diff --git a/src/xrt/auxiliary/util/u_time.cpp b/src/xrt/auxiliary/util/u_time.cpp
index acfdd2771..27a4b7d87 100644
--- a/src/xrt/auxiliary/util/u_time.cpp
+++ b/src/xrt/auxiliary/util/u_time.cpp
@@ -115,3 +115,27 @@ time_state_ts_to_monotonic_ns(struct time_state const *state, timepoint_ns times
 
 	return timestamp + state->offset;
 }
+
+#ifdef XRT_OS_WINDOWS
+extern "C" void
+time_state_to_win32perfcounter(struct time_state const *state, timepoint_ns timestamp, LARGE_INTEGER *out_qpc_ticks)
+{
+	assert(state != NULL);
+	assert(out_qpc_ticks != NULL);
+
+	uint64_t ns = time_state_ts_to_monotonic_ns(state, timestamp);
+
+	out_qpc_ticks->QuadPart = ns / os_ns_per_qpc_tick_get();
+}
+
+extern "C" timepoint_ns
+time_state_from_win32perfcounter(struct time_state const *state, const LARGE_INTEGER *qpc_ticks)
+{
+	assert(state != NULL);
+	assert(qpc_ticks != NULL);
+
+	uint64_t ns = qpc_ticks->QuadPart * os_ns_per_qpc_tick_get();
+
+	return time_state_monotonic_to_ts_ns(state, ns);
+}
+#endif // XRT_OS_WINDOWS
diff --git a/src/xrt/auxiliary/util/u_time.h b/src/xrt/auxiliary/util/u_time.h
index f2a082cd3..b6007756c 100644
--- a/src/xrt/auxiliary/util/u_time.h
+++ b/src/xrt/auxiliary/util/u_time.h
@@ -17,9 +17,12 @@
 
 #pragma once
 
+#include "xrt/xrt_compiler.h"
+
 #include <stdint.h>
 #include <time.h>
 
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -285,6 +288,30 @@ time_state_monotonic_to_ts_ns(struct time_state const *state, uint64_t monotonic
 uint64_t
 time_state_ts_to_monotonic_ns(struct time_state const *state, timepoint_ns timestamp);
 
+#if defined(XRT_OS_WINDOWS) || defined(XRT_DOXYGEN)
+/*!
+ * Converts a timestamp to Win32 "QPC" ticks.
+ *
+ * Should not be called simultaneously with time_state_get_now_and_update.
+ *
+ * @public @memberof time_state
+ * @ingroup aux_util
+ */
+void
+time_state_to_win32perfcounter(struct time_state const *state, timepoint_ns timestamp, LARGE_INTEGER *out_qpc_ticks);
+
+/*!
+ * Converts from Win32 "QPC" ticks to timestamp.
+ *
+ * Should not be called simultaneously with time_state_get_now_and_update.
+ *
+ * @public @memberof time_state
+ * @ingroup aux_util
+ */
+timepoint_ns
+time_state_from_win32perfcounter(struct time_state const *state, const LARGE_INTEGER *qpc_ticks);
+#endif // defined(XRT_OS_WINDOWS) || defined(XRT_DOXYGEN)
+
 
 #ifdef __cplusplus
 }