How do I calculate my swimming pace?

Divide your total swim time (in seconds) by the distance (in yards or meters) and multiply by 100. This gives your pace per 100 yards/meters. For example, 500 yards in 10 minutes = 600 sec ÷ 500 × 100 = 2:00 per 100 yards.

What is Critical Swim Speed (CSS)?

CSS is the fastest swimming pace you can sustain aerobically. It is calculated from two time trials: a 400 and a 200. CSS (m/s) = (400−200) meters ÷ (T400−T200) seconds. It is used to set training zones.

SWOLF = time per length (seconds) + strokes per length. A lower SWOLF score indicates more efficient swimming. Elite swimmers have SWOLF around 30–35; recreational swimmers are often 45–60.

What is a good swimming pace?

Recreational swimmers average 2:00–3:00 per 100 yards. Competitive age-groupers aim for 1:20–1:50. Elite swimmers are under 1:00 per 100 yards for freestyle sprints.

Should I use yards or meters for pool training?

US pools are typically 25 yards or 50 meters. European and Olympic pools are 50 meters. Check your pool length before calculating pace. 1 yard = 0.9144 meters.

Swimming Pace Calculator

Calculate your swimming pace per 100 yards or meters, predict race times, plan splits, and find your Critical Swim Speed (CSS) and training zones. For freestyle, backstroke, breaststroke, and butterfly.

Distance (yards) ?

Time (minutes)

min

Time (seconds)

sec

Pace per 100 yards

—

Speed (m/s) —

Est. Calories Burned —

Extended More scenarios, charts & detailed breakdown ▾

Distance (yards)

Minutes

Seconds

Unit

Pace per 100

—

Speed (m/s) —

Total Time —

Professional Full parameters & maximum detail ▾

CSS Test: 400 Distance (yards)

CSS Test: 400 Time (min)

CSS Test: 400 Time (sec)

CSS Test: 200 Time (min)

CSS Test: 200 Time (sec)

Stroke Type

Body Weight (lbs)

CSS & Training Zones

CSS (Critical Swim Speed) —

Zone 1 (Recovery — 80% CSS) —

Zone 2 (Aerobic — 88% CSS) —

Zone 3 (Threshold — 95% CSS) —

Zone 4 (VO2max — 103% CSS) —

Efficiency & Calories

Estimated SWOLF —

Calories per Hour (stroke-adjusted) —

How to Use This Calculator

Enter your distance in yards and time (minutes and seconds).
See your pace per 100 yards, speed in m/s, and estimated calories burned.
Use Race Prediction to estimate times for 100, 200, 500, 1000, and 1650 yard events.
Use Splits to plan even or negative split targets for a goal time.
Use the Professional tab with your 400 and 200 time trials to calculate CSS and training zones.

Formula

Pace per 100 yd = (Total seconds ÷ Distance) × 100

CSS (m/s) = (400 − 200) × 0.9144 ÷ (T₄₀₀ − T₂₀₀)

Example

Example: 500 yards in 10:00. Pace = 600 ÷ 500 × 100 = 120 seconds = 2:00 per 100 yards. Speed = 500 × 0.9144 ÷ 600 = 0.762 m/s.

Frequently Asked Questions

Divide your total swim time (in seconds) by the distance (in yards or meters) and multiply by 100. This gives your pace per 100 yards/meters. For example, 500 yards in 10 minutes = 600 sec ÷ 500 × 100 = 2:00 per 100 yards.
CSS is the fastest swimming pace you can sustain aerobically. It is calculated from two time trials: a 400 and a 200. CSS (m/s) = (400−200) meters ÷ (T400−T200) seconds. It is used to set training zones.
SWOLF = time per length (seconds) + strokes per length. A lower SWOLF score indicates more efficient swimming. Elite swimmers have SWOLF around 30–35; recreational swimmers are often 45–60.
Recreational swimmers average 2:00–3:00 per 100 yards. Competitive age-groupers aim for 1:20–1:50. Elite swimmers are under 1:00 per 100 yards for freestyle sprints.
US pools are typically 25 yards or 50 meters. European and Olympic pools are 50 meters. Check your pool length before calculating pace. 1 yard = 0.9144 meters.

Related Calculators

Sources & References (5) ▾

Costill DL & Kovaleski J — Fluid ingestion during distance running. Arch Environ Health. 1966;12:833-838 — USA Swimming reference
Pyne DB et al. — Progression and variability of competitive performance of Olympic swimmers. J Sports Sci. 2004;22(7):613-620 — Journal of Sports Sciences
Toubekis AG et al. — Critical velocity in swimming: a review. J Hum Kinet. 2011;27:117-136 — Journal of Human Kinetics
ACSM — Physical Activity Guidelines for Americans, 2nd Edition (2018) — ACSM
USA Swimming — Competitive Times and Standards — USA Swimming