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Calcimator

Recovery Protocol (Combat) Calculator

Post-fight recovery timeline and treatment plan.

About this calculator

This calculator projects a recovery timeline across the four phases fighters actually move through after a bout: immediate rehydration, acute rest, sub-acute return to light training, and full clearance to compete again. It starts from a base recovery period set by event type — 2 days for a training/sparring session, 7 for an amateur fight, 14 for a pro decision, up to 30 days for a pro fight ended by KO/TKO — then compounds it with an age factor (recovery is modeled as 2% slower per year of age above 25), a damage multiplier that scales with your self-rated damage severity (1-10), and a rounds-fought factor that adds roughly 5% more recovery time per round beyond three. Dehydration from making weight is treated as its own additive delay: each kilogram of water cut adds about half a day to full recovery, and rehydration time is estimated separately as 12 hours plus 3 hours per kilogram cut, since severe cuts genuinely do take longer to reverse than the old "you'll be fine by weigh-in plus one meal" assumption.

Two numbers are floors rather than additions: any mandatory rest tied to a specific injury (0 days for none, up to 45 for concussion symptoms) and typical athletic-commission medical suspensions (up to 60 days for a fight ended by KO/TKO) can each push the total recovery timeline out further than the damage-based calculation alone would suggest, and the calculator takes whichever number is largest. Recommended daily protein (up to 2.5 g/kg for severe damage) and nightly sleep targets (up to 10 hours) round out the practical guidance. This is a planning estimate, not medical clearance — concussion symptoms and actual commission suspension periods always require a licensed physician's sign-off regardless of what any calculator outputs.

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Step 1 of 3

How to Use This Calculator
  1. Enter the athlete's age, event type (training/sparring, amateur fight, pro decision, or pro KO/TKO received), and rounds fought.
  2. Enter damage severity (1-10), water cut in kilograms, and normal (non-cutting) body weight in kilograms.
  3. Select the most significant injury sustained, if any: none, minor bruising, hand/foot injury, or concussion symptoms.
  4. Review the total recovery days, along with the rehydration, acute rest, light training return, sparring return, and competition return timelines.
  5. Check the commission suspension days, dehydration percentage, recommended daily protein, and nightly sleep target.

What each input means

Age
Athlete's age (recovery slows with age).
Event Type
Type of combat event completed.
Rounds fought
Number of rounds completed.
Damage severity (1-10)
1 = minimal, 5 = moderate bruising/swelling, 10 = severe damage.
Water cut (kg)
Kilograms of water weight cut before weigh-in.
Body weight (kg)
Normal (non-cutting) body weight.
Injury Type
Most significant injury sustained.

What each result means

Total recovery (days)
Estimated total days until full recovery and competition readiness.
Rehydration phase (hours)
Hours needed for proper rehydration post-weigh-in.
Acute rest phase (days)
Days of complete rest recommended.
Light training return (day)
Day when light, non-contact training can resume.
Sparring return (day)
Earliest day to resume contact sparring.
Competition return (day)
Earliest day to accept another fight.
Commission suspension (days)
Typical mandatory medical suspension by athletic commission.
Dehydration level %
Water cut as percentage of body weight.
Recovery protein (g/day)
Recommended daily protein intake during recovery.
Sleep target (hrs/night)
Recommended sleep per night during recovery.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Age = 28, Event Type = 2, Rounds fought = 3, Damage severity (1-10) = 4 = 7 input(s) provided
  2. Calculate Total recovery
    Total recovery
    30 = 30
  3. Calculate Rehydration phase
    Rehydration phase
    21 = 21
  4. Calculate Acute rest phase
    Acute rest phase
    8 = 8

Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.

Frequently Asked Questions

Why is my total recovery time longer than the sum of the acute and sub-acute phases?

Total recovery days is calculated as its own formula — baseDays × damageMultiplier × roundFactor × ageRecoveryFactor plus dehydration days — rather than as the sum of the acute and sub-acute phase outputs, which use their own partial multipliers (0.3 and 0.5 of base days respectively). The total is then floored against both mandatory injury rest and commission suspension days, so it's the largest of three separately-computed numbers, not a simple addition of the phases shown above it.

Why did a hand injury push my competition return date out further than the damage severity alone suggested?

Injury type carries its own mandatory rest floor — 0 days for none, 3 for minor bruising, 14 for a hand/foot injury, 45 for concussion symptoms — and the calculator takes the maximum of the damage-based total, this mandatory injury rest, and any commission suspension. So even a fight with moderate self-rated damage severity will get pushed to at least 14 days of recovery if you selected a hand/foot injury, regardless of what the damage multiplier alone would compute.

How much does age actually affect the recovery timeline?

The age recovery factor only kicks in above 25: it stays at 1.0 up to that age, then adds 2% per year above it, so a 35-year-old fighter gets a 1.2× multiplier (10 years × 2%) applied to every damage-and-rounds-based recovery number, while a 22-year-old gets no adjustment at all. This multiplier compounds with damage severity and rounds fought, so the age effect is more pronounced after a harder fight than after light sparring.

Why does cutting more water weight extend recovery by a flat amount regardless of my body size?

Dehydration days is calculated purely as waterCutKg × 0.5, added directly to the acute and total recovery calculations — it doesn't scale by your body weight, only by the absolute kilograms cut. The dehydration percentage output (water cut as a share of body weight) is reported separately for context, but it doesn't feed back into how many extra recovery days the calculator adds; only the raw kilogram figure does.

Does a bigger commission suspension mean the calculator ignores my actual damage level?

No — commission suspension (up to 60 days for a KO/TKO loss) and the damage-based total recovery calculation are computed independently, and the calculator reports whichever is larger as your competition return timeline. If your damage severity and rounds fought would only project a shorter recovery, the mandatory commission suspension still applies as a floor, since athletic commissions impose these regardless of how the fighter feels afterward.

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