# Calculator

## Definitive Estimate vs. ROM/Rough Order of Magnitude (+ Calculator)

When the cost of projects (or parts of a project) is estimated, the accuracy of these estimates depends on various factors. These include but are not limited to the availability and quality of information and the estimation technique used. The available options and data to estimate costs typically vary among the phases of a project. …

## Number of Communication Channels (+ PMP® Formula & Calculator)

The PMI methodology, set out in the Project Management Body of Knowledge, introduces the number of potential communication channels as a part of the communication requirements analysis. This type of analysis is a tool and technique of the “Plan Communications Management” process (ch. 10.1.2 in the PMBOK®, 6th edition). The goal of this analysis is …

## Discounted Payback Period: Definition, Formula, Example & Calculator

The discounted payback period (DPP) is a success measure of investments and projects. Although it is not explicitly mentioned in the Project Management Body of Knowledge (PMBOK) it has practical relevance in many projects as an enhanced version of the payback period (PBP). Read through for the definition and formula of the DPP, 2 examples …

## What Is the Rough Order of Magnitude (ROM) and How Is It Calculated?

During the project initiation phase (or when you are preparing for a project management exam) you will likely come across the term rough order of magnitude (ROM). The PMI’s Project Management Body of Knowledge refers to the rough order of magnitude as an initial estimate in the “estimate cost” process (source: PMBOK®, 6th edition, part …

## Calculator for the Rough Order of Magnitude (ROM) Range

If you are in the initiation phase of a project or studying the PMBOK for your PMP exam you will find this ROM Range Calculator useful. This tool helps you determine the minimum and maximum values of the range of your rough order of magnitude estimate. Introduction to the ROM Calculator There are numerous estimation …

## What Is Schedule Variance (SV)? Definition, Formula, Example, Calculator

When you are in the process of controlling the schedule of your project, or when you are preparing for your PMP exam, you will likely make use of the Schedule Variance (SV) at some point. This is one of the key indicators of the variance analysis which is part of the earned value management of …

## What Is Cost Variance (CV)? Definition, Formula, Example, Calculator

You probably came across the cost variance (CV) when you had been reading about earned value management and variance analysis. Whether you are controlling the cost of your project or preparing for the PMP exam – being familiar with the CV is essential to master project cost management. This article introduces the concept of cost …

## IRR Calculator: Internal Rate of Return (IRR) of Projects

The Internal Rate of Return is one of the most common success measures of projects and investments. It is a profitability metric that can be used to assess and compare different project options even if their investment amounts, timeline and cash flow characteristics differ. In project management, it is often used for cost-benefit analyses as …

## Three-Point Estimation Calculator – Triangular & PERT Beta Distribution

Three-Point estimating is a common estimation technique in projects that are applying the PMI methodology. While other estimation techniques are often deemed to be more accurate, three-point estimating supplemented with the triangular or beta (PERT) distribution is useful if the experience with or benchmarks of comparable projects are not available. Use this calculator to determine …

## Return on Investment (Single & Multi-Period ROI): Formulae, Examples, Calculator

Return on Investment is one of the most common indicators used for the cost-benefit analysis. This is probably because of its simplicity and understandability of the information conveyed. In Project Management, it is a success measure suggested by the Project Management Institute (PMI; source: PMBOK®, 6th ed., part 1, ch. 1.2.6.4, p. 34). However, the …