Gantt chart vs Kanban

"Should we use a Gantt chart or a Kanban board?" gets asked as if the two were rival brands of the same thing. They aren't. They answer different questions, and the friction teams feel usually comes from forcing one to do the other's job. A Gantt chart is a plan laid out over time. A Kanban board is a view of work as it flows through stages. Once you see them that way, the choice — and the case for using both — gets a lot clearer.

What a Gantt chart is

A Gantt chart maps tasks against a calendar. Each task is a bar whose position and length show when it happens and how long it takes, and arrows between bars show dependencies — what has to wait for what. Its whole reason for existing is to answer questions about time: when will this finish, what overlaps, and which delayed task drags the rest with it. It is fundamentally a tool for planning ahead and committing to a sequence.

What Kanban is

A Kanban board is a set of columns representing the states a piece of work passes through — classically To Do, In Progress, Done, though real boards add stages like Review or Blocked. Each task is a card, and the work of managing is moving cards rightward as they progress. Kanban came out of Toyota's manufacturing system and was adapted for knowledge work in the late 2000s. Its central ideas are visualising the flow and limiting work in progress (WIP): you cap how many cards can sit in a column at once, which forces a team to finish things before starting new ones. Kanban doesn't care much about dates. It cares about flow, throughput, and not overloading people.

A side-by-side comparison

	Gantt chart	Kanban board
Organised by	Time (a calendar axis)	State (columns of work stages)
Best question it answers	When will this be done, and in what order?	What are we working on right now, and what's stuck?
Dependencies	Shown explicitly as arrows	Largely invisible
Handles change by	Re-planning the schedule	Re-prioritising the next card
Strongest with	Fixed deadlines, known sequence	Continuous, evolving work
Effort to keep current	Higher — dates need maintaining	Lower — just move cards

What each is genuinely good at

The Gantt chart wins on foresight. If your project has a real deadline and tasks that depend on each other, nothing beats a Gantt chart for seeing the shape of the whole thing before you start. It surfaces the critical path — the chain of tasks that determines the end date — so you know where slippage actually hurts. It's also the better tool for communicating a plan to someone outside the team: a sponsor will understand a Gantt chart in seconds and would never read a board of forty cards.

Kanban wins on the present. For ongoing work where priorities shift week to week — a support queue, a content pipeline, a maintenance backlog — Kanban is far less effort and far more honest. There's no schedule to maintain and no fiction of knowing what you'll be doing in six weeks. The WIP limits do something a Gantt chart can't: they actively stop a team from starting more than it can finish, which is the single most common cause of everything being "in progress" and nothing being done.

That last point is worth a concrete picture. Imagine a four-person team with eleven things "in progress" — everyone is busy, and nothing ships, because every task is waiting on someone who is half-occupied with three others. Put a WIP limit of, say, five cards on the In Progress column and the dynamic flips: before anyone can pull a new card, an existing one has to be finished and moved on. Idle capacity gets pointed at clearing blockages rather than starting yet another job. A Gantt chart has no equivalent lever — it will happily show you eleven overlapping bars and call it a plan.

Where each one struggles

A Gantt chart struggles when the plan isn't knowable. Exploratory, research-led, or rapidly changing work makes a mockery of a detailed schedule — you spend more time re-drawing bars than doing the work, and the chart's confident dates become a liability. It also goes stale the moment people stop updating it; a plan drawn once and abandoned is decoration, not management.

Kanban struggles when time and sequence genuinely matter. A board will happily show you a column of cards with no hint that three of them must happen in a specific order, or that a hard deadline is two weeks away. Dependencies are largely invisible on a Kanban board, and "when will this be done?" is a question it answers only with statistics about past throughput, not a date you can put in a contract. For a project with a launch date and a web of prerequisites, a board alone will let you sail past trouble without seeing it coming.

Using both together

The mature pattern in many teams is to run them at different altitudes. The Gantt chart holds the plan: the phases, the milestones, the dependencies, the deadline — the map of where the project is going over the next quarter. The Kanban board runs the days: this fortnight's slice of that plan, broken into cards the team pulls through To Do, In Progress, and Done. The Gantt chart answers "are we on track for the launch?"; the board answers "what is everyone doing today?".

Concretely: a software team might keep a release plan as a Gantt chart — design, build, test, ship, with the dependencies and the ship date drawn in — while the developers work entirely off a Kanban board, never touching the chart day to day. At the weekly review, progress on the board is reflected back into the chart to check the deadline still holds. A construction project, by contrast, lives much more on the Gantt side, because the sequence is rigid and a slipped foundation genuinely cannot be re-prioritised away. A marketing team running ongoing campaigns might live almost entirely on Kanban, reaching for a Gantt chart only when a launch with a hard date appears.

So which should you use?

If you must pick one, pick by the nature of the work, not by taste. Deadline-driven, dependency-heavy, needs explaining to stakeholders — Gantt. Flowing, evolving, throughput-focused — Kanban. But treat "either/or" with suspicion. They're complementary precisely because they're different: one is the plan, the other is the doing. The teams that struggle are usually the ones using a board to manage a project with a deadline, or a Gantt chart to manage an open-ended flow. Match the tool to the question and both become a pleasure to use.

Frequently asked questions

Can you use a Gantt chart and a Kanban board at the same time?

Yes, and many teams do. The common pattern is to keep the overall plan — phases, milestones, dependencies, deadline — in a Gantt chart, and run the day-to-day work on a Kanban board. The chart answers "are we on track?"; the board answers "what are we doing now?".

Is Kanban better than a Gantt chart for Agile teams?

For continuous, flow-based work with shifting priorities, Kanban usually fits Agile teams better because there is no fixed schedule to maintain. But even Agile teams reach for a Gantt chart when there is a hard external deadline or a release plan with real dependencies to communicate.

Does a Kanban board show dependencies?

Not naturally. A board shows the state of each task but says little about which tasks must happen before others, or when. If sequence and dates matter to your project, that is exactly where a Gantt chart earns its place alongside the board.

Which is easier to keep up to date?

A Kanban board, generally — updating it just means dragging a card to the next column. A Gantt chart takes more upkeep because durations and dates need maintaining as reality shifts, which is the price of the foresight it gives you.