You quoted a flat fee. The job is running long. Enter four numbers to see what you're really earning per hour, and how many extra hours you can absorb before you drop under your floor rate. It runs in your browser and nothing you type is sent anywhere.
A flat fee is only a rate once you divide it by time. The planned rate is the fee divided by the hours you estimated when you wrote the quote. The rate with overrun is the same fee divided by estimated hours plus the extra hours you have already worked and not billed. If that second number is under the hourly floor you need in order to cover costs and take-home pay, the job is already losing money relative to that floor, even if the client paid the agreed fee on time.
The hours you can still absorb are the fee divided by your floor, minus the hours you already estimated. That is the cushion built into the quote. Once extra hours use up that cushion, every further hour pulls the effective rate below the floor. The calculator does not guess how long the rest of the work will take; it only reports the arithmetic on the hours you enter. For a forecast that includes hours still ahead, use the project overrun calculator.
This is most useful mid-job, before you quietly absorb another round of revisions. If the effective rate is already near the floor, the honest next step is a written change order for the added scope, not more unpaid hours. You can price that extra work with the change order cost calculator, and you can compare the original flat fee with hourly billing using the flat fee vs hourly calculator.
The result is not a recommendation to raise or lower your prices, and it is not a forecast of income. It is a check that the quote you already made still covers the time the job is actually taking.
Also free on this site: a scope creep cost calculator, a project buffer and contingency calculator, a retainer vs project pricing calculator, and a day rate to project quote calculator. Each one runs in your browser and only uses the numbers you type.
Flat-Fee Pricing Lab is a $7/month membership that adds one practical pricing tool for flat-fee freelancers each month, with short scripts and a 20-minute check-in. Month 01 is a change-order calculator plus 7 change-order email scripts. Cancel anytime.
See Flat-Fee Pricing Lab ($7/mo) Get the free spreadsheet version
It divides your quoted fee by the hours you planned, then again by planned hours plus unbilled extra hours. If you enter a floor rate, it also shows how many extra hours you can absorb before the effective rate falls below that floor.
No. The page runs the arithmetic locally. There is no account, no form submission and no tracking of the numbers you enter.
It uses the same idea: quoted fee, estimated hours, extra hours and a floor rate. The spreadsheet version is a download you can keep next to a quote. This page is the quick in-browser check.