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Project Buffer Sizing Calculator

Estimates the project completion buffer needed using critical chain principles, factoring in task uncertainty, resource contention, and feeding chains. Use it to set realistic schedule reserves before committing to a delivery date.

Critical Chain Duration (days)

Number of Critical Tasks (tasks)

Project Uncertainty Level

Number of Feeding Chains (chains)

Resource Contention Factor

Fill in the required fields to see your result.

Project Management

Project Cost Estimation Calculator

Estimates total project cost by combining labor, materials, overhead, and a contingency buffer into a single figure. Essential for proposals, budget approvals, and financial planning before a project kicks off.

Total Labor Hours (hours)

Average Hourly Rate ($/hour)

Material Costs ($)

Overhead Rate (%)

Contingency Buffer

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Key differences

	Project Buffer Sizing Calculator	Project Cost Estimation Calculator
Category	Project Management	Project Management
Inputs required	5	5
Result	Recommended Project Buffer (days)	Total Project Cost ($)
What it does	Estimates the project completion buffer needed using critical chain principles, factoring in task uncertainty, resource contention, and feeding chains. Use it to set realistic schedule reserves before committing to a delivery date.	Estimates total project cost by combining labor, materials, overhead, and a contingency buffer into a single figure. Essential for proposals, budget approvals, and financial planning before a project kicks off.