Project Time Estimate Buffer Calculator

Pad task estimates by uncertainty or use three-point PERT with a confidence level. Get hours, working days, calendar weeks and an optional price for the buffered project.

Everything runs offline in your browser from one HTML file. No account, no tracking, no ads, nothing is uploaded. It includes a plain-language explanation and an FAQ below the tool.

Made by Inkharbor Studio, a Danish company. More from inkharbor: inkharbor.itch.io

AI disclosure: This tool was drafted with an AI model (Claude) under human direction and checked with automated calculation tests run in Node. Text and code are AI-assisted; the author reviews and is responsible for the published version. Not tax, financial or professional advice. No generative AI assets are used at runtime.

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Building a game? Godot Juice and Polish Bundle (13 tools, sale ends Oct 16).

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