Being an avid runner that likes to run in races, I find that there are many different calculations that I perform on a routine basis. It used to be I would have to use a number of online calculators or simply take the long route and do conversions myself. That was until I received my Android phone and found Running Calc. Running Calc is great! It contains a number of different running related calculations ranging from results predicting, splits, pace, and speed with both mile and kilometer options. It does all these calculations in one main screen that has an easy to use UI. I especially like how certain results are displayed dynamically in the title bar as you change input parameters. If you are a casual or serious runner, and you are looking for an accurate, easy to use running calculator with a number of options, I am certain that Running Calc will work for what you.