TimeCalc is a personal coding project. It is written and maintained by Chris Hamer-Hodges. I am a keen runner and a run leader for the Nuneaton Harriers. I wrote it to assist with pacing and timing calculations. These can be done using Google sheets, but I soon cluttered up my Google drive with all these disposable sheets just to perform simple time-based calculations. And so I wrote TimeCalc. If you are using TimeCalc I'd love to hear from you. Whether your experience is good or bad.