Tools you might need next
Calculate swimming pace per 100m or 100yd from split times and distance. Convert between pace formats for pool and open water training plans.
Calculate calories burned swimming by stroke, intensity, duration, and body weight. Estimate energy expenditure for pool and open water workouts.
Calculate critical swim speed (CSS) threshold pace from 400m and 200m time trial results. Set aerobic training zones for swimmers and triathletes.
One lap equals two lengths in US convention (down and back) or one length in metric convention. Specify which counting method you use.
Distance = Laps × Pool lengthDivide goal distance by pool length and round up for partial laps. A mile (1650 yd) in a 25yd pool requires 66 lengths or 33 laps.
Laps = Target distance ÷ Pool lengthCompetitive swim miles differ from land miles. Open water and triathlon often use 1500m or 1650yd as the 'mile' distance.
1 mile = 1650 yd = 1500m (swim mile) | 1 km = 1000mUpdated: July 2026
In a 25m pool, 2000m equals 80 lengths (40 laps down-and-back). Track progress toward daily distance goals.
Count 200 laps in a 25yd pool for 5000 yards total — verify distance for charity event minimum requirements.
A 30-lap workout in 50m long-course equals 3000m versus 1500m in a 25m short-course pool for the same lap count.
Pool swimming distance depends on whether you count laps (pool length to pool length) or lengths (one direction). Enter lap count, pool length, and unit to calculate total distance in meters, yards, or miles for workout logging.