The T4: Task Tree Time Totaler plugin automatically calculates and updates time estimate sums across nested task lists, saving you from manual calculations as your task hierarchies grow. By scanning your note for tasks and subtasks formatted with checkboxes and time brackets, it recursively totals up estimates for each parent, converting units and reporting sums in the most relevant scale whether minutes, hours, days, or even business weeks. The plugin handles mixed time units, overwrites existing sum fields to keep everything accurate, and supports deep nesting.