PERT Expected Time Calculator

✖Optimistic Time is the shortest possible time to complete the activity if all goes well.ⓘ Optimistic Time [T_optimistic]			+10% -10%
✖Most Likely Time is the normal time activity would take.ⓘ Most Likely Time [t_m]			+10% -10%
✖A pessimistic Time is the longest time that an activity could take if everything is wrong.ⓘ Pessimistic Time [T_Pessimistic]			+10% -10%

✖PERT Expected Time is a method of calculating project completion times both for your own scheduling and for your customers' needs.ⓘ PERT Expected Time [t_e]

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PERT Expected Time Solution

STEP 0: Pre-Calculation Summary

Formula Used

PERT Expected Time = (Optimistic Time+4*Most Likely Time+Pessimistic Time)/6
t_e = (T_optimistic+4*t_m+T_Pessimistic)/6
This formula uses 4 Variables

Variables Used

PERT Expected Time - (Measured in Second) - PERT Expected Time is a method of calculating project completion times both for your own scheduling and for your customers' needs.
Optimistic Time - (Measured in Second) - Optimistic Time is the shortest possible time to complete the activity if all goes well.
Most Likely Time - (Measured in Second) - Most Likely Time is the normal time activity would take.
Pessimistic Time - (Measured in Second) - A pessimistic Time is the longest time that an activity could take if everything is wrong.

STEP 1: Convert Input(s) to Base Unit

Optimistic Time: 9 Day --> 777600 Second (Check conversion here)
Most Likely Time: 3 Day --> 259200 Second (Check conversion here)
Pessimistic Time: 10 Day --> 864000 Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

t_e = (T_optimistic+4*t_m+T_Pessimistic)/6 --> (777600+4*259200+864000)/6

Evaluating ... ...

t_e = 446400

STEP 3: Convert Result to Output's Unit

446400 Second -->5.16666666666667 Day (Check conversion here)

FINAL ANSWER

5.16666666666667 ≈ 5.166667 Day <-- PERT Expected Time

(Calculation completed in 00.004 seconds)

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Credits

Created by Suman Ray Pramanik

Indian Institute of Technology (IIT), Kanpur

Suman Ray Pramanik has created this Calculator and 50+ more calculators!

Verified by Akshada Kulkarni

National Institute of Information Technology (NIIT), Neemrana

Akshada Kulkarni has verified this Calculator and 900+ more calculators!

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PERT Expected Time Formula

LaTeX Go

PERT Expected Time = (Optimistic Time+4*Most Likely Time+Pessimistic Time)/6
t_e = (T_optimistic+4*t_m+T_Pessimistic)/6

What is PERT?

PERT stands for the program evaluation and review technique, which is a method of calculating project completion times both for your own scheduling and for your customers' needs. The PERT calculation takes into consideration the shortest, longest, and most likely amount of time you think it will take to complete a project in order to help you plan your time in the most accurate way possible.

How to Calculate PERT Expected Time?

PERT Expected Time calculator uses PERT Expected Time = (Optimistic Time+4*Most Likely Time+Pessimistic Time)/6 to calculate the PERT Expected Time, PERT expected time is a method of calculating project completion times both for your own scheduling and for your customers' needs. PERT Expected Time is denoted by t_e symbol.

How to calculate PERT Expected Time using this online calculator? To use this online calculator for PERT Expected Time, enter Optimistic Time (T_optimistic), Most Likely Time (t_m) & Pessimistic Time (T_Pessimistic) and hit the calculate button. Here is how the PERT Expected Time calculation can be explained with given input values -> 6E-5 = (777600+4*259200+864000)/6.

FAQ

What is PERT Expected Time?

PERT expected time is a method of calculating project completion times both for your own scheduling and for your customers' needs and is represented as t_e = (T_optimistic+4*t_m+T_Pessimistic)/6 or PERT Expected Time = (Optimistic Time+4*Most Likely Time+Pessimistic Time)/6. Optimistic Time is the shortest possible time to complete the activity if all goes well, Most Likely Time is the normal time activity would take & A pessimistic Time is the longest time that an activity could take if everything is wrong.

How to calculate PERT Expected Time?

PERT expected time is a method of calculating project completion times both for your own scheduling and for your customers' needs is calculated using PERT Expected Time = (Optimistic Time+4*Most Likely Time+Pessimistic Time)/6. To calculate PERT Expected Time, you need Optimistic Time (T_optimistic), Most Likely Time (t_m) & Pessimistic Time (T_Pessimistic). With our tool, you need to enter the respective value for Optimistic Time, Most Likely Time & Pessimistic Time and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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