App Development Timeline Calculator
Free CalculatorEstimate how long it takes to build your app from effort hours, team size, and weekly capacity.
100% private
Runs in your browser β no numbers leave your device.
Your numbers
Total build effort in hours across all features.
Number of people working on the app in parallel.
Productive hours each person contributes weekly.
Timeline (weeks)
10
Total hours divided by weekly team capacity.
Timeline (months)
2.3
Weeks converted using 4.33 weeks per month.
How it works
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How long does it take to build an app?
App development timelines come down to simple math: the total effort a build requires divided by how much work your team can complete each week. This app development timeline calculator turns your estimated hours, team size, and weekly capacity into a realistic delivery window measured in both weeks and months.
Use it to sanity-check quotes, plan sprints, or set launch expectations before you commit. Because it runs entirely in your browser, you can iterate on scope and staffing instantly β add a developer, trim features, or adjust weekly hours and watch the timeline update in real time.