Total Float Calculator

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

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Formula

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Total Float

Formula

`"TF"_{"0"} = "LFT"-("EST"+"t"_{"activity"})`

Example

`"18d"="57d"-("19d"+"20d")`

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Total Float Solution

STEP 0: Pre-Calculation Summary

Formula Used

Total Float = Late Finish Time-(Early Start Time+Activity Time)
TF₀ = LFT-(EST+t_activity)
This formula uses 4 Variables

Variables Used

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.
Late Finish Time - (Measured in Second) - Late Finish Time is the latest point in time when the scheduled activity can finish so as not to delay the project completion date or any constraint.
Early Start Time - (Measured in Second) - Early Start Time is the earliest point in time when the scheduled activity can begin.
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

Late Finish Time: 57 Day --> 4924800 Second (Check conversion here)
Early Start Time: 19 Day --> 1641600 Second (Check conversion here)
Activity Time: 20 Day --> 1728000 Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

TF₀ = LFT-(EST+t_activity) --> 4924800-(1641600+1728000)

Evaluating ... ...

TF₀ = 1555200

STEP 3: Convert Result to Output's Unit

1555200 Second -->18 Day (Check conversion here)

FINAL ANSWER

18 Day <-- Total Float

(Calculation completed in 00.020 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

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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

Total Float Formula

Total Float = Late Finish Time-(Early Start Time+Activity Time)
TF₀ = LFT-(EST+t_activity)

What is Total float?

Total float is the period by which an activity can shift its timing without affecting the relevant schedule completion date. Total Float is the schedule ﬂexibility or amount of time that a scheduled activity can be delayed or extended without delaying the project ﬁnish date.

How to Calculate Total Float?

Total Float calculator uses Total Float = Late Finish Time-(Early Start Time+Activity Time) to calculate the Total Float, Total float is the period by which an activity can shift its timing without affecting the relevant schedule completion date. Total Float is denoted by TF₀ symbol.

How to calculate Total Float using this online calculator? To use this online calculator for Total Float, enter Late Finish Time (LFT), Early Start Time (EST) & Activity Time (t_activity) and hit the calculate button. Here is how the Total Float calculation can be explained with given input values -> 0.000208 = 4924800-(1641600+1728000).

FAQ

What is Total Float?

Total float is the period by which an activity can shift its timing without affecting the relevant schedule completion date and is represented as TF₀ = LFT-(EST+t_activity) or Total Float = Late Finish Time-(Early Start Time+Activity Time). Late Finish Time is the latest point in time when the scheduled activity can finish so as not to delay the project completion date or any constraint, Early Start Time is the earliest point in time when the scheduled activity can begin & Activity time is the estimated task duration based on preceding logic and constraints.

How to calculate Total Float?

Total float is the period by which an activity can shift its timing without affecting the relevant schedule completion date is calculated using Total Float = Late Finish Time-(Early Start Time+Activity Time). To calculate Total Float, you need Late Finish Time (LFT), Early Start Time (EST) & Activity Time (t_activity). With our tool, you need to enter the respective value for Late Finish Time, Early 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.

How many ways are there to calculate Total Float?

In this formula, Total Float uses Late Finish Time, Early Start Time & Activity Time. We can use 1 other way(s) to calculate the same, which is/are as follows -

Total Float = Late Start Time-Early Start Time

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