Unit Per Hour (UPH)

Unit per hour is a measure of capacity of manufacturing or assembly line in a factory. Unit per hour is abbreviated a UPH. UPH means, how many units a manufacturing line or assembly can be produced in an hour.

Let’s discuss this in detail. We will include following in this article.

• What is UPH
• Uses of UPH
• How to calculate UPH
• Demonstration of UPH through an example.
• UPH calculation tool (For premium subscribers)
• Calculation of Manpower using UPH.

You may refer a demonstration of our UPH tool from YouTube video end of this article. UPH tool is available at the end of this article. Please note it will be available only for our premium subscribers.

Ok… Lets continue with our topic and learn more about UPH.

What is UPH

As we stated before, Unit per hour is a measure of capacity of manufacturing or assembly line in a factory. UPH means, how many units a manufacturing line or assembly can be produced in an hour.

Uses of UPH

Following are the uses of UPH

• UPH clearly communicates how much a assembly can produce in an hour, shift, day, month or year. Since we can know the UPH per hour, we can easily calculate the capacity for shift, day, month or year by multiplying the UPH with available hours. We will explain this is example section below.
• UPH can be used to compare actual production with the capacity.
• UPH can be used to know the trends of productivity for a particular time period. (There will be a graph in our UPH tool to monitor the trend.)
• UPH can be used for calculating or defining manpower requirement.

We will explain these through an example below.

How to calculate UPH

UPH is calculated from Standard time. If you don’t know how to arrive standard time, refer our article on Direct stopwatch time study.

Ok… Suppose you have the standard time of all operation of an assembly line.

Now pick out the largest standard time of all operation. Now this will be the bottleneck operation. If you want to know more about our bottleneck operation, refer the article.

Now, you have the bottleneck standard time in minutes.

Divide 60 minutes by this bottleneck standard time in minutes, then you will get the UPH.

Demonstration of UPH with an Example

As explained above suppose your bottleneck standard time is 2 minutes.

Now, divide 60 minutes (Total minutes in an hour) by 2 minutes.

Then you will get 30.

Here 30 is the UPH of your assembly line.

That means your assembly line can produce 30 units per hour and its the capacity of your line. Make sure you consider sufficient efficiency factor to get practical results. Like, if the efficiency of your line is 85%, multiply 85% with 30. Then you will get 25. Then, this will be more practical data since no line can run at 100% efficiency. We recommend to consider efficiency in your calculation.

Ok as of now we will take 30 as UPH.

Now you know UPH. Then what is the capacity per shift?

Suppose now as of now working hours in your factory per shift is 7 hours, capacity per shift is UPH x 7, which is 30 x 7 = 210 nos.

Here capacity of your assembly line per shift is 210 nos.

Suppose you run 3 shifts per day, capacity per day is 210 x 3 = 630 nos

Now your factory works 6 days a week, weekly capacity is 630 x 6 = 3780 nos.

Hope you got an idea about unit per hour (UPH).

Calculation of Manpower using UPH

As in our previous example of UPH 30, the manpower required is 10 nos. Or in other words, the crew required in your production line for getting a UPH of 30 is 10.

This 10 is the standard crew. (Please refer the calculation we have done to arrive UPH).

With this data we can calculate manpower required for the forecast.

For example, the forecast for the upcoming month for the production line is 10000.

Now you need to calculate how many lines required.

For that calculate capacity per day. In our previous example, UPH is 30 and working hours per shift is 7 hours and consider 3 shift per day. Now the capacity of the production line per day is 30 x 7 x 3 = 630 nos.

Now to calculate no of line required, per day forecast divided by capacity per day.

Per day requirement is 10000 divided by 25. 25 is the no of working days per month.

Which is, 400.

To calculate the no of lines, 400/630, which is 0.63 lines.

Now we know the standard crew size is 10.

Now to fulfill to meet the above forecast the manpower required per shift is 0.63 x 10 = 6.3 Manpower per Shift, we can round up and say 7 Manpower.

Now manpower required per day is 7 x 3 = 21.

In conclusion we required 21 manpower per day to meet the demand for next month.

Don’t worry about these calculation, our below online tool for UPH will do everything for you. You only need to enter the data. Watch the video below on how this works.

Online UPH calculation Tool

This online UPH Tool can be used for below purposes.

• Calculate UPH of a Assembly line
• Calculate manpower required for a particular demand from UPH
• Monitor the trend of UPH
• You can also print the report, and save by yourself.

For demonstration please watch the video at the start of the article.

You can download a sample UPH report which is generated from this tool, from below.

If you need any further assistance contact us on WhatsApp.

Ok… That’s it all about UPH from our side.

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