Swimming Tools
Whether you're training for a triathlon swim or open water race, our swimming tools help you understand your pace per 100m and calorie expenditure across stroke types.
Swimming pace is expressed differently from running and cycling — in time per 100 meters (or 100 yards), not per kilometer. A competitive age-group triathlete typically swims 1:30–1:50 per 100m; a recreational swimmer working toward their first triathlon averages 2:00–2:30 per 100m.
Swim pace calculators convert any distance and total time into per-100m pace, helping you set interval training targets and predict finish times for triathlon swims at any distance.
Swimming calorie calculators estimate energy expenditure based on stroke type, pace, and body weight using MET values from the Compendium of Physical Activities (Ainsworth et al., 2011). Key insight: butterfly burns approximately 60% more calories per minute than backstroke at the same perceived effort, and cold water swimming increases thermogenic calorie burn beyond what MET tables capture.
Open water swimming introduces variables not present in pool training — navigation overhead, no flip turns, wetsuit buoyancy effects, and variable conditions. A wetsuit typically improves 100m pace by 3–8 seconds through added buoyancy and drag reduction.
