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
Monthly budget needed
$4,800
Clicks required
2,000
Cost per acquisition
$60.00
Max CPC before you lose money
$2.80
Expected gross profit after spend
$800
Psst — share this and help Rex grow
One click, a permanent link with your numbers baked in.
How to use this
- 1Enter customers wanted per month.
- 2Enter average cost per click ($).
- 3Enter click to customer rate (%).
- 4Enter average order value ($).
- 5Enter gross margin (%).
- 6Read your monthly budget needed on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
Works backwards from the customers you want: how many conversions, how many clicks, how much budget at your CPC. It also shows the maximum CPC you can afford before the campaign stops paying.
Worked example
Using the values the calculator loads with:
Inputs
- Customers wanted per month: 80
- Average cost per click: 2.4 $
- Click to customer rate: 4 %
- Average order value: 140 $
- Gross margin: 50 %
Results
- Monthly budget needed: $4,800.00
- Clicks required: 2,000
- Cost per acquisition: $60.00
- Max CPC before you lose money: $2.80
- Expected gross profit after spend: $800.00
What each field means
Inputs
- Customers wanted per month
- The customers wanted per month used in the calculation. Starts at 80 so you have a working example on load.
- Average cost per click ($)
- The average cost per click used in the calculation, measured in $. Starts at 2.4 $ so you have a working example on load.
- Click to customer rate (%)
- The click to customer rate used in the calculation, measured in %. Starts at 4 % so you have a working example on load. Accepted range: 0.01–100 %.
- Average order value ($)
- The average order value used in the calculation, measured in $. Starts at 140 $ so you have a working example on load.
- Gross margin (%)
- The gross margin used in the calculation, measured in %. Starts at 50 % so you have a working example on load. Accepted range: 1–100 %.
Results
- Monthly budget needed
- 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.
- Clicks required
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Cost per acquisition
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Max CPC before you lose money
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Expected gross profit after spend
- 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 ppc budget calculator work?
Works backwards from the customers you want: how many conversions, how many clicks, how much budget at your CPC. It also shows the maximum CPC you can afford before the campaign stops paying. The underlying maths is: Budget = Customers ÷ Conversion rate × CPC. Max CPC = Order value × Margin × Conversion rate.
What do I need to enter?
5 values: customers wanted per month, average cost per click, click to customer rate, average order value, and gross margin. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the monthly budget needed 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). PPC Budget Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/cpc-budget
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/cpc-budget" target="_blank" rel="noopener">PPC Budget Calculator — RevenueLab</a> (2026).</p>
Source: [PPC Budget Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/cpc-budget) (2026).