Independent Float Calculator

✖Early Finish Time is the earliest point in time when the scheduled activity can complete.ⓘ Early Finish Time [EFT]			+10% -10%
✖Late Start Time is the latest point in time when the scheduled activity can begin so as not to delay the project completion date or any constraint.ⓘ Late Start Time [LST]			+10% -10%
✖Activity time is the estimated task duration based on preceding logic and constraints.ⓘ Activity Time [t_activity]			+10% -10%

✖Independent Float is that portion of the total float within which an activity can be delayed to start without affecting the float of the preceding activities.ⓘ Independent Float [IF₀]

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Formula

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Independent Float

Formula

IF 0 = EFT - LST - t activity

Example

3 d = 46 d - 23 d - 20 d

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Independent Float Solution

STEP 0: Pre-Calculation Summary

Formula Used

Independent Float = Early Finish Time-Late Start Time-Activity Time
IF₀ = EFT-LST-t_activity
This formula uses 4 Variables

Variables Used

Independent Float - (Measured in Second) - Independent Float is that portion of the total float within which an activity can be delayed to start without affecting the float of the preceding activities.
Early Finish Time - (Measured in Second) - Early Finish Time is the earliest point in time when the scheduled activity can complete.
Late Start Time - (Measured in Second) - Late Start Time is the latest point in time when the scheduled activity can begin so as not to delay the project completion date or any constraint.
Activity Time - (Measured in Second) - Activity time is the estimated task duration based on preceding logic and constraints.

STEP 1: Convert Input(s) to Base Unit

Early Finish Time: 46 Day --> 3974400 Second (Check conversion here)
Late Start Time: 23 Day --> 1987200 Second (Check conversion here)
Activity Time: 20 Day --> 1728000 Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

IF₀ = EFT-LST-t_activity --> 3974400-1987200-1728000

Evaluating ... ...

IF₀ = 259200

STEP 3: Convert Result to Output's Unit

259200 Second -->3 Day (Check conversion here)

FINAL ANSWER

3 Day <-- Independent Float

(Calculation completed in 00.004 seconds)

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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

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< Time Estimation Calculators

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Free Float

Go Free Float = Early Finish Time-Early Start Time-Activity Time

Expected Waiting Time for Customers in System

Go Expected Waiting Time for Customers in System = 1/(Mean Service Rate-Mean Arrival Rate)

Early Finish Time

Go Early Finish Time = Early Start Time+Safety Stock

Independent Float Formula

Independent Float = Early Finish Time-Late Start Time-Activity Time
IF₀ = EFT-LST-t_activity

What is Independent float?

Independent float is that portion of the total float within which an activity can be delayed for start without affecting the float of the preceding activities. Independent float is that portion of the total float within which an activity can be delayed for start without affecting the float of the preceding activities. It is computed for activity by subtracting the tail event slack from its total float.

How to Calculate Independent Float?

Independent Float calculator uses Independent Float = Early Finish Time-Late Start Time-Activity Time to calculate the Independent Float, Independent float is that portion of the total float within which an activity can be delayed for start without affecting the float of the preceding activities. Independent Float is denoted by IF₀ symbol.

How to calculate Independent Float using this online calculator? To use this online calculator for Independent Float, enter Early Finish Time (EFT), Late Start Time (LST) & Activity Time (t_activity) and hit the calculate button. Here is how the Independent Float calculation can be explained with given input values -> 3.5E-5 = 3974400-1987200-1728000.

FAQ

What is Independent Float?

Independent float is that portion of the total float within which an activity can be delayed for start without affecting the float of the preceding activities and is represented as IF₀ = EFT-LST-t_activity or Independent Float = Early Finish Time-Late Start Time-Activity Time. Early Finish Time is the earliest point in time when the scheduled activity can complete, Late Start Time is the latest point in time when the scheduled activity can begin so as not to delay the project completion date or any constraint & Activity time is the estimated task duration based on preceding logic and constraints.

How to calculate Independent Float?

Independent float is that portion of the total float within which an activity can be delayed for start without affecting the float of the preceding activities is calculated using Independent Float = Early Finish Time-Late Start Time-Activity Time. To calculate Independent Float, you need Early Finish Time (EFT), Late Start Time (LST) & Activity Time (t_activity). With our tool, you need to enter the respective value for Early Finish Time, Late Start Time & Activity 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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