Loading page
About this tool
Estimate project cost and delivery timeline from task hours, hourly rate and a risk buffer.
Project Estimate Calculator turns a task list into a quote and a delivery date. Enter the hours you expect each piece of work to take, set your hourly rate and a contingency buffer, and it returns the cost before and after the buffer, the total hours, and a finish date based on the hours you can actually give the project each week. Built for freelancers, agencies and studios who need a defensible number rather than a gut-feel figure.
Open Project Estimate Calculator on AltFTool — it loads instantly in your browser.
Enter the values you already know.
Fine-tune the options to match your scenario.
Read the result and use it in your planning or reporting.
Every task shows its hours, share of the project and cost, so a quote can be defended line by line.
Contingency is calculated as its own hours and rupee figure instead of being hidden inside padded estimates.
The timeline uses weekdays and your real weekly capacity, not an imaginary 40-hour week on one project.
Common practice is 15 to 25 percent for familiar work and 30 to 50 percent when requirements are vague or the technology is new. The buffer covers rework and unknowns, not scope the client adds later.
Estimate in hours either way. A fixed price is simply your buffered hours times your rate, agreed up front, which shifts the risk of overrun to you — so a clear scope and a healthy buffer matter more.
Because almost nobody bills 40 hours a week to one project. Enter the hours you can genuinely dedicate — often 20 to 30 — and the timeline stretches accordingly, which is why deadlines slip.
Break it into subtasks small enough to picture finishing in a day or less, estimate each, then add them up. Smaller pieces are far more accurate than one large guess, and unfamiliar work deserves a bigger buffer.
Add the Project Estimate Calculatorwidget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.
<iframe src="https://www.altftool.com/embed/widget/project-estimate-calculator"
title="Project Estimate Calculator — free AltFTool widget"
width="100%" height="640" style="border:0;border-radius:12px;overflow:hidden"
loading="lazy" referrerpolicy="no-referrer-when-downgrade"></iframe>
<p style="font-size:12px;margin:4px 0 0">Widget by <a href="https://www.altftool.com/tools/all/project-estimate-calculator?utm_source=embed&utm_medium=widget">AltFTool — free online tools</a></p>