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Sport & fitness
16 free tools for runners, cyclists and anyone who trains: pace and speed, training paces and race time predictions, analyzing and merging GPX tracks, hiking times, FTP power zones and bike gears, one-rep max and barbell plates, an interval timer, calories burned and round-robin fixtures.
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Merge GPX tracks
Several GPX or TCX files become one single track, in time order.
Hiking time calculator
Walking hours from distance and ascent, plus arrival time and daylight margin.
Training paces (VDOT)
The five running paces from a recent race, with ranges and session limits.
GPX track analyzer
Distance, real elevation gain, gradients and profile from a GPX or TCX file.
FTP power zones
The 7 Coggan zones in watts
Bike gear calculator
Rollout and speed at your cadence
All tools, A to Z 16
Barbell plates
Which plates to load per side, given the weight.
Bike gear calculator
Rollout and speed at your cadence
Calories burned
How many calories you burn by activity, weight and time.
Calories walking
Calories and steps based on weight and km walked.
FTP power zones
The 7 Coggan zones in watts
GPX track analyzer
Distance, real elevation gain, gradients and profile from a GPX or TCX file.
Hiking time calculator
Walking hours from distance and ascent, plus arrival time and daylight margin.
Interval timer (HIIT)
Work/rest/rounds with sound alert, for fitness.
Merge GPX tracks
Several GPX or TCX files become one single track, in time order.
One-rep max
Estimate your 1RM from weight and reps.
Pace ⇄ speed
From pace (min/km) to km/h and pace per mile.
Race time prediction
Predict your time over another distance (Riegel).
Round-robin generator
League schedule with standings
Running pace
Pace (min/km) and speed from distance and time.
Training paces (VDOT)
The five running paces from a recent race, with ranges and session limits.
VO2max (Cooper)
Estimate VO2max from meters run in 12 minutes.