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docs/reference/input/running-time.md

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+# Running Time
+
+Get the number of milliseconds elapsed since the script began. 1,000 milliseconds = 1 second.
+
+```sig
+input.runningTime();
+```
+
+### Returns
+
+* [Number](/microbit/reference/types/number)
+
+### Example: elapsed time
+
+This code gets the elapsed time since the start of the program execution and displays it on the screen.
+
+```blocks
+let now = input.runningTime()
+basic.showNumber(now)
+```
+
+### Lessons
+
+[speed button](/microbit/lessons/speed-button)
+
+### See also
+
+[show number](/microbit/reference/basic/show-number), [pause](/microbit/reference/basic/pause)
+