Calcpace: pace, races, VO2max

Calcpace is the running calculator that also analyzes your runs. Whether you want your pace for a race, how long a half marathon will take you, or what yesterday's workout really said about your fitness, it gives you the answer — no social network, no premium plan, no in-app ads. With Calcpace you can: • Calculate pace, time and distance for any run • Get a Result Breakdown for any finish time: pace, predictions, VO2max, training paces and splits • Predict your race time with the Riegel and Cameron formulas • See your equivalent 5K, 10K, half marathon and marathon times • Estimate your VO2max from your best times • See your age grade: how your time compares with the world standard for your age and sex • Adjust your pace for temperature and altitude • Find races near you in the race calendar • Convert km, miles, min/km, min/mi, km/h and mph And when you sign in to your account: • Upload the GPX file from your watch or running app • See how long you spent in each heart-rate zone • Analyze your per-kilometer splits, cadence and stride • Compare one run with another over the same distance • Read what each run says in your own context, not against a generic table • Track your personal records from 400 m to the marathon • Watch your fitness change over the months Your data stays yours: export it as CSV whenever you like, delete your account and everything with it at any time, and no health data is stored without your explicit consent. Free, in 15 languages.