What is the Pareto Diagram?
The Pareto Principle — also called the 80/20 rule — was observed by economist Vilfredo Pareto in 1896 when he noted that 80% of Italy's land was owned by 20% of the population. Since then, the same distribution has been found in business, software, and personal productivity: roughly 20% of your efforts account for 80% of your meaningful results.
A Pareto Diagram visualizes this distribution as a bar chart sorted from highest to lowest contribution. In task management, it shows which categories of work are generating the most completed tasks — and which areas of your life are getting most of your productive energy.
The diagram turns a question you can only vaguely sense — "Am I spending my time on the right things?" — into something you can actually see and act on.
How can it help you be more productive?
- Spot your high-impact workSee which categories account for the most completions and ask whether those are also the most important — or just the easiest.
- Identify neglected areasCategories that appear rarely reveal where you've been putting off work you probably know matters.
- Weekly review in secondsA glance at the diagram gives you a week-in-review without journaling or manual logging — the data is already there.
- Sharpen future prioritiesWhen Health has zero completions for the third week in a row, you have a concrete reason to plan differently next week.
How it works in TaskSolver
The Pareto Diagram is generated automatically from your completed tasks. TaskSolver groups your completions by category for the current week and plots them as a bar chart, sorted from the category with the most completed tasks to the least. You don't have to log anything — it's built entirely from data you already created.
Below the bars, a cumulative line shows what percentage of your total completions the top categories account for. If Work and Health together reach 80% of the line, those two categories are your 80/20 this week.
You can switch between weekly and all-time views. The weekly view is useful for current reflection; the all-time view reveals the longer-term patterns in how you allocate your productive energy. Both views update in real time as you complete or reopen tasks.