diff --git a/App.js b/App.js
index 4165be5c..8c31b6d5 100644
--- a/App.js
+++ b/App.js
@@ -50,6 +50,12 @@ const chartConfigs = [
     backgroundGradientTo: "#ffffff",
     color: (opacity = 1) => `rgba(0, 0, 0, ${opacity})`
   },
+  {
+    backgroundColor: "#ffffff",
+    backgroundGradientFrom: "#ffffff",
+    backgroundGradientTo: "#ffffff",
+    color: (opacity = 1) => `rgba(0, 0, 0, ${opacity})`
+  },
   {
     backgroundColor: "#26872a",
     backgroundGradientFrom: "#43a047",
@@ -172,6 +178,19 @@ export default class App extends React.Component {
                 height={220}
                 chartConfig={chartConfig}
               />
+              <Text style={labelStyle}>
+                Stacked Bar Graph with custom Y labels
+              </Text>
+              <StackedBarChart
+                style={graphStyle}
+                data={stackedBarGraphData}
+                width={width}
+                height={220}
+                chartConfig={chartConfig}
+                formatYLabel={input => {
+                  return +input * 2;
+                }}
+              />
               <Text style={labelStyle}>Stacked Bar Graph Percentile</Text>
               <StackedBarChart
                 style={graphStyle}
diff --git a/src/StackedBarChart.tsx b/src/StackedBarChart.tsx
index d8db7165..8aaee0e3 100644
--- a/src/StackedBarChart.tsx
+++ b/src/StackedBarChart.tsx
@@ -48,6 +48,8 @@ export interface StackedBarChartProps extends AbstractChartProps {
   segments?: number;
 
   percentile?: boolean;
+
+  formatYLabel?: (yLabel: string) => string;
 }
 
 type StackedBarChartState = {};
@@ -185,6 +187,9 @@ class StackedBarChart extends AbstractChart<
       segments = 4,
       decimalPlaces,
       percentile = false,
+      formatYLabel = (yLabel: string) => {
+        return yLabel;
+      },
       hideLegend = false
     } = this.props;
 
@@ -242,7 +247,8 @@ class StackedBarChart extends AbstractChart<
                   data: [0, border],
                   paddingTop,
                   paddingRight,
-                  decimalPlaces
+                  decimalPlaces,
+                  formatYLabel
                 })
               : null}
           </G>