How to Calculate Training Load Ratio (ACWR)
What is Training Load Ratio (ACWR)?
The Acute:Chronic Workload Ratio (ACWR) measures recent training load vs rolling chronic load. Loading too much too fast is a primary cause of overuse injuries.
Formula
- RPE
- RPE value — Variable used in the calculation
Step-by-Step Guide
- 1Acute load = Session RPE x minutes in past 7 days
- 2Chronic load = Rolling 4-week average of weekly training load
- 3ACWR = Acute / Chronic; sweet spot: 0.8-1.3; high risk: >1.5
Worked Examples
Frequently Asked Questions
What is Training Load Ratio?
The Acute:Chronic Workload Ratio (ACWR) measures recent training load vs rolling chronic load. Loading too much too fast is a primary cause of overuse injuries
How accurate is the Training Load Ratio calculator?
The calculator uses the standard published formula for training load ratio. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.
What units does the Training Load Ratio calculator use?
This calculator works with inches, watts. You can enter values in the units shown — the calculator handles all conversions internally.
What formula does the Training Load Ratio calculator use?
The core formula is: Acute load = Session RPE x minutes in past 7 days. Each step in the calculation is shown so you can verify the result manually.
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