// multi-utility computation suite · offline · instant · precise
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sci.manual-handling-NIOSH-equation Calculator
Calculates the NIOSH Recommended Weight Limit (RWL) for manual lifting tasks: RWL = 23 × HM × VM × DM × AM × FM × CM, and Lifting Index = Load/RWL. LI > 1 indicates elevated musculoskeletal injury risk — at LI = 3, risk is very high; task redesign should target LI < 1.
Inputs
Load Weight Kg
Body or object weight. For health calculators, usually in kg or lbs.
H Cm
Separation between two points or total path length. Check that units are consistent throughout the calculation.
V Cm
Vertical measurement. For health calculators, typically standing height without shoes.
D Cm
Separation between two points or total path length. Check that units are consistent throughout the calculation.
A Deg
Reference formula or conversion factor shown for context.
Results
recommended weight limit RWL (kg)
The computed weight (gravitational force) or mass.
lifting index LI
A normalised score comparing the result to a reference baseline.
risk classification
Category assigned based on where the computed value falls on a defined scale. Check which standard or guideline defines these boundaries.
NIOSH RWL = LC×HM×VM×DM×AM×FM×CM
Sample size or count used in the calculation.
limiting multiplier
Gratuity amount — the suggested amount to add to the bill as a service tip.
target LI
Reference formula or conversion factor shown for context.