diff --git a/include/tug/Grid.hpp b/include/tug/Grid.hpp
index b2abdc2..db88429 100644
--- a/include/tug/Grid.hpp
+++ b/include/tug/Grid.hpp
@@ -121,17 +121,17 @@ class Grid {
         /**
          * @brief Sets the domain length of a 1D-Grid. Grid must be one dimensional. 
          * 
-         * @param domainLength An integer of the domain length. Must be positive. 
+         * @param domainLength A double value of the domain length. Must be positive.
          */
-        void setDomain(int domainLength);
+        void setDomain(double domainLength);
 
         /**
          * @brief Sets the domain size of a 2D-Grid. Grid must be two dimensional.
          * 
-         * @param domainRow An integer of the domain size in y-direction. Must be positive. 
-         * @param domainCol An integer of the domain size in x-direction. Must be positive. 
+         * @param domainRow A double value of the domain size in y-direction. Must be positive. 
+         * @param domainCol A double value of the domain size in x-direction. Must be positive. 
          */
-        void setDomain(int domainRow, int domainCol);
+        void setDomain(double domainRow,double domainCol);
 
         /**
          * @brief Gets the delta value for 1D-Grid. Grid must be one dimensional.
@@ -160,12 +160,12 @@ class Grid {
         int col; // number of grid columns
         int row; // number of grid rows
         int dim; // 1D or 2D
-        int domainCol; // number of domain columns
-        int domainRow; // number of domain rows
+        double domainCol; // number of domain columns
+        double domainRow; // number of domain rows
         double deltaCol; // delta in x-direction (between columns)
         double deltaRow; // delta in y-direction (between rows)
         MatrixXd concentrations; // Matrix holding grid concentrations 
         MatrixXd alphaX; // Matrix holding alpha coefficients in x-direction
         MatrixXd alphaY; // Matrix holding alpha coefficients in y-direction
 
-};
\ No newline at end of file
+};
diff --git a/src/Grid.cpp b/src/Grid.cpp
index e215e9a..dd4ef18 100644
--- a/src/Grid.cpp
+++ b/src/Grid.cpp
@@ -117,7 +117,7 @@ int Grid::getCol() {
     return col;
 }
 
-void Grid::setDomain(int domainLength) {
+void Grid::setDomain(double domainLength) {
     if (dim != 1) {
         throw_invalid_argument("Grid is not one dimensional, you should probaly use the 2D domain setter!");
     }
@@ -129,7 +129,7 @@ void Grid::setDomain(int domainLength) {
     this->deltaCol = double(this->domainCol)/double(this->col);
 }
 
-void Grid::setDomain(int domainRow, int domainCol) {
+void Grid::setDomain(double domainRow, double domainCol) {
     if (dim != 2) {
         throw_invalid_argument("Grid is not two dimensional, you should probably use the 1D domain setter!");
     }