diff --git a/src/libs/extensionsystem/pluginmanager.cpp b/src/libs/extensionsystem/pluginmanager.cpp
index a01329e4903..0e4e2309195 100644
--- a/src/libs/extensionsystem/pluginmanager.cpp
+++ b/src/libs/extensionsystem/pluginmanager.cpp
@@ -55,7 +55,7 @@ Q_LOGGING_CATEGORY(pluginLog, "qtc.extensionsystem", QtWarningMsg)
 
 const char C_IGNORED_PLUGINS[] = "Plugins/Ignored";
 const char C_FORCEENABLED_PLUGINS[] = "Plugins/ForceEnabled";
-const int DELAYED_INITIALIZE_INTERVAL = 20; // ms
+const std::chrono::milliseconds DELAYED_INITIALIZE_INTERVAL{20};
 
 enum { debugLeaks = 0 };
 
diff --git a/src/plugins/coreplugin/icore.cpp b/src/plugins/coreplugin/icore.cpp
index 7c950382b96..623c7a6577a 100644
--- a/src/plugins/coreplugin/icore.cpp
+++ b/src/plugins/coreplugin/icore.cpp
@@ -1344,7 +1344,8 @@ void ICorePrivate::init()
 
     if (HostOsInfo::isLinuxHost()) {
         m_trimTimer.setSingleShot(true);
-        m_trimTimer.setInterval(60000);
+        using namespace std::chrono_literals;
+        m_trimTimer.setInterval(60s);
         // glibc may not actually free memory in free().
 #ifdef Q_OS_LINUX
         connect(&m_trimTimer, &QTimer::timeout, this, [] { malloc_trim(0); });
diff --git a/src/plugins/coreplugin/locator/locator.cpp b/src/plugins/coreplugin/locator/locator.cpp
index 0666831355a..fbe023d3095 100644
--- a/src/plugins/coreplugin/locator/locator.cpp
+++ b/src/plugins/coreplugin/locator/locator.cpp
@@ -163,7 +163,7 @@ void Locator::loadSettings()
                                                                 : QString("QuickOpen");
     const Settings def;
     DB::beginGroup(settingsGroup);
-    m_refreshTimer.setInterval(DB::value("RefreshInterval", 60).toInt() * 60000);
+    m_refreshTimer.setInterval(std::chrono::minutes(DB::value("RefreshInterval", 60).toInt()));
     m_settings.useCenteredPopup = DB::value(kUseCenteredPopup, def.useCenteredPopup).toBool();
 
     for (ILocatorFilter *filter : std::as_const(m_filters)) {
@@ -359,7 +359,7 @@ void Locator::setRefreshInterval(int interval)
         m_refreshTimer.setInterval(0);
         return;
     }
-    m_refreshTimer.setInterval(interval * 60000);
+    m_refreshTimer.setInterval(std::chrono::minutes(interval));
     m_refreshTimer.start();
 }
 
diff --git a/src/plugins/coreplugin/locator/locatorwidget.cpp b/src/plugins/coreplugin/locator/locatorwidget.cpp
index 5876c20827c..6b008ccc13a 100644
--- a/src/plugins/coreplugin/locator/locatorwidget.cpp
+++ b/src/plugins/coreplugin/locator/locatorwidget.cpp
@@ -612,7 +612,8 @@ LocatorWidget::LocatorWidget(Locator *locator)
     m_progressIndicator->raise();
     m_progressIndicator->hide();
     m_showProgressTimer.setSingleShot(true);
-    m_showProgressTimer.setInterval(50); // don't show progress for < 50ms tasks
+    using namespace std::chrono_literals;
+    m_showProgressTimer.setInterval(50ms); // don't show progress for < 50ms tasks
     connect(&m_showProgressTimer, &QTimer::timeout,
             this, [this] { setProgressIndicatorVisible(true); });
 
diff --git a/src/plugins/coreplugin/outputwindow.cpp b/src/plugins/coreplugin/outputwindow.cpp
index dfc7e0c9d87..7e32bcc807d 100644
--- a/src/plugins/coreplugin/outputwindow.cpp
+++ b/src/plugins/coreplugin/outputwindow.cpp
@@ -37,6 +37,7 @@
 const int chunkSize = 10000;
 
 using namespace Utils;
+using namespace std::chrono_literals;
 
 namespace Core {
 
@@ -89,7 +90,7 @@ OutputWindow::OutputWindow(Context context, const Key &settingsKey, QWidget *par
     d->formatter.setPlainTextEdit(this);
 
     d->queueTimer.setSingleShot(true);
-    d->queueTimer.setInterval(10);
+    d->queueTimer.setInterval(10ms);
     connect(&d->queueTimer, &QTimer::timeout, this, &OutputWindow::handleNextOutputChunk);
 
     d->settingsKey = settingsKey;
@@ -149,7 +150,7 @@ OutputWindow::OutputWindow(Context context, const Key &settingsKey, QWidget *par
     cutAction->setEnabled(false);
     copyAction->setEnabled(false);
 
-    d->scrollTimer.setInterval(10);
+    d->scrollTimer.setInterval(10ms);
     d->scrollTimer.setSingleShot(true);
     connect(&d->scrollTimer, &QTimer::timeout,
             this, &OutputWindow::scrollToBottom);
diff --git a/src/plugins/coreplugin/welcomepagehelper.cpp b/src/plugins/coreplugin/welcomepagehelper.cpp
index 9854991f3d8..4fb0cd08079 100644
--- a/src/plugins/coreplugin/welcomepagehelper.cpp
+++ b/src/plugins/coreplugin/welcomepagehelper.cpp
@@ -644,7 +644,8 @@ void ListItemDelegate::goon()
 SectionedGridView::SectionedGridView(QWidget *parent)
     : QStackedWidget(parent)
 {
-    m_searchTimer.setInterval(320);
+    using namespace std::chrono_literals;
+    m_searchTimer.setInterval(320ms);
     m_searchTimer.setSingleShot(true);
     connect(&m_searchTimer, &QTimer::timeout, this, [this] {
         setSearchString(m_delayedSearchString);