InfinityTool
Live tool/tool/time-study-rating-calculator

Time Study Rating Calculator

Convert observed cycle samples into normal time and standard time with performance rating and allowance factors.

ManufacturingIndustrial EngineeringAnalytics

Inputs

Turn sample cycles into standard time.

#1
#2
#3
#4
#5

Average observed time

50 sec

Normal time

55 sec

Standard time

63.25 sec

Fastest sample

48 sec

Slowest sample

52 sec

Samples

5

Study notes

Standard time applies rating and allowance on top of observed cycles.

Rating factor: 110%

Allowance factor: 15%

Use more samples if the task has visible variation or interruptions.