diff --git a/lib/timing.cpp b/lib/timing.cpp
index f2e02c1c..78ff8824 100644
--- a/lib/timing.cpp
+++ b/lib/timing.cpp
@@ -81,6 +81,12 @@ long long int Util::bootSecs() {
   return t.tv_sec;
 }
 
+uint64_t Util::bootMS() {
+  struct timespec t;
+  clock_gettime(CLOCK_MONOTONIC, &t);
+  return ((uint64_t)t.tv_sec) * 1000 + t.tv_nsec / 1000000;
+}
+
 /// Gets the current time in microseconds.
 long long unsigned int Util::getMicros() {
   struct timespec t;
diff --git a/lib/timing.h b/lib/timing.h
index e7486806..e1d8ebab 100644
--- a/lib/timing.h
+++ b/lib/timing.h
@@ -9,6 +9,7 @@ namespace Util {
   void sleep(int ms); ///< Sleeps for roughly the indicated amount of milliseconds.
   long long int getMS(); ///< Gets the current time in milliseconds.
   long long int bootSecs(); ///< Gets the current system uptime in seconds.
+  uint64_t bootMS(); ///< Gets the current system uptime in milliseconds.
   long long unsigned int getMicros();///<Gets the current time in microseconds.
   long long unsigned int getMicros(long long unsigned int previous);///<Gets the time difference in microseconds.
   long long int getNTP();