11 free calculators, no sign-up
Endurance calculators
Pace, MAS, heart rate zones, swimming, cycling, trail running, triathlon: free calculators, no sign-up, with the method and sources behind every calculation.
Running
Pace, time and predicted time
Your pace, your speed and your predicted time over another distance.
10 km in 50:005:00 /kmCalculateMAS and training paces
Your MAS from a 6-minute test, then your training paces.
1,600 m in 6 minMAS 16 km/hCalculateEstimated VO2max
Your estimated VO2max and your equivalent times, from 5K to marathon.
10 km in 50:00VDOT 40CalculateSplit times
Your split times at every kilometre to hit your goal.
Half marathon in 1:45:0010 km in 49:46CalculatePace and speed converter
From min/km to km/h, from kilometres to miles, both ways.
12 km/h5:00 /kmCalculateTreadmill and incline
The outdoor pace that matches your treadmill session.
12 km/h at 1% incline5:00 /km outdoorsCalculate
Heart rate, swimming, cycling, trail and triathlon
- All sports
Heart rate zones
Your estimated max heart rate and your 5 heart rate zones, in beats per minute.
Age 30Max HR 187Calculate - Swimming
Swim pace (CSS)
Your threshold pace per 100 m, from a 400 and a 200.
400 in 7:00, 200 in 3:201:50 /100 mCalculate - Cycling
FTP and power zones
Your FTP from a 20-minute test, and your 7 power zones.
250 W over 20 minFTP 238 WCalculate - Trail running
Trail effort-km
Your race converted into effort kilometres, elevation included.
30 km and 1,500 m of climbing45 effort kmCalculate - Triathlon
Triathlon time
Your total time, transitions included, from sprint to Ironman.
Olympic: 2:00 /100 m, 30 km/h, 5:15 /km, transitions 3:302:46:00Calculate
What if KILYO worked it out for you?
KILYO reads the sessions from your watch, works out your paces, zones and training load from your real data, then adjusts your plan week after week.