Work out repetitive strain risk (rula) instantly with clear inputs, formula shown and shareable results.
RULA assesses upper limb posture in two groups: arm and wrist as score A, and neck, trunk and legs as score B, each uplifted for static muscle use and applied force. The combined grand score from one to seven maps to four action levels, from acceptable to requiring immediate change.
Score groups
Score A from upper arm, forearm and wrist plus muscle and force; score B from neck, trunk and legs plus muscle and force
Action levels
1-2 acceptable, 3-4 investigate, 5-6 change soon, 7 change immediately
Preliminary estimate only. Ergonomic postural assessment should be carried out by a trained assessor using the full RULA worksheet and observation over a representative work cycle.
Score A from upper arm, forearm and wrist plus muscle and force; score B from neck, trunk and legs plus muscle and force. RULA assesses upper limb posture in two groups: arm and wrist as score A, and neck, trunk and legs as score B, each uplifted for static muscle use and applied force.
No, it is focused on the upper limbs and is best for seated work such as computer use or assembly. REBA extends the method to whole body postures including legs and load handling.
This calculator takes 4 inputs: Upper arm posture score, Wrist and forearm score, Neck, trunk and leg score, Muscle use and force score. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.