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

`"3d"="46d"-"23d"-"20d"`

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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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< 16 Time Estimation Calculators

Expected Waiting Time for Customers in Queue

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

Standard Normal Variation

Go Standard Normal Variation = (Normal Variate-Expected Value)/Standard Deviation

PERT Expected Time

Go PERT Expected Time = (Optimistic Time+4*Most Likely Time+Pessimistic Time)/6

Time Taken for Manufacturing Model with Shortage

Go Time taken for Manufacturing Model with Shortage = EOQ Manufacturing Model with Shortage/Demand per Year

Independent Float

Go Independent Float = Early Finish Time-Late Start Time-Activity Time

Total Float

Go Total Float = Late Finish Time-(Early Start Time+Activity Time)

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)

Time Taken for Purchase Model with No Shortage

Go Time taken for Purchase Model no Shortage = Economic Order Quantity/Demand per Year

Time Taken for Purchase Model with Shortage

Go Time taken for Purchase Model with Shortage = EOQ Purchase Model/Demand per Year

Total Float given Finish Time

Go Total Float given Finish Times = Late Finish Time-Early Finish Time

Standard Deviation given Optimistic and Pessimistic Time

Go Standard Deviation = (Pessimistic Time-Optimistic Time)/6

Independent Float given Slack

Go Independent Float given Slack = Free Float-Slack of Event

Late Finish Time

Go Late Finish Time = Late Start Time+Duration of Activity

Early Finish Time

Go Early Finish Time = Early Start Time+Safety Stock

Total Float given Start Time

Go Total Float = Late Start Time-Early Start Time

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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