torrent.go       | 21 +++++++++++++++++++++
 torrent_stats.go |  5 +++++

diff --git a/torrent.go b/torrent.go
index 397c13ac572e78418d3831ab3bb2ac726df612e7..4d36209c5a825440b317a06d16bd335452716b46 100644
--- a/torrent.go
+++ b/torrent.go
@@ -1271,7 +1271,28 @@
 func (t *Torrent) Stats() TorrentStats {
 	t.cl.mu.Lock()
 	defer t.cl.mu.Unlock()
+
+	t.stats.ActivePeers = len(t.conns)
+	t.stats.HalfOpenPeers = len(t.halfOpen)
+	t.stats.PendingPeers = len(t.peers)
+	t.stats.TotalPeers = t.numTotalPeers()
+
 	return t.stats
+}
+
+// The total number of peers in the torrent.
+func (t *Torrent) numTotalPeers() int {
+	peers := make(map[string]struct{})
+	for conn := range t.conns {
+		peers[conn.conn.RemoteAddr().String()] = struct{}{}
+	}
+	for addr := range t.halfOpen {
+		peers[addr] = struct{}{}
+	}
+	for _, peer := range t.peers {
+		peers[fmt.Sprintf("%s:%d", peer.IP, peer.Port)] = struct{}{}
+	}
+	return len(peers)
 }
 
 // Returns true if the connection is added.
diff --git a/torrent_stats.go b/torrent_stats.go
index 3f34434af26a619cd078c63a9a1cb76d5c6cff15..3dd2716a916db24aa5be75eac817922c68d89290 100644
--- a/torrent_stats.go
+++ b/torrent_stats.go
@@ -2,4 +2,9 @@ package torrent
 
 type TorrentStats struct {
 	ConnStats // Aggregates stats over all connections past and present.
+
+	ActivePeers   int
+	HalfOpenPeers int
+	PendingPeers  int
+	TotalPeers    int
 }