
+    .clock_gettime
+    libc.src.__support.time.units
+)
+
 if(TARGET libc.src.__support.time.${LIBC_TARGET_OS}.clock_settime)  
   add_object_library(
     clock_settime
diff --git a/libc/src/__support/time/clock_conversion.h b/libc/src/__support/time/clock_conversion.h
new file mode 100644
index 0000000000000..5e3f76f9ba864
--- /dev/null
+++ b/libc/src/__support/time/clock_conversion.h
@@ -0,0 +1,65 @@
+//===--- clock conversion implementation ------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC___SUPPORT_TIME_CLOCK_CONVERSION_H
+#define LLVM_LIBC_SRC___SUPPORT_TIME_CLOCK_CONVERSION_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/time/clock_gettime.h"
+#include "src/__support/time/units.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace internal {
+
+/**
+ * @brief Convert a timespec value from one clock domain to another.
+ *
+ * The function takes a timestamp that is expressed in terms of the clock
+ * identified by param from and returns an equivalent timestamp expressed
+ * in terms of the clock identified by param to.
+ *
+ * Internally it obtains the current time of both clocks with
+ * clock_gettime, then subtracts the source clock’s value and
+ * adds the target clock’s value. The result is normalised so that
+ * the nanoseconds field is always in the range [0, 1 s).
+ *
+ * This is useful, for example, for converting a value obtained from
+ * CLOCK_MONOTONIC to CLOCK_REALTIME (or vice‑versa) so that the
+ * timestamp can be displayed to a user or stored in a format that
+ * is independent of the original clock domain.
+ *
+ * @param input The timestamp to convert
+ * @param from Clock ID of the original timestamp (e.g. CLOCK_MONOTONIC).
+ * @param to Clock ID of the desired timestamp (e.g. CLOCK_REALTIME).
+ * @return The converted timespec
+ */
+LIBC_INLINE timespec convert_clock(timespec input, clockid_t from,
+                                   clockid_t to) {
+  using namespace time_units;
+  timespec from_time;
+  timespec to_time;
+  timespec output;
+  internal::clock_gettime(from, &from_time);
+  internal::clock_gettime(to, &to_time);
+  output.tv_sec = input.tv_sec - from_time.tv_sec + to_time.tv_sec;
+  output.tv_nsec = input.tv_nsec - from_time.tv_nsec + to_time.tv_nsec;
+
+  if (output.tv_nsec > 1_s_ns) {
+    output.tv_sec++;
+    output.tv_nsec -= 1_s_ns;
+  } else if (output.tv_nsec < 0) {
+    output.tv_sec--;
+    output.tv_nsec += 1_s_ns;
+  }
+  return output;
+}
+
+} // namespace internal
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC___SUPPORT_TIME_CLOCK_CONVERSION_H
diff --git a/libc/src/__support/time/linux/CMakeLists.txt b/libc/src/__support/time/linux/CMakeLists.txt
index 478529502b403..7762beb29495e 100644
--- a/libc/src/__support/time/linux/CMakeLists.txt
+++ b/libc/src/__support/time/linux/CMakeLists.txt
@@ -29,14 +29,6 @@ add_object_library(
     libc.src.__support.OSUtil.osutil
 )
 
-add_header_library(
-  clock_conversion
-  HDRS
-    clock_conversion.h
-  DEPENDS
-    .clock_gettime
-    libc.src.__support.time.units
-)
 
 add_header_library(
   abs_timeout
@@ -53,7 +45,7 @@ add_header_library(
   HDRS
     monotonicity.h
   DEPENDS
-    .clock_conversion
+    libc.src.__support.time.clock_conversion
     .abs_timeout
     libc.hdr.time_macros
 )
diff --git a/libc/src/__support/time/linux/clock_conversion.h b/libc/src/__support/time/linux/clock_conversion.h
deleted file mode 100644
index ac5357d308d7c..0000000000000
--- a/libc/src/__support/time/linux/clock_conversion.h
+++ /dev/null
@@ -1,43 +0,0 @@
-//===--- clock conversion linux implementation ------------------*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIBC_SRC___SUPPORT_TIME_LINUX_CLOCK_CONVERSION_H
-#define LLVM_LIBC_SRC___SUPPORT_TIME_LINUX_CLOCK_CONVERSION_H
-
-#include "src/__support/macros/config.h"
-#include "src/__support/time/clock_gettime.h"
-#include "src/__support/time/units.h"
-
-namespace LIBC_NAMESPACE_DECL {
-namespace internal {
-
-LIBC_INLINE timespec convert_clock(timespec input, clockid_t from,
-                                   clockid_t to) {
-  using namespace time_units;
-  timespec from_time;
-  timespec to_time;
-  timespec output;
-  internal::clock_gettime(from, &from_time);
-  internal::clock_gettime(to, &to_time);
-  output.tv_sec = input.tv_sec - from_time.tv_sec + to_time.tv_sec;
-  output.tv_nsec = input.tv_nsec - from_time.tv_nsec + to_time.tv_nsec;
-
-  if (output.tv_nsec > 1_s_ns) {
-    output.tv_sec++;
-    output.tv_nsec -= 1_s_ns;
-  } else if (output.tv_nsec < 0) {
-    output.tv_sec--;
-    output.tv_nsec += 1_s_ns;
-  }
-  return output;
-}
-
-} // namespace internal
-} // namespace LIBC_NAMESPACE_DECL
-
-#endif // LLVM_LIBC_SRC___SUPPORT_TIME_LINUX_CLOCK_CONVERSION_H
diff --git a/libc/src/__support/time/linux/monotonicity.h b/libc/src/__support/time/linux/monotonicity.h
index c7234db2e64c4..2ee260ee44ba9 100644
--- a/libc/src/__support/time/linux/monotonicity.h
+++ b/libc/src/__support/time/linux/monotonicity.h
@@ -12,8 +12,8 @@
 #include "hdr/time_macros.h"
 #include "src/__support/libc_assert.h"
 #include "src/__support/macros/config.h"
+#include "src/__support/time/clock_conversion.h"
 #include "src/__support/time/linux/abs_timeout.h"
-#include "src/__support/time/linux/clock_conversion.h"
 namespace LIBC_NAMESPACE_DECL {
 namespace internal {
 // This function is separated from abs_timeout.