Earliest Finish Time Calculator

✖Latest Finish Time is the latest time at which the activity can be completed without delaying the project.ⓘ Latest Finish Time [LFT]			+10% -10%
✖Total float is the period by which an activity can shift its timing without affecting the relevant schedule completion date.ⓘ Total Float [TF₀]			+10% -10%

✖Earliest Finish Time is the time of an activity that occurs if the activity starts at the earliest start time and takes an estimated time t to complete the activity.ⓘ Earliest Finish Time [EFT]

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Formula

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Earliest Finish Time

Formula

`"EFT" = "LFT"-"TF"_{"0"}`

Example

`"26d"="50d"-"24d"`

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Earliest Finish Time Solution

STEP 0: Pre-Calculation Summary

Formula Used

Earliest Finish Time = Latest Finish Time-Total Float
EFT = LFT-TF₀
This formula uses 3 Variables

Variables Used

Earliest Finish Time - (Measured in Second) - Earliest Finish Time is the time of an activity that occurs if the activity starts at the earliest start time and takes an estimated time t to complete the activity.
Latest Finish Time - (Measured in Second) - Latest Finish Time is the latest time at which the activity can be completed without delaying the project.
Total Float - (Measured in Second) - Total float is the period by which an activity can shift its timing without affecting the relevant schedule completion date.

STEP 1: Convert Input(s) to Base Unit

Latest Finish Time: 50 Day --> 4320000 Second (Check conversion here)
Total Float: 24 Day --> 2073600 Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

EFT = LFT-TF₀ --> 4320000-2073600

Evaluating ... ...

EFT = 2246400

STEP 3: Convert Result to Output's Unit

2246400 Second -->26 Day (Check conversion here)

FINAL ANSWER

26 Day <-- Earliest Finish Time

(Calculation completed in 00.004 seconds)

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Credits

Created by Rachana B V

The National Institute of Engineering (NIE), Mysuru

Rachana B V has created this Calculator and 25+ more calculators!

Verified by Ayush Singh

Gautam Buddha University (GBU), Greater Noida

Ayush Singh has verified this Calculator and 100+ more calculators!

< 10+ Critical Path Method Calculators

Earliest Finish Time

Go Earliest Finish Time = Latest Finish Time-Total Float

Total Float in CPM

Go Total Float = Latest Finish Time-Earliest Finish Time

Latest Finish Time

Go Latest Finish Time = Total Float+Earliest Finish Time

Slack of Event given Independent Float

Go Slack of an Event = Free Float-Independent Float

Free Float given Indenpendent Float

Go Free Float = Independent Float+Slack of an Event

Independent Float used in CPM

Go Independent Float = Free Float-Slack of an Event

Total Float given Free Float

Go Total Float = Free Float+Slack of an Event

Free Float used in CPM

Go Free Float = Total Float-Slack of an Event

Slack of Event in CPM

Go Slack of an Event = Total Float-Free Float

Interfering Float

Go Interfering Float = Total Float-Free Float

Earliest Finish Time Formula

Earliest Finish Time = Latest Finish Time-Total Float
EFT = LFT-TF₀

What is Float?

Float, sometimes called slack, is the amount of time an activity, network path, or project can be delayed from the early start without changing the completion date of the project.

What is Slack?

The Slack time for an activity is the time between its earliest and latest start time or between its earliest and latest finish time. Slack is the amount of time that an activity can be delayed past its earliest start or earliest finish without delaying the project.

How to Calculate Earliest Finish Time?

Earliest Finish Time calculator uses Earliest Finish Time = Latest Finish Time-Total Float to calculate the Earliest Finish Time, The Earliest Finish Time formula is defined as the earliest possible time a task or activity can be completed, considering its dependencies and constraints. Earliest Finish Time is denoted by EFT symbol.

How to calculate Earliest Finish Time using this online calculator? To use this online calculator for Earliest Finish Time, enter Latest Finish Time (LFT) & Total Float (TF₀) and hit the calculate button. Here is how the Earliest Finish Time calculation can be explained with given input values -> 0.000301 = 4320000-2073600.

FAQ

What is Earliest Finish Time?

The Earliest Finish Time formula is defined as the earliest possible time a task or activity can be completed, considering its dependencies and constraints and is represented as EFT = LFT-TF₀ or Earliest Finish Time = Latest Finish Time-Total Float. Latest Finish Time is the latest time at which the activity can be completed without delaying the project & Total float is the period by which an activity can shift its timing without affecting the relevant schedule completion date.

How to calculate Earliest Finish Time?

The Earliest Finish Time formula is defined as the earliest possible time a task or activity can be completed, considering its dependencies and constraints is calculated using Earliest Finish Time = Latest Finish Time-Total Float. To calculate Earliest Finish Time, you need Latest Finish Time (LFT) & Total Float (TF₀). With our tool, you need to enter the respective value for Latest Finish Time & Total Float 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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