Free rowing tools
Good decisions start with better numbers.
Pace, watts, zones, drag factor and race strategy. Every tool is free and ready to use without an account.
Live PM5 Monitor
Connect to your Concept2 PM5 and see live pace, watts, stroke rate and more.
OpenErg Split Calculator
Convert between pace, watts, calories and speed with full unit support.
Open2k Pace Predictor
Predict a time over any distance from a known performance.
OpenTraining Zone Calculator
Calculate training zones from your 2k time or maximum heart rate.
OpenProjected Splits
Get a recommended target split for any distance.
OpenWatts ↔ Split Converter
Quick bidirectional conversion between watts and pace.
OpenWeight-Adjusted Score
Calculate your weight-adjusted 2k erg score.
OpenDrag Factor Guide
Find the right drag factor for your build, experience and discipline.
OpenRace Strategy Planner
Build a split-by-split pacing plan for your next race.
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