diff --git a/src/libs/vgeometry/varc.cpp b/src/libs/vgeometry/varc.cpp
index 6637d3ad7..2936c1036 100644
--- a/src/libs/vgeometry/varc.cpp
+++ b/src/libs/vgeometry/varc.cpp
@@ -123,7 +123,7 @@ VArc::~VArc()
  */
 qreal VArc::GetLength() const
 {
-    qreal length = (M_PI * d->radius)/180 * AngleArc();
+    qreal length = d->radius * qDegreesToRadians(AngleArc());
     if (d->isFlipped)
     {
         length *= -1;
@@ -232,7 +232,7 @@ QVector<QPointF> VArc::GetPoints() const
 
     for (int i = 0; i < sectionAngle.size(); ++i)
     {
-        const qreal lDistance = GetRadius() * 4.0/3.0 * qTan(M_PI/180.0 * sectionAngle.at(i) * 0.25);
+        const qreal lDistance = GetRadius() * 4.0/3.0 * qTan(qDegreesToRadians(sectionAngle.at(i)) * 0.25);
 
         const QPointF center = GetCenter().toQPointF();
 
@@ -297,7 +297,8 @@ QPointF VArc::CutArc(const qreal &length, VArc &arc1, VArc &arc2) const
         len = length;
     }
 
-    qreal n = (len*180)/(M_PI*d->radius); // n - is angle in degrees
+    qreal n = qRadiansToDegrees(len/d->radius); // n - is angle in degrees
+
     QLineF line(GetCenter().toQPointF(), GetP1());
     line.setAngle(line.angle()+n);
 
@@ -374,7 +375,7 @@ void VArc::FindF2(qreal length)
         length = MaxLength();
     }
 
-    qreal arcAngle = (qAbs(length)*180)/(M_PI*d->radius);
+    qreal arcAngle = qAbs(qRadiansToDegrees(length/d->radius));
 
     if (d->isFlipped)
     {