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Total float is the period by which an activity can shift its timing without affecting the relevant schedule completion date. Check FAQs
TF0=LFT-EFT
TF0 - Total Float?LFT - Latest Finish Time?EFT - Earliest Finish Time?

Total Float in CPM Example

With values
With units
Only example

Here is how the Total Float in CPM equation looks like with Values.

Here is how the Total Float in CPM equation looks like with Units.

Here is how the Total Float in CPM equation looks like.

24Edit=50Edit-26Edit
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Total Float in CPM Solution

Follow our step by step solution on how to calculate Total Float in CPM?

FIRST Step Consider the formula
TF0=LFT-EFT
Next Step Substitute values of Variables
∴ TF0=50d-26d
Next Step Prepare to Evaluate
∴ TF0=50-26
Next Step Evaluate
∴TF0=2073600s
LAST Step Convert to Output's Unit
∴TF0=24d

Total Float in CPM Formula Elements

Variables
Total Float
Total float is the period by which an activity can shift its timing without affecting the relevant schedule completion date.
Symbol: TF0
Measurement: TimeUnit: d
Note: Value can be positive or negative.
Formulas to find Total FloatOpen Variable
Latest Finish Time
Latest Finish Time is the latest time at which the activity can be completed without delaying the project.
Symbol: LFT
Measurement: TimeUnit: d
Note: Value can be positive or negative.
Formulas to find Latest Finish TimeOpen Variable
Earliest Finish Time
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.
Symbol: EFT
Measurement: TimeUnit: d
Note: Value should be greater than 0.
Formulas to find Earliest Finish TimeOpen Variable

Other Formulas to find Total Float

​Go Total Float given Free Float
TF0=FF0+S

Other formulas in Critical Path Method category

​Go Free Float used in CPM
FF0=TF0-S
​Go Independent Float used in CPM
IF0=FF0-S
​Go Interfering Float
IF=TF0-FF0
​Go Slack of Event in CPM
S=TF0-FF0

How to Evaluate Total Float in CPM?

Total Float in CPM evaluator uses Total Float = Latest Finish Time-Earliest Finish Time to evaluate the Total Float, The Total Float in CPM formula is defined as the time span by which the starting or finishing time can be delayed without delaying or affecting the overall project. The formula above is also valid as TF=LST-EST. Total Float is denoted by TF0 symbol.

How to evaluate Total Float in CPM using this online evaluator? To use this online evaluator for Total Float in CPM, enter Latest Finish Time (LFT) & Earliest Finish Time (EFT) and hit the calculate button.

FAQs on Total Float in CPM

What is the formula to find Total Float in CPM?
The formula of Total Float in CPM is expressed as Total Float = Latest Finish Time-Earliest Finish Time. Here is an example- 0.000278 = 4320000-2246400.
How to calculate Total Float in CPM?
With Latest Finish Time (LFT) & Earliest Finish Time (EFT) we can find Total Float in CPM using the formula - Total Float = Latest Finish Time-Earliest Finish Time.
What are the other ways to Calculate Total Float?
Here are the different ways to Calculate Total Float-
  • Total Float=Free Float+Slack of an EventOpenImg
Can the Total Float in CPM be negative?
Yes, the Total Float in CPM, measured in Time can be negative.
Which unit is used to measure Total Float in CPM?
Total Float in CPM is usually measured using the Day[d] for Time. Second[d], Millisecond[d], Microsecond[d] are the few other units in which Total Float in CPM can be measured.
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