Project Time Calculator

Add a project's tasks with their estimated hours, optionally apply a contingency percentage, and enter your productive hours per day and work days per week, to get the total effort and its estimated duration in work days and weeks. This is an EFFORT and WORK DURATION estimate, never money (that's what the Project Budget Calculator is for) or already-worked hours (that's what the Worked Hours Calculator is for). It models no calendar, holidays, dependencies, blockers, or multiple people working in parallel, so it never promises a real delivery date.

Processed on your device, no AI

Tasks

Add at least one task with estimated hours to calculate the duration.

This tool estimates EFFORT and WORK DURATION, never money or a real delivery date: it models no calendar, holidays, dependencies, blockers, real availability, or multiple people working in parallel. Hours/day and days/week are editable convenience defaults, not a universal standard.

The data is processed on your device and is never sent to the server.

Use cases

How to use this tool

  1. Add one or more tasks with their estimated hours
  2. Enter an optional contingency and your work hours/days
  3. Check the total effort and the estimated duration in days and weeks

Frequently asked questions

Does it calculate the project's cost?
No. This tool never models money; to estimate a project's planned cost, use the Project Budget Calculator.
Does it give me a real delivery date?
No. It only estimates effort and work duration; it models no calendar, holidays, dependencies, blockers, or real availability, so it never promises a real delivery date.

Related tools

← Back to home