Swimming Pace Calculator
Calculate swimming pace per 100m or 100yd from total distance and time.
Returns split time, total session time, and estimated calorie burn by stroke type.
Swim pace is measured per 100 meters or per 100 yards — the standard distance units used across competitive swimming. Pace calculations help swimmers set interval training targets, predict race times, and track improvement.
Core formulas: Pace per 100m = Total Time ÷ (Total Distance ÷ 100) Total Race Time = (Race Distance ÷ 100) × Pace per 100m SWOLF Score = Strokes per Length + Seconds per Length (efficiency metric)
Unit conversions:
- 1 yard = 0.9144 meters
- 1 meter = 1.0936 yards
- 100 meters ≈ 109.36 yards
- Yards to meters pace: Meters pace ≈ Yards pace × 1.1 (approximately 10% slower)
Pool size reference:
- Short course yards (SCY) — 25 yards. Used in most U.S. high school and college pools.
- Short course meters (SCM) — 25 meters. Used in international short course competitions.
- Long course meters (LCM) — 50 meters. Olympic standard.
Stroke rate and distance per stroke: Distance Per Stroke (DPS) = Distance ÷ Stroke Count Stroke Rate = Strokes ÷ Time (strokes per minute) Higher DPS with the same or lower stroke rate indicates better technique efficiency.
Worked example: A swimmer completes a 1,500m race in 18:45 (1,125 seconds). Pace = 1,125 ÷ (1,500 ÷ 100) = 1,125 ÷ 15 = 75 seconds per 100m (1:15/100m)
In a 25m pool: this requires 60 lengths. If taking 22 strokes per 25m length in 28 seconds: SWOLF = 22 + 28 = 50 (lower SWOLF = more efficient swimmer)
Competitive reference paces (open water / Olympic):
- Elite men’s 1,500m freestyle world record pace: ~55 sec/100m
- Elite women’s: ~59 sec/100m
- Recreational club swimmer: 90–120 sec/100m
- Beginner: 150–200+ sec/100m
Interval training target: swim at 5–10% faster than your target race pace for shorter intervals.