Swimming Pace Calculator
Based on your best 400m swim time + pool-length pace.
Swim
Sunday 23rd July 2023
Do3 Performance Tools
Training Calculators
Swim pacing, cycling FTP, running paces & zones, heart-rate zones, and pace conversion between min/mile and min/km.
Cycling FTP Calculator
Estimate FTP from a 20-minute test (×0.93).
Bike
Running Threshold Pace Calculator
From 5K time: pace per mile/km + threshold pace + estimated 10K time.
Run
Run Pace Zones + Heart Rate Zones
Pace zones from 5K pace (existing logic). HR zones from threshold HR.
Zones
Pace Converter
Convert min/mile ↔ min/km (1 mile = 1.609344 km).
Convert
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