Project Science Plan tool

How Long Will Your Project Take?

Project Science Plan Tool by Phil Coomer - An alternative Project duration estimator from budget and cost.

$

Accepts 10,000,000 or 10m

$

Average daily cost from similar completed projects

Adds 3.5% to cost per day, compounded, for each of those years

0

$1,000,000 / day

How to determine cost per day

  1. Use historical project costs from similar, successfully completed projects — same type of work, similar scope and delivery method.
  2. For each completed project, divide its total cost by the days it actually took. Average those daily costs across as many similar projects as you can. That average is the starting cost per day.
  3. If the work will happen after this year, increase that average by 3.5% for each year beyond the current year, compounded. One year out: multiply by 1.035. Two years out: multiply by 1.035 twice, and so on.

Example: a $1,000,000 historical average two years beyond this year becomes $1,071,225 per day.

Duration

10 days

1.4 weeks

At $1,000,000 per day, a $10,000,000 project takes 10 days.

Weekly spend

$7,000,000

Calendar days

10 days

Target finish

Set a start date

Schedule

Weekdays only

Skip Saturday and Sunday

—

Calculated from the start date plus the duration. Change budget, daily cost, or start date to update it.

Budget remaining

Straight-line burn until the budget is gone

Project Science Plan tool divides budget by a constant cost per day. It does not model ramps, retainage, holidays beyond weekends, or change orders. Saved projects stay in this browser.

For inquiries Phil Coomer - [email protected]

Visits