diff --git a/dumux/geometry/circumsphere.hh b/dumux/geometry/circumsphere.hh
new file mode 100644
index 0000000000000000000000000000000000000000..e7bd64d7d0b0704d5b58a10a97874c9f965cdca5
--- /dev/null
+++ b/dumux/geometry/circumsphere.hh
@@ -0,0 +1,64 @@
+/*****************************************************************************
+ *   See the file COPYING for full copying permissions.                      *
+ *                                                                           *
+ *   This program is free software: you can redistribute it and/or modify    *
+ *   it under the terms of the GNU General Public License as published by    *
+ *   the Free Software Foundation, either version 3 of the License, or       *
+ *   (at your option) any later version.                                     *
+ *                                                                           *
+ *   This program is distributed in the hope that it will be useful,         *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of          *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
+ *   GNU General Public License for more details.                            *
+ *                                                                           *
+ *   You should have received a copy of the GNU General Public License       *
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.   *
+ *****************************************************************************/
+/*!
+ * \file
+ * \ingroup Geometry
+ * \brief A function to compute the circumsphere of a given geometry
+ * \note The circumscribed sphere (or circumsphere) is a sphere touching all vertices of the geometry
+ *       Therefore it does not necessarily exist for all geometries.
+ */
+#ifndef DUMUX_GEOMETRY_CIRCUMSPHERE_HH
+#define DUMUX_GEOMETRY_CIRCUMSPHERE_HH
+
+#include <type_traits>
+#include <dumux/common/math.hh>
+#include <dumux/geometry/sphere.hh>
+
+namespace Dumux {
+
+/*!
+ * \ingroup Geometry
+ * \brief Computes the circumsphere of a triangle
+ * \note See https://www.ics.uci.edu/~eppstein/junkyard/circumcenter.html
+ */
+template<class Point>
+static inline Sphere<typename Point::value_type, Point::dimension>
+circumSphereOfTriangle(const Point& a, const Point& b, const Point& c)
+{
+    const auto ac = c - a;
+    const auto ab = b - a;
+    const auto n = crossProduct(ab, ac);
+    const auto distCenterToA = (crossProduct(n, ab)*ac.two_norm2() + crossProduct(ac, n)*ab.two_norm2()) / (2.0*n.two_norm2());
+
+    return { a + distCenterToA, distCenterToA.two_norm() };
+}
+
+/*!
+ * \ingroup Geometry
+ * \brief Computes the circumsphere of a triangle
+ */
+template<class Geometry, typename std::enable_if_t<Geometry::mydimension == 2, int> = 0>
+static inline Sphere<typename Geometry::ctype, Geometry::coorddimension>
+circumSphereOfTriangle(const Geometry& triangle)
+{
+    assert(triangle.corners() == 3 && "Geometry is not a triangle.");
+    return circumSphereOfTriangle(triangle.corner(0), triangle.corner(1), triangle.corner(2));
+}
+
+} // end namespace Dumux
+
+#endif