diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
index 362601b5129..95b0a390e01 100644
--- a/src/qt/guiutil.cpp
+++ b/src/qt/guiutil.cpp
@@ -80,6 +80,8 @@
 void ForceActivation();
 #endif
 
+using namespace std::chrono_literals;
+
 namespace GUIUtil {
 
 QString dateTimeStr(const QDateTime &date)
@@ -728,6 +730,16 @@ QString formatDurationStr(std::chrono::seconds dur)
     return str_list.join(" ");
 }
 
+QString FormatPeerAge(std::chrono::seconds time_connected)
+{
+    const auto time_now{GetTime<std::chrono::seconds>()};
+    const auto age{time_now - time_connected};
+    if (age >= 24h) return QObject::tr("%1 d").arg(age / 24h);
+    if (age >= 1h) return QObject::tr("%1 h").arg(age / 1h);
+    if (age >= 1min) return QObject::tr("%1 m").arg(age / 1min);
+    return QObject::tr("%1 s").arg(age / 1s);
+}
+
 QString formatServicesStr(quint64 mask)
 {
     QStringList strList;
diff --git a/src/qt/guiutil.h b/src/qt/guiutil.h
index 0224b18b4ee..76e5207d816 100644
--- a/src/qt/guiutil.h
+++ b/src/qt/guiutil.h
@@ -223,6 +223,9 @@ namespace GUIUtil
     /** Convert seconds into a QString with days, hours, mins, secs */
     QString formatDurationStr(std::chrono::seconds dur);
 
+    /** Convert peer connection time to a QString denominated in the most relevant unit. */
+    QString FormatPeerAge(std::chrono::seconds time_connected);
+
     /** Format CNodeStats.nServices bitmask into a user-readable string */
     QString formatServicesStr(quint64 mask);
 
diff --git a/src/qt/peertablemodel.cpp b/src/qt/peertablemodel.cpp
index 563bca76e50..41c389d9cc6 100644
--- a/src/qt/peertablemodel.cpp
+++ b/src/qt/peertablemodel.cpp
@@ -71,6 +71,8 @@ QVariant PeerTableModel::data(const QModelIndex& index, int role) const
         switch (column) {
         case NetNodeId:
             return (qint64)rec->nodeStats.nodeid;
+        case Age:
+            return GUIUtil::FormatPeerAge(rec->nodeStats.m_connected);
         case Address:
             return QString::fromStdString(rec->nodeStats.m_addr_name);
         case Direction:
@@ -96,6 +98,7 @@ QVariant PeerTableModel::data(const QModelIndex& index, int role) const
     } else if (role == Qt::TextAlignmentRole) {
         switch (column) {
         case NetNodeId:
+        case Age:
             return QVariant(Qt::AlignRight | Qt::AlignVCenter);
         case Address:
             return {};
diff --git a/src/qt/peertablemodel.h b/src/qt/peertablemodel.h
index 11064cdbfe6..e2515de7754 100644
--- a/src/qt/peertablemodel.h
+++ b/src/qt/peertablemodel.h
@@ -47,6 +47,7 @@ public:
 
     enum ColumnIndex {
         NetNodeId = 0,
+        Age,
         Address,
         Direction,
         ConnectionType,
@@ -82,6 +83,9 @@ private:
         /*: Title of Peers Table column which contains a
             unique number used to identify a connection. */
         tr("Peer"),
+        /*: Title of Peers Table column which indicates the duration (length of time)
+            since the peer connection started. */
+        tr("Age"),
         /*: Title of Peers Table column which contains the
             IP/Onion/I2P address of the connected peer. */
         tr("Address"),
diff --git a/src/qt/peertablesortproxy.cpp b/src/qt/peertablesortproxy.cpp
index 26fedb4127b..d87f10c3658 100644
--- a/src/qt/peertablesortproxy.cpp
+++ b/src/qt/peertablesortproxy.cpp
@@ -24,6 +24,8 @@ bool PeerTableSortProxy::lessThan(const QModelIndex& left_index, const QModelInd
     switch (static_cast<PeerTableModel::ColumnIndex>(left_index.column())) {
     case PeerTableModel::NetNodeId:
         return left_stats.nodeid < right_stats.nodeid;
+    case PeerTableModel::Age:
+        return left_stats.m_connected > right_stats.m_connected;
     case PeerTableModel::Address:
         return left_stats.m_addr_name.compare(right_stats.m_addr_name) < 0;
     case PeerTableModel::Direction:
diff --git a/src/qt/rpcconsole.cpp b/src/qt/rpcconsole.cpp
index dcc4f36aaae..8fee3597586 100644
--- a/src/qt/rpcconsole.cpp
+++ b/src/qt/rpcconsole.cpp
@@ -694,6 +694,7 @@ void RPCConsole::setClientModel(ClientModel *model, int bestblock_height, int64_
             ui->peerWidget->setColumnWidth(PeerTableModel::Subversion, SUBVERSION_COLUMN_WIDTH);
             ui->peerWidget->setColumnWidth(PeerTableModel::Ping, PING_COLUMN_WIDTH);
         }
+        ui->peerWidget->horizontalHeader()->setSectionResizeMode(PeerTableModel::Age, QHeaderView::ResizeToContents);
         ui->peerWidget->horizontalHeader()->setStretchLastSection(true);
         ui->peerWidget->setItemDelegateForColumn(PeerTableModel::NetNodeId, new PeerIdViewDelegate(this));
 
@@ -726,6 +727,7 @@ void RPCConsole::setClientModel(ClientModel *model, int bestblock_height, int64_
             ui->banlistWidget->setColumnWidth(BanTableModel::Address, BANSUBNET_COLUMN_WIDTH);
             ui->banlistWidget->setColumnWidth(BanTableModel::Bantime, BANTIME_COLUMN_WIDTH);
         }
+        ui->banlistWidget->horizontalHeader()->setSectionResizeMode(BanTableModel::Address, QHeaderView::ResizeToContents);
         ui->banlistWidget->horizontalHeader()->setStretchLastSection(true);
 
         // create ban table context menu