diff --git a/libscience/chemicaldataobject.cpp b/libscience/chemicaldataobject.cpp
--- a/libscience/chemicaldataobject.cpp
+++ b/libscience/chemicaldataobject.cpp
@@ -171,7 +171,7 @@
 
 void ChemicalDataObject::setType(int type)
 {
-    d->m_type = (ChemicalDataObject::BlueObelisk) type;
+    d->m_type = static_cast<ChemicalDataObject::BlueObelisk>(type);
 }
 
 QString ChemicalDataObject::unitAsString() const
diff --git a/libscience/parser.cpp b/libscience/parser.cpp
--- a/libscience/parser.cpp
+++ b/libscience/parser.cpp
@@ -107,7 +107,7 @@
 
     // The integer.
     while (isdigit(m_nextChar)) {
-        result = result * 10.0 + (double)(m_nextChar - '0');
+        result = result * 10.0 + static_cast<double>(m_nextChar - '0');
         getNextChar();
     }
     *_result = result;
@@ -119,7 +119,7 @@
 
     double  decimal = 0.1;
     while (isdigit(m_nextChar)) {
-        result += decimal * (double)(m_nextChar - '0');
+        result += decimal * static_cast<double>(m_nextChar - '0');
         decimal /= 10.0;
         getNextChar();
     }
diff --git a/libscience/spectrum.cpp b/libscience/spectrum.cpp
--- a/libscience/spectrum.cpp
+++ b/libscience/spectrum.cpp
@@ -95,7 +95,7 @@
     foreach (Spectrum::peak *p, m_peaklist) {
         double newInt = p->intensity * 1000 / maxInt;
 
-        p->intensity = (int)qRound(newInt);
+        p->intensity = qRound(newInt);
     }
 }
 
diff --git a/src/detailinfodlg.cpp b/src/detailinfodlg.cpp
--- a/src/detailinfodlg.cpp
+++ b/src/detailinfodlg.cpp
@@ -163,7 +163,7 @@
     DOM::HTMLElement element = htmlpart->htmlDocument().body();
     if (element.tagName() == "body") {
         const QColor backgroundColor = palette().background().color();
-        ((DOM::HTMLBodyElement)element).setBgColor(backgroundColor.name());
+        (static_cast<DOM::HTMLBodyElement>(element)).setBgColor(backgroundColor.name());
     }
 
     htmlpart->end();
diff --git a/src/orbitswidget.cpp b/src/orbitswidget.cpp
--- a/src/orbitswidget.cpp
+++ b/src/orbitswidget.cpp
@@ -239,8 +239,8 @@
         DC.setPen(Qt::NoPen);
 
         for (int e = 0; e < *it; ++e) {
-            int x = (int)translateToDX(d / 2.0, (double)e, *it);
-            int y = (int)translateToDY(d / 2.0, (double)e, *it);
+            int x = static_cast<int>(translateToDX(d / 2.0, static_cast<double>(e), *it));
+            int y = static_cast<int>(translateToDY(d / 2.0, static_cast<double>(e), *it));
 
             //Creating a gradient for the current electron.
             QRadialGradient grad(QPointF(x + mx + d / 2 - r_electron / 2, y + my + d / 2 - r_electron / 2), r_electron);
diff --git a/src/spectrumwidget.cpp b/src/spectrumwidget.cpp
--- a/src/spectrumwidget.cpp
+++ b/src/spectrumwidget.cpp
@@ -152,7 +152,7 @@
     wavelength = KUnitConversion::Value(wavelength,KUnitConversion::UnitId(Prefs::spectrumWavelengthUnit()))
                  .convertTo(KUnitConversion::Nanometer).number();
 
-    int wavelength_ = (int)floor(wavelength);
+    int wavelength_ = static_cast<int>(floor(wavelength));
 
     if (wavelength_ < 380 || wavelength_ > 780) {
         return QColor(Qt::white);
@@ -216,7 +216,7 @@
     const int d = 10;
 
     //the total number of tickmarks to draw (small and long)
-    const int numberOfTickmarks = (int)floor((double)(width() / d));
+    const int numberOfTickmarks = static_cast<int>(floor(static_cast<double>(width() / d)));
 
     double pos = 0.0;
 
@@ -227,7 +227,7 @@
             if (i % 10 == 0 &&
                 i * d > space &&
                 i * d < width() - space) {
-                pos = (double)(i * d) / width();
+                pos = static_cast<double>((i * d) / width());
                 p->fillRect(i * d - space, m_realHeight + 12, 2 * space, 15, Qt::white);
                 p->drawText(i * d - space, m_realHeight + 12, 2 * space, 15, Qt::AlignCenter,
                             QString::number(KalziumUtils::strippedValue(Wavelength(pos))));
@@ -315,7 +315,7 @@
         resetSpectrum();
     }
 
-    findPeakFromMouseposition(Wavelength((double)e->pos().x() / width()));
+    findPeakFromMouseposition(Wavelength(static_cast<double>(e->pos().x() / width())));
 }
 
 void SpectrumWidget::findPeakFromMouseposition(double wavelength)
@@ -358,8 +358,8 @@
 void SpectrumWidget::mouseReleaseEvent(QMouseEvent *e)
 {
     if (e->button() == Qt::LeftButton) {
-        int left = (int)Wavelength((double)m_LMBPointPress.x() / width());
-        int right = (int)Wavelength((double)e->pos().x() / width());
+        int left = static_cast<int>(Wavelength(static_cast<double>(m_LMBPointPress.x()) / width()));
+        int right = static_cast<int>(Wavelength(static_cast<double>(e->pos().x()) / width()));
 
         if (left == right) {
             return;
diff --git a/src/tablesdialog.cpp b/src/tablesdialog.cpp
--- a/src/tablesdialog.cpp
+++ b/src/tablesdialog.cpp
@@ -267,7 +267,7 @@
 
 void MyTableWidget::contextMenuEvent(QContextMenuEvent* event)
 {
-    QMenu* menu = new QMenu((QWidget*) sender());
+    QMenu* menu = new QMenu(static_cast<QWidget*>(sender()));
     menu->addAction(i18n("&Copy"), this, SLOT(copyToClipboard()), QKeySequence(Qt::Key_C | Qt::CTRL));
     menu->exec(event->globalPos());
 }