diff --git a/api/stats/rtcstats_objects.h b/api/stats/rtcstats_objects.h
index f328326745..46bc018372 100644
--- a/api/stats/rtcstats_objects.h
+++ b/api/stats/rtcstats_objects.h
@@ -556,6 +556,8 @@ class RTC_EXPORT RTCRemoteInboundRtpStreamStats final : public RTCStats {
   RTCStatsMember<std::string> local_id;
   RTCStatsMember<double> round_trip_time;
   RTCStatsMember<double> fraction_lost;
+  RTCStatsMember<double> total_round_trip_time;
+  RTCStatsMember<int32_t> round_trip_time_measurements;
 };
 
 // https://w3c.github.io/webrtc-stats/#dom-rtcmediasourcestats
diff --git a/pc/rtc_stats_collector.cc b/pc/rtc_stats_collector.cc
index aa3b17bb7f..6cb1dcc7a9 100644
--- a/pc/rtc_stats_collector.cc
+++ b/pc/rtc_stats_collector.cc
@@ -546,6 +546,11 @@ ProduceRemoteInboundRtpStreamStatsFromReportBlockData(
   remote_inbound->round_trip_time =
       static_cast<double>(report_block_data.last_rtt_ms()) /
       rtc::kNumMillisecsPerSec;
+  remote_inbound->total_round_trip_time =
+      static_cast<double>(report_block_data.sum_rtt_ms()) /
+      rtc::kNumMillisecsPerSec;
+  remote_inbound->round_trip_time_measurements =
+      report_block_data.num_rtts();
 
   std::string local_id = RTCOutboundRTPStreamStatsIDFromSSRC(
       media_type == cricket::MEDIA_TYPE_AUDIO, report_block.source_ssrc);
diff --git a/pc/rtc_stats_collector_unittest.cc b/pc/rtc_stats_collector_unittest.cc
index 13c8f980ee..aa8bff0a54 100644
--- a/pc/rtc_stats_collector_unittest.cc
+++ b/pc/rtc_stats_collector_unittest.cc
@@ -2676,9 +2676,11 @@ class RTCStatsCollectorTestWithParamKind
 TEST_P(RTCStatsCollectorTestWithParamKind,
        RTCRemoteInboundRtpStreamStatsCollectedFromReportBlock) {
   const int64_t kReportBlockTimestampUtcUs = 123456789;
-  const int64_t kRoundTripTimeMs = 13000;
-  const double kRoundTripTimeSeconds = 13.0;
   const uint8_t kFractionLost = 12;
+  const int64_t kRoundTripTimeSample1Ms = 1234;
+  const double kRoundTripTimeSample1Seconds = 1.234;
+  const int64_t kRoundTripTimeSample2Ms = 13000;
+  const double kRoundTripTimeSample2Seconds = 13;
 
   // The report block's timestamp cannot be from the future, set the fake clock
   // to match.
@@ -2694,10 +2696,10 @@ TEST_P(RTCStatsCollectorTestWithParamKind,
     report_block.fraction_lost = kFractionLost;
     ReportBlockData report_block_data;
     report_block_data.SetReportBlock(report_block, kReportBlockTimestampUtcUs);
-    report_block_data.AddRoundTripTimeSample(1234);
+    report_block_data.AddRoundTripTimeSample(kRoundTripTimeSample1Ms);
     // Only the last sample should be exposed as the
     // |RTCRemoteInboundRtpStreamStats::round_trip_time|.
-    report_block_data.AddRoundTripTimeSample(kRoundTripTimeMs);
+    report_block_data.AddRoundTripTimeSample(kRoundTripTimeSample2Ms);
     report_block_datas.push_back(report_block_data);
   }
   AddSenderInfoAndMediaChannel("TransportName", report_block_datas,
@@ -2719,7 +2721,10 @@ TEST_P(RTCStatsCollectorTestWithParamKind,
     expected_remote_inbound_rtp.packets_lost = 7;
     expected_remote_inbound_rtp.local_id =
         "RTCOutboundRTP" + MediaTypeUpperCase() + stream_id;
-    expected_remote_inbound_rtp.round_trip_time = kRoundTripTimeSeconds;
+    expected_remote_inbound_rtp.round_trip_time = kRoundTripTimeSample2Seconds;
+    expected_remote_inbound_rtp.total_round_trip_time =
+        kRoundTripTimeSample1Seconds + kRoundTripTimeSample2Seconds;
+    expected_remote_inbound_rtp.round_trip_time_measurements = 2;
     // This test does not set up RTCCodecStats, so |codec_id| and |jitter| are
     // expected to be missing. These are tested separately.
 
diff --git a/pc/rtc_stats_integrationtest.cc b/pc/rtc_stats_integrationtest.cc
index 82f07cf4c6..63426673d8 100644
--- a/pc/rtc_stats_integrationtest.cc
+++ b/pc/rtc_stats_integrationtest.cc
@@ -1022,6 +1022,10 @@ class RTCStatsReportVerifier {
                                      RTCOutboundRTPStreamStats::kType);
     verifier.TestMemberIsNonNegative<double>(
         remote_inbound_stream.round_trip_time);
+    verifier.TestMemberIsNonNegative<double>(
+        remote_inbound_stream.total_round_trip_time);
+    verifier.TestMemberIsNonNegative<int32_t>(
+        remote_inbound_stream.round_trip_time_measurements);
     return verifier.ExpectAllMembersSuccessfullyTested();
   }
 
diff --git a/stats/rtcstats_objects.cc b/stats/rtcstats_objects.cc
index 4e743dae2c..e234705767 100644
--- a/stats/rtcstats_objects.cc
+++ b/stats/rtcstats_objects.cc
@@ -849,7 +849,9 @@ WEBRTC_RTCSTATS_IMPL(
     &jitter,
     &local_id,
     &round_trip_time,
-    &fraction_lost)
+    &fraction_lost,
+    &total_round_trip_time,
+    &round_trip_time_measurements)
 // clang-format on
 
 RTCRemoteInboundRtpStreamStats::RTCRemoteInboundRtpStreamStats(
@@ -869,7 +871,9 @@ RTCRemoteInboundRtpStreamStats::RTCRemoteInboundRtpStreamStats(
       jitter("jitter"),
       local_id("localId"),
       round_trip_time("roundTripTime"),
-      fraction_lost("fractionLost") {}
+      fraction_lost("fractionLost"),
+      total_round_trip_time("totalRoundTripTime"),
+      round_trip_time_measurements("roundTripTimeMeasurements") {}
 
 RTCRemoteInboundRtpStreamStats::RTCRemoteInboundRtpStreamStats(
     const RTCRemoteInboundRtpStreamStats& other)
@@ -882,7 +886,9 @@ RTCRemoteInboundRtpStreamStats::RTCRemoteInboundRtpStreamStats(
       jitter(other.jitter),
       local_id(other.local_id),
       round_trip_time(other.round_trip_time),
-      fraction_lost(other.fraction_lost) {}
+      fraction_lost(other.fraction_lost),
+      total_round_trip_time(other.total_round_trip_time),
+      round_trip_time_measurements(other.round_trip_time_measurements) {}
 
 RTCRemoteInboundRtpStreamStats::~RTCRemoteInboundRtpStreamStats() {}