What the calculator uses
The questions cover training type, when soreness appeared, the affected area, intensity, the last training date and recent sleep quality.
Free DOMS recovery calculator
DOMS calculator: when soreness peaks, and when it fades.
Review recent training, soreness timing, intensity and sleep. The result is an estimate, not a prediction or diagnosis.
- Free to use
- No email needed
- About two minutes
Understand the estimate
A recovery window, not an exact countdown.
The calculator puts recent training and soreness timing into context. Individual recovery varies, so use the trend and your normal movement as the useful signals.
The limits of the estimate
The result cannot diagnose delayed-onset muscle soreness, predict an exact recovery time or clear you for another hard session.
How long does DOMS usually last?
DOMS usually shows up 12 to 24 hours after the session, peaks somewhere around 24 to 72 hours, and settles within three to five days for most people. A first session back, or anything with a lot of downhill or lowering work in it, sits at the longer end.
Why is the second day worse than the first?
Muscle damage from unaccustomed work builds over the first 48 hours before the repair process gets ahead of it. Soreness tracks that curve rather than the effort itself, so the worst day is rarely the day after.
Does soreness mean the session worked?
No. Soreness tracks how unfamiliar the work was, not how effective it was. Experienced lifters doing productive sessions often feel very little, and a first yoga class can leave someone barely able to sit down.
Should I train again while still sore?
Gentle movement usually helps and complete rest usually does not. Sharp pain in one spot, a joint that will not take weight, or anything getting worse rather than better after three or four days is a question for a GP or physiotherapist rather than a training decision.
Can I see the result without email?
Yes. Email is optional and the complete result remains available on the page.
What if the pain feels sharp or keeps worsening?
Stop using the estimate as a training guide and seek qualified advice, particularly after an injury or when symptoms are severe, persistent or worsening.
