Count the window
Start and deadline dates are inclusive. Only your Monday–Sunday workweek entries survive the filter, and blocked dates are removed manually.
Private, local planning tool
Deadline Feasibility Planner
Check whether your remaining work fits between two dates using your own workdays, daily capacity, blocked dates, and buffer assumptions.
tool only — not for production. No account, calendar connection, or saved project data.
Step 1 · Enter assumptions
Can this window hold the work?
Everything is calculated in your browser from the values below. There is no default eight-hour day.
Results update as you type; this button focuses the first invalid field when needed.
Check these fields
There is no result until the highlighted assumptions are valid.
- missing_datestartDate — Enter a start date.
- missing_datedeadlineDate — Enter a deadline date.
- invalid_hoursWork item 0 remainingHours — Remaining hours is required and cannot be negative.
- invalid_hoursdailyCapacityHours — Daily capacity is required and cannot be negative.
- no_resultresult — Correct the highlighted fields before calculating.
How the model works
A transparent date-only scenario
Add your buffers
Required hours = total hours + (total hours × buffer percent ÷ 100) + fixed buffer hours.
Read the signal
Utilization below 90% is feasible, 90% through 100% is critical, and above 100% is overloaded. This threshold is a tool assumption, not a benchmark.
Context only
Primary source notes
These first-party Upwork help pages frame milestone planning context. They do not supply platform rules to the formula.
Understanding milestones on fixed-price contracts
Primary source for milestone planning context; platform rules are not used as calculator inputs.
https://support.upwork.com/hc/en-us/articles/44564821903763-Understanding-milestones-on-fixed-price-contractsReview and pay for fixed-price contracts and milestones
Primary source for milestone lifecycle context; this tool does not model review or payment timing.
https://support.upwork.com/hc/en-us/articles/360000980507-Review-and-pay-for-fixed-price-contracts-and-milestonesQuestions
Before you act on a result
Are the dates inclusive?
Yes. The start and deadline dates are both included, then filtered by the workweek and your manually entered blocked dates.
What does the critical warning mean?
A 90% to 100% utilization band is a transparent reminder threshold chosen for this tool, not an industry benchmark.
Does this import holidays or calendar events?
No. The planner is local-only and uses only the blocked dates you enter; it does not connect to a calendar or project system.
Boundaries
What this tool does not do
This is a planning scenario based on your inputs. It is not a delivery guarantee.
- No calendar, holiday, project-management, account, database, local storage, or server-log connections.
- No promise of delivery, employment advice, rates, revenue, or benchmark performance.
- No partner-tool navigation in this tool; any production pairing requires a separate approved change.