Swim Pace Calculator
Convert swim distance, time and pace for 25m, 50m and yard pools. Build 100/200/400/1500 split tables and estimate critical swim speed (CSS) from two timed efforts.
| Distance | Split time | Pool lengths |
|---|
Run pace: Pace calculator | race prediction: Race time predictor | energy estimate: Calories burned.
How to use
Choose whether you know total time, pace per 100 m, or two CSS efforts. The calculator converts the result into pace, speed, and common training splits.
Swim Pace Calculator helps athletes and everyday trainees get a clear, actionable number they can use in the gym, on the road or in the pool — without uploading any data. All calculations run locally in your browser.
Use the presets to learn the expected inputs, then adjust for your own session. Export or share the result when you want a training log or a quick plan for your next workout.
FAQ
What can I use Swim Pace Calculator for?
Convert swim distance, time and pace for 25m, 50m and yard pools. Build 100/200/400/1500 split tables and estimate critical swim speed (CSS) from two timed efforts. It is built for practical training decisions, not medical diagnosis.
How do I use Swim Pace Calculator correctly?
Start with an example or preset, then replace the values with your own measured weight, time, distance or heart rate. Small input errors can change the output a lot.
How accurate is Swim Pace Calculator?
Formulas and tables are widely used coaching estimates. Individual fitness, sleep, heat and technique still matter — treat the result as a guide and progress gradually.
Is my data uploaded?
No. Inputs stay in your browser. Optional session history uses localStorage on this device only.
Is this medical or coaching advice?
No. It is a free educational calculator. Consult a qualified coach or clinician for personalised programmes, especially if you have injuries or health conditions.
Can I share or export the result?
Yes. Most pages support copy, CSV download and a shareable result image so you can keep a log or send the plan to a training partner.