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Total Non-Productive Time Formula

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Non Productive Time is the total time wasted in setting up the machine or workpiece for a particular process. Check FAQs

NPT = N b \cdot t s

NPT - Non Productive Time?N_b - Batch Size?t_s - Setup Time?

Total Non-Productive Time Example

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With units

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Here is how the Total Non-Productive Time equation looks like with Values.

Here is how the Total Non-Productive Time equation looks like with Units.

Here is how the Total Non-Productive Time equation looks like.

108 = 2 \cdot 54

108s = 2 \cdot 54s

108 = 2 \cdot 54

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Total Non-Productive Time Solution

Follow our step by step solution on how to calculate Total Non-Productive Time?

FIRST Step Consider the formula

NPT = N b \cdot t s

Next Step Substitute values of Variables

∴

NPT = 2 \cdot 54s

Next Step Prepare to Evaluate

∴

NPT = 2 \cdot 54

LAST Step Evaluate

∴

NPT = 108s

Total Non-Productive Time Formula Elements

Variables

Non Productive Time

Non Productive Time is the total time wasted in setting up the machine or workpiece for a particular process.

Symbol: NPT

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Formulas to find Non Productive Time

Batch Size

Batch Size is the count of similar kinds of products to be manufactured.

Symbol: N_b

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Batch Size

Setup Time

Setup Time of each component is the time required to load/unload the workpiece and position the tool for production for one component.

Symbol: t_s

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Formulas to find Setup Time

Credits

Created by Kumar Siddhant

Indian Institute of Information Technology, Design and Manufacturing (IIITDM), Jabalpur

Kumar Siddhant has created this Formula and 400+ more formulas!

Verified by Parul Keshav

National Institute of Technology (NIT), Srinagar

Parul Keshav has verified this Formula and 400+ more formulas!

Other formulas in Total Production Time category

Go Size of Batch using Total Non-Productive Time

N b = \frac{NPT}{t s}

Go Load or Unload or Setup Time given Total Non-Productive Time

t s = \frac{NPT}{N b}

Go Total Machining Time or Total Machine Time

TMT = N b \cdot t m

Go Size of Batch given Total Machining Time

N b = \frac{TMT}{t m}

How to Evaluate Total Non-Productive Time?

Total Non-Productive Time evaluator uses Non Productive Time = Batch Size*Setup Time to evaluate the Non Productive Time, The Total Non-Productive Time is defined as the total time taken to loading/unloading the workpiece and repositioning the tool for the manufacturing of a unit product. Non Productive Time is denoted by NPT symbol.

How to evaluate Total Non-Productive Time using this online evaluator? To use this online evaluator for Total Non-Productive Time, enter Batch Size (N_b) & Setup Time (t_s) and hit the calculate button.

FAQs on Total Non-Productive Time

What is the formula to find Total Non-Productive Time?

The formula of Total Non-Productive Time is expressed as Non Productive Time = Batch Size*Setup Time. Here is an example- 108 = 2*54.

How to calculate Total Non-Productive Time?

With Batch Size (N_b) & Setup Time (t_s) we can find Total Non-Productive Time using the formula - Non Productive Time = Batch Size*Setup Time.

Can the Total Non-Productive Time be negative?

No, the Total Non-Productive Time, measured in Time cannot be negative.

Which unit is used to measure Total Non-Productive Time?

Total Non-Productive Time is usually measured using the Second[s] for Time. Millisecond[s], Microsecond[s], Nanosecond[s] are the few other units in which Total Non-Productive Time can be measured.

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Total Non-Productive Time Formula

Total Non-Productive Time Example

Total Non-Productive Time Solution

Total Non-Productive Time Formula Elements

Credits

Other formulas in Total Production Time category

How to Evaluate Total Non-Productive Time?

FAQs on Total Non-Productive Time

Variable Name