Erg Pace Calculator

How do you read a 500m split?

The 500m split is the time it would take you to row 500 metres at your current pace. It is the standard rowing metric and shows up on every Concept2 ergometer display. Lower splits mean faster rowing. A 1:45.0 split means you would cover 500m in 1 minute 45 seconds, or 2,000m in 7:00.0 if you held that pace. Capturing splits across every session is the foundation of data-driven training, and clubs that log them automatically catch trends that paper logs miss.

Concept2 watts calculator: how does split convert to watts?

Concept2 publishes the exact relationship between split and power: watts = 2.80 / (split_in_seconds / 500)^3. Halving your split roughly increases power eight-fold, which is why getting from 1:50 to 1:40 is so much harder than from 2:00 to 1:50. This rowing watts calculator uses the canonical Concept2 formula so the numbers match what your erg displays and what gets logged in your club's training session record.

Concept2 calorie calculator: how are calories estimated?

Concept2 estimates calorie burn as kcal/hr = (watts * 4) + 300. The constant 300 represents basal metabolic rate during exercise. This rowing calorie calculator uses the same formula, so the figure matches what your erg display shows and what records against each athlete in the coach tools dashboard for tracking volume across a programme. Body mass and metabolism affect actual burn, so treat the number as a consistent training-volume metric rather than a precise calorie count.

Rowing split converter: how do you swap pace and time?

A split converter answers two related questions: given a 500m split, what's my time at any distance, and given a time at some distance, what was my split? Both directions use the same arithmetic: time = split * (distance / 500). A 1:50 split means 7:20 over 2k (1:50 * 4), 18:20 over 5k (1:50 * 10), and 22:00 over 6k (1:50 * 12). The calculator above runs both directions automatically and adds the watts and calories that go with each pace.

How does the score predictor work?

To predict your time at a different distance we use the Riegel formula: T2 = T1 * (D2 / D1)^1.06. The fatigue exponent 1.06 is well-established for endurance sports and matches observed erg-score scaling. This will not be perfect for everyone (lightweights tend to drop off faster, heavyweights hold pace better) but it is a strong starting point for setting training paces and benchmarking 2k readiness from longer aerobic pieces.

What pace zones do rowers train in?

Most coached rowing programmes split work into five zones, anchored to your 2k split:

• UT2 (steady aerobic): 18-20 strokes/minute, 2k pace + 12-15s
• UT1 (firm aerobic): 22-24 strokes/minute, 2k pace + 8-10s
• AT (anaerobic threshold): 26-28 strokes/minute, 2k pace + 4-5s
• TR (transport / race pace): 30-34 strokes/minute, 2k pace
• AN (anaerobic): 36+ strokes/minute, faster than 2k pace

Knowing your 2k split sets the anchor for every other zone. Use the predictor table above to estimate your 2k from a recent 5k or 6k if you have not done a flat-out 2k recently, or jump straight to the training pace calculator to convert a 2k into target splits, stroke rates and watts for each zone.

Erg score benchmarks by distance and standard

Rough guidance for what a "good" erg score looks like across distances. These are competitive openweight male targets - subtract roughly 5-15 seconds per 500m for elite, add 8-12s for female openweight, add a similar amount for masters or junior:

• 500m: sub 1:25 (club), sub 1:20 (county), sub 1:15 (international)
• 1k: sub 3:10 (club), sub 3:00 (county), sub 2:50 (international)
• 2k: sub 6:50 (club), sub 6:30 (university), sub 6:15 (national), sub 6:00 (elite international)
• 5k: sub 18:00 (club), sub 17:00 (university), sub 16:30 (national)
• 6k: sub 22:00 (club), sub 20:30 (university), sub 19:30 (national)
• 10k: sub 38:00 (club), sub 35:00 (university), sub 33:30 (national)

Standards published by British Rowing broadly follow this scaling for UK club rowers - the raw erg numbers don't change much club-to-club, only the field depth around each squad. UK club and university rowers typically benchmark against their squad's last BUCS or Head of the Charles entry-standard 2k test. To see exactly which percentile band your score falls into with weight and age adjustment, use the erg score calculator. To predict your 2k from a recent 5k or 6k, use the 2k prediction calculator.