Some 15 years after Adamiecki, Henry Gantt, an American engineer and project management consultant, devised his own version of the chart and it was this that became widely known and popular in western countries. Consequently, it was Henry Gantt whose name was to become associated with charts of this type.
Originally Gantt charts were prepared laboriously by hand; each time a project changed it was necessary to amend or redraw the chart and this limited their usefulness, continual change being a feature of most projects. Nowadays, however, with the advent of computers and project management software, Gantt charts can be created, updated and printed easily.
Today, Gantt charts are most commonly used for tracking project schedules. For this it is useful to be able to show additional information about the various tasks or phases of the project, for example how the tasks relate to each other, how far each task has progressed, what resources are being used for each task and so on.
A Gantt chart is a type of bar chart[4][5] that illustrates a project schedule.[6] This chart lists the tasks to be performed on the vertical axis, and time intervals on the horizontal axis.[4][7] The width of the horizontal bars in the graph shows the duration of each activity.[7][8] Gantt charts illustrate the start and finish dates of the terminal elements and summary elements of a project.[1] Terminal elements and summary elements constitute the work breakdown structure of the project. Modern Gantt charts also show the dependency (i.e., precedence network) relationships between activities. Gantt charts can be used to show current schedule status using percent-complete shadings and a vertical "TODAY" line.
Gantt charts are usually created initially using an early start time approach, where each task is scheduled to start immediately when its prerequisites are complete. This method maximizes the float time available for all tasks.[4]
Widely used in project planning in the present day, Gantt charts were considered revolutionary when introduced.[10] The first known tool of this type was developed in 1896 by Karol Adamiecki, who called it a harmonogram.[11] Adamiecki, however, published his chart only in Russian and Polish which limited both its adoption and recognition of his authorship.
In 1912, Hermann Schürch [de] published what could be considered Gantt charts while discussing a construction project. Charts of the type published by Schürch appear to have been in common use in Germany at the time;[12][13][14] however, the prior development leading to Schürch's work is unclear.[15] Unlike later Gantt charts, Schürch's charts did not display interdependencies, leaving them to be inferred by the reader. These were also static representations of a planned schedule.[16]
The earliest Gantt charts were drawn on paper and therefore had to be redrawn entirely in order to adjust to schedule changes. For many years, project managers used pieces of paper or blocks for Gantt chart bars so they could be adjusted as needed.[19] Gantt's collaborator Walter Polakov introduced Gantt charts to the Soviet Union in 1929 when he was working for the Supreme Soviet of the National Economy. They were used in developing the First Five Year Plan, supplying Russian translations to explain their use.[20][21]
In the 1980s, personal computers allowed widespread creation of complex and elaborate Gantt charts. The first desktop applications were intended mainly for project managers and project schedulers. With the advent of the Internet and increased collaboration over networks at the end of the 1990s, Gantt charts became a common feature of web-based applications, including collaborative groupware.[citation needed] By 2012, almost all Gantt charts were made by software which can easily adjust to schedule changes.[19]
In a progress Gantt chart, tasks are shaded in proportion to the degree of their completion: a task that is 60% complete would be 60% shaded, starting from the left. A vertical line is drawn at the time index when the progress Gantt chart is created, and this line can then be compared with shaded tasks. If everything is on schedule, all task portions left of the line will be shaded, and all task portions right of the line will not be shaded. This provides a visual representation of how the project and its tasks are ahead or behind schedule.[22]
Linked Gantt charts contain lines indicating the dependencies between tasks. However, linked Gantt charts quickly become cluttered in all but the simplest cases. Critical path network diagrams are superior to visually communicate the relationships between tasks.[23] Nevertheless, Gantt charts are often preferred over network diagrams because Gantt charts are easily interpreted without training, whereas critical path diagrams require training to interpret.[9] Gantt chart software typically provides mechanisms to link task dependencies, although this data may or may not be visually represented.[4] Gantt charts and network diagrams are often used for the same project, both being generated from the same data by a software application.[4]
Gantt charts are used by project managers, business owners, team leaders, and executives in many different industries across various departments. Here are just a few types of companies and teams that use gantt charts to plan, schedule, and execute their projects:
So what separates gantt charts from the rest of the pack when it comes to time-sensitive or complex projects? Spreadsheets, kanban boards, and tasks lists fall short when it comes to important project management tasks, like building a timeline, outlining dependencies, and managing workloads.
In project management, gantt charts are used for planning and scheduling projects. A gantt chart is incredibly useful because it allows you to simplify complex projects into an easy-to-follow plan and track the status of tasks as work progresses.
Taking a hybrid approach to an upcoming software project? This software development plan shows you how to use a gantt chart for an Agile project. Tasks have been organized into groups based on sprints, with milestones for sprint planning and deployment.
This sample gantt chart is perfect for planning a website build or redesign. It breaks activities down into basic phases from discovery, content, and design to development, launch, and maintenance. Feel free to keep your website development plan simple or build it out to cover all your project bases.
Want to get one step closer to lights, camera, action? We designed this video production schedule to help you hit your release dates right on time. In this gantt chart example, tasks are organized and color-coded by the 3 phases of a media project: pre-production, production, and post-production.
Writing your first marketing plan can feel daunting. This digital marketing plan makes it easy to outline key strategies for meeting your objectives. Use this gantt chart to track goal progress and keep your team and stakeholders informed. In this example, we grouped quarterly initiatives by project type.
Construction project managers rely on gantt charts to manage moving parts across large projects. In this sample construction schedule, each phase of the construction process has been broken down into its own group of tasks. Important contract sign-off and inspections are represented by milestones.
These questions can help you gather all the right details so you can sketch out a project plan before you sit down to create your gantt chart. Get a more detailed look at how to write a good project plan.
Adding milestones to your gantt chart makes it easy to track project deadlines, approvals, meetings, and other key deliverables or events. In TeamGantt, a milestone appears as a yellow diamond on your gantt chart.
If you deliver a plan that has a mistake, misinterprets a task, or even misses a date, it can create confusion and delays. So grab a teammate and ask them to review your gantt chart before you post it for review.
If your team uses multiple apps to collaborate on projects, why not integrate them with your gantt chart so everything connects back to the plan? Here are a few popular integrations you can use to keep your people and projects in sync:
One of the best things about using a gantt chart is the ability to see where a project stands at any given moment. After all, clients, bosses and other project stakeholders expect you to stick to your promises (aka: budgets and deadlines).
So what separates gantt charts from the rest of the pack when it comes to time-sensitive or complex projects? Spreadsheets, kanban boards, and task lists fall short when it comes to important project management tasks, like building a timeline, outlining dependencies, and managing workloads.
A project plan is one thing. How it plays out is another. A gantt chart gives you a start-to-finish view of your entire project timeline so you can see how tasks are progressing in real time. That means you can provide up-to-the-minute status reports to managers and stakeholders in a flash.
Gantt charts help visualize various tasks and projects that occur simultaneously within an organization, and how far along they have progressed. They are used by management to plan and schedule such projects so that resources can be allocated in an optimal way and that projects that are prioritized can finish before less important ones begin."}},"@type": "Question","name": "Who Was Henry Gantt?","acceptedAnswer": "@type": "Answer","text": "Henry Gantt was a social scientist and management consultant who also held a degree in mechanical engineering. He worked in the field of scientific management, developing methods to streamline and increase the productivity of corporations and their workforce. He created the Gantt chart in the 1910s to help supervisors understand the progress of their labor force and to ensure tasks were on schedule.","@type": "Question","name": "What Are the Components of a Gantt Chart?","acceptedAnswer": "@type": "Answer","text": "A Gantt chart can vary in complexity and depth, but will always have three key components: activities or tasks that are to be done, running along the y-axis; milestones or progress stages indicated along the x-axis (either on the top or bottom of the chart); and progress bars, denoted as horizontal bars, denoting how far along each task is at any given point."]}]}] Investing Stocks Bonds ETFs Options and Derivatives Commodities Trading FinTech and Automated Investing Brokers Fundamental Analysis Technical Analysis Markets View All Simulator Login / Portfolio Trade Research My Games Leaderboard Banking Savings Accounts Certificates of Deposit (CDs) Money Market Accounts Checking Accounts View All Personal Finance Budgeting and Saving Personal Loans Insurance Mortgages Credit and Debt Student Loans Taxes Credit Cards Financial Literacy Retirement View All News Markets Companies Earnings CD Rates Mortgage Rates Economy Government Crypto ETFs Personal Finance View All Reviews Best Online Brokers Best Savings Rates Best CD Rates Best Life Insurance Best Personal Loans Best Mortgage Rates Best Money Market Accounts Best Auto Loan Rates Best Credit Repair Companies Best Credit Cards View All Academy Investing for Beginners Trading for Beginners Become a Day Trader Technical Analysis All Investing Courses All Trading Courses View All TradeSearchSearchPlease fill out this field.SearchSearchPlease fill out this field.InvestingInvesting Stocks Bonds ETFs Options and Derivatives Commodities Trading FinTech and Automated Investing Brokers Fundamental Analysis Technical Analysis Markets View All SimulatorSimulator Login / Portfolio Trade Research My Games Leaderboard BankingBanking Savings Accounts Certificates of Deposit (CDs) Money Market Accounts Checking Accounts View All Personal FinancePersonal Finance Budgeting and Saving Personal Loans Insurance Mortgages Credit and Debt Student Loans Taxes Credit Cards Financial Literacy Retirement View All NewsNews Markets Companies Earnings CD Rates Mortgage Rates Economy Government Crypto ETFs Personal Finance View All ReviewsReviews Best Online Brokers Best Savings Rates Best CD Rates Best Life Insurance Best Personal Loans Best Mortgage Rates Best Money Market Accounts Best Auto Loan Rates Best Credit Repair Companies Best Credit Cards View All AcademyAcademy Investing for Beginners Trading for Beginners Become a Day Trader Technical Analysis All Investing Courses All Trading Courses View All EconomyEconomy Government and Policy Monetary Policy Fiscal Policy Economics View All Financial Terms Newsletter About Us Follow Us Table of ContentsExpandTable of ContentsWhat Is a Gantt Chart?Understanding Gantt ChartsBenefitsExampleGantt Charts FAQsThe Bottom LineBusinessBusiness EssentialsGantt Charting: Definition, Benefits, and How They're UsedByMitchell GrantFull Bio Mitchell Grant is a self-taught investor with over 5 years of experience as a financial trader. He is a financial content strategist and creative content editor.Learn about our editorial policiesUpdated December 21, 2023Reviewed byKhadija Khartit Reviewed byKhadija KhartitFull Bio Khadija Khartit is a strategy, investment, and funding expert, and an educator of fintech and strategic finance in top universities. She has been an investor, entrepreneur, and advisor for more than 25 years. She is a FINRA Series 7, 63, and 66 license holder.Learn about our Financial Review BoardFact checked byMelody Kazel Investopedia / Theresa Chiechi
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