Rowing VO2max Estimator

By the Watta Team · Updated March 2026

The rowing VO2max estimator calculates maximal aerobic capacity from a 2,000-metre rowing ergometer test time using the Hagerman regression formula. VO2max (maximal oxygen uptake, measured in mL/kg/min) is the gold standard for aerobic fitness. The 2K rowing erg test is one of the most reliable field tests for predicting VO2max because it demands near-maximal aerobic output sustained for 6-8 minutes. The Hagerman formula, derived from laboratory testing of competitive rowers, converts average watts during a 2K to absolute VO2 (mL/min), then divides by body weight for relative VO2max. This metric allows meaningful comparison across body sizes and between sports.

VO2max Estimator from 2K Time

minsec
kg
Estimated VO2max62.7 mL/kg/min4701 mL/min absoluteElite

How This Works

Enter your 2K erg time and body weight. The calculator derives your average power output in watts from your split time using the Concept2 formula, then applies the Hagerman equation: VO2 (mL/min) = 14.72 × watts + 250.39. Dividing by body weight gives your relative VO2max in mL/kg/min. The result is classified against population norms, with separate categories for male and female athletes. Higher values indicate greater aerobic capacity.

Formula

VO2 (mL/min) = 14.72 × watts + 250.39, then VO2max (mL/kg/min) = VO2 / body_weight_kg

Examples

2K time of 7:00 at 80 kg body weight

Average watts ≈ 276W, absolute VO2 ≈ 4311 mL/min, relative VO2max ≈ 53.9 mL/kg/min — "Excellent" classification for males.

2K time of 6:20 at 90 kg

Average watts ≈ 358W, absolute VO2 ≈ 5518 mL/min, relative VO2max ≈ 61.3 mL/kg/min — approaching "Elite" classification.

2K time of 7:40 at 65 kg (female)

Average watts ≈ 222W, absolute VO2 ≈ 3518 mL/min, relative VO2max ≈ 54.1 mL/kg/min — "Elite" classification for females.

Benchmarks

LevelValue
Elite Male60+ mL/kg/min
Excellent Male52-60 mL/kg/min
Good Male45-52 mL/kg/min
Elite Female56+ mL/kg/min
Excellent Female47-56 mL/kg/min

Watta Integration

Watta tracks your average watts and body weight, enabling automatic VO2max estimation for every workout. Watch your aerobic fitness trend over weeks and months.

Frequently Asked Questions

Related Content

2K Time PredictorHR Zone CalculatorPower-to-Weight CalculatorAerobic ThresholdThe aerobic threshold is the exercise intensity at which lactate begins to accumulate above resting levels, typically occurring at 55-70% of VO2 max in rowers.2K TestA 2K test is a 2,000-metre maximal effort rowing ergometer test — the standard benchmark for indoor rowing performance, used for team selection and fitness assessment.2K Rowing Test GuideHeart Rate Training for Rowing
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