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

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

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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 00.004 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!

< Time Estimation Calculators

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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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