Smart tools
for smart runners

A fast, accurate toolbox to compute pace, plan your next race and progress. No signup required, 100% free.

Convert pace, time and distance in min/km or min/mi with automatic splits.

Predict your 5K, 10K, half and full marathon times from a recent race (Riegel).

Compute your 5 heart rate zones using the Karvonen (HR reserve) method.

Estimate your VO₂max from a race time (Daniels & Gilbert).

Estimate calories burned from weight, duration and intensity (MET method).

Build a per-km pacing plan (even, negative or progressive splits).

Ready to go further?

Konquo turns every stride into territorial conquest. Try the beta on iOS and Android.