diff --git a/src/components/WorkoutStats.tsx b/src/components/WorkoutStats.tsx
index 945878d..6359679 100644
--- a/src/components/WorkoutStats.tsx
+++ b/src/components/WorkoutStats.tsx
@@ -1,27 +1,6 @@
 import React from 'react';
-import { stats, Workout, Duration, Intensity } from 'make-workout';
-
-const splitDuration = (duration: Duration) => ({
-  hours: Math.floor(duration.seconds / 60 / 60),
-  minutes: Math.floor(duration.seconds / 60) % 60,
-  seconds: duration.seconds % 60,
-});
-
-const formatDuration = (duration: Duration): string => {
-  const {hours, minutes, seconds} = splitDuration(duration);
-  if (hours > 0) {
-    return `${hours}h ${minutes}min`;
-  }
-  else if (minutes > 0) {
-    return `${minutes}min`;
-  }
-  else if (seconds > 0) {
-    return `${seconds}sec`;
-  }
-  else {
-    return `-`;
-  }
-};
+import { stats, Workout, Intensity } from 'make-workout';
+import { formatDuration } from './formatDuration';
 
 const formatIntensity = (intensity: Intensity): string => `${Math.round(intensity.value * 100)}%`;
 
diff --git a/src/components/formatDuration.ts b/src/components/formatDuration.ts
new file mode 100644
index 0000000..877b0ab
--- /dev/null
+++ b/src/components/formatDuration.ts
@@ -0,0 +1,23 @@
+import { Duration } from "make-workout";
+
+const splitDuration = (duration: Duration) => ({
+  hours: Math.floor(duration.seconds / 60 / 60),
+  minutes: Math.floor(duration.seconds / 60) % 60,
+  seconds: duration.seconds % 60,
+});
+
+export const formatDuration = (duration: Duration): string => {
+  const {hours, minutes, seconds} = splitDuration(duration);
+  if (hours > 0) {
+    return `${hours}h ${minutes}min`;
+  }
+  else if (minutes > 0) {
+    return `${minutes}min`;
+  }
+  else if (seconds > 0) {
+    return `${seconds}sec`;
+  }
+  else {
+    return `-`;
+  }
+};