Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Quote the client
$14,214
50% deposit to invoice up front
$7,107
Raw cost of delivery
$10,300
Contingency built in
$2,060
Profit if it runs to plan
$3,914
Effective hourly rate
$177.67
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter estimated hours.
- 2Enter your hourly rate ($).
- 3Enter direct costs and subcontractors ($).
- 4Enter contingency buffer (%).
- 5Enter profit margin on top (%).
- 6Read your quote the client on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
Fixed-price work fails when scope creep eats the margin. Build in a contingency, price the revisions you know are coming, and quote a number you can still profit on at 130% of the estimated hours.
Worked example
Using the values the calculator loads with:
Inputs
- Estimated hours: 80
- Your hourly rate: 110 $
- Direct costs and subcontractors: 1500 $
- Contingency buffer: 20 %
- Profit margin on top: 15 %
Results
- Quote the client: $14,214.00
- 50% deposit to invoice up front: $7,107.00
- Raw cost of delivery: $10,300.00
- Contingency built in: $2,060.00
- Profit if it runs to plan: $3,914.00
- Effective hourly rate: $177.67
What each field means
Inputs
- Estimated hours
- The estimated hours used in the calculation. Starts at 80 so you have a working example on load.
- Your hourly rate ($)
- The your hourly rate used in the calculation, measured in $. Starts at 110 $ so you have a working example on load.
- Direct costs and subcontractors ($)
- The direct costs and subcontractors used in the calculation, measured in $. Starts at 1500 $ so you have a working example on load.
- Contingency buffer (%)
- The contingency buffer used in the calculation, measured in %. Starts at 20 % so you have a working example on load. Accepted range: 0–100 %.
- Profit margin on top (%)
- The profit margin on top used in the calculation, measured in %. Starts at 15 % so you have a working example on load. Accepted range: 0–100 %.
Results
- Quote the client
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- 50% deposit to invoice up front
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Raw cost of delivery
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Contingency built in
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Profit if it runs to plan
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Effective hourly rate
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the project quote calculator work?
Fixed-price work fails when scope creep eats the margin. Build in a contingency, price the revisions you know are coming, and quote a number you can still profit on at 130% of the estimated hours. The underlying maths is: Quote = (Hours × Rate + Costs) × (1 + Contingency) × (1 + Margin).
What do I need to enter?
5 values: estimated hours, your hourly rate, direct costs and subcontractors, contingency buffer, and profit margin on top. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the quote the client result mean?
It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
Who is this tool for?
It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Project Quote Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/project-quote
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/project-quote" target="_blank" rel="noopener">Project Quote Calculator — RevenueLab</a> (2026).</p>
Source: [Project Quote Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/project-quote) (2026).