A plumber calculator is four sums, and a contractor runs each of them every week: what size and dimensions a pipe is, how much fall a drain run needs, what a task should cost at the shop's own loaded rate, and what the job comes to from its tasks. This site carries a free tool for each, and every one prints its answer in the page before any script runs, with no account. This page is the index of the four and what each takes in.
Pipe size and dimensions
The pipe size tool on this site takes the nominal size and the material and gives the outside diameter and the wall or inside diameter from the licensed tables for copper tube and Schedule 40 PVC. It is the table the technician needs at the fitting counter, and the reference the drain fall sum is keyed to.
Drain fall over a run
The code table gives the minimum slope by pipe size, and the fall for a run is the slope multiplied by the length. The sewer line drop page on this site carries the table with its citation and the arithmetic; the pipe size tool is the diameter reference.
The task price
The flat rate pricing tool takes the hours a task takes, the loaded hourly rate and the parts at cost with the markup, and gives the task price. The price book template holds the answers at one revision, so the sum is run once per task and not once per estimate.
The estimate
The estimating tool takes the tasks from the price book, the hourly work, the fees and the deposit and gives the estimate the customer signs, and the invoice tool prints the same figures after the work. RoughInDesk Pro keeps the chain from the estimate to the payment.
Questions people ask about plumber calculator
Are the calculators free?
Yes, every tool on this site works without an account and prints its answer in the page.
Do the calculators know my rates?
You enter them; the tools print from your figures. The paid product stores the price book so they are entered once.
Which calculator first?
The flat rate pricing tool, because the task price is the figure every other sum depends on.