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Both calculators run independently — change the inputs on either side to compare results.

Swimming Training Zone Calculator

Calculate interval target times and work-to-rest breakdowns for any training zone based on your T-pace. Perfect for structured swim workouts.

T-Pace (100m threshold time) (seconds)

Training Distance

Training Zone

Work to Rest Ratio

Fill in the required fields to see your result.

Swimming

Swimming Training Zone Calculator

Calculates target swim training zones by combining your threshold pace and heart rate data. Use it to plan structured swim workouts that hit specific aerobic or anaerobic goals.

Threshold Pace (per 100) (seconds)

Resting Heart Rate (bpm)

Maximum Heart Rate (bpm)

Training Zone

Fill in the required fields to see your result.

Key differences

	Swimming Training Zone Calculator	Swimming Training Zone Calculator
Category	Swimming	Swimming
Inputs required	4	4
Result	Total Interval Time (seconds)	Target Pace (seconds per 100)
What it does	Calculate interval target times and work-to-rest breakdowns for any training zone based on your T-pace. Perfect for structured swim workouts.	Calculates target swim training zones by combining your threshold pace and heart rate data. Use it to plan structured swim workouts that hit specific aerobic or anaerobic goals.