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
Campaign ROI
99.0%
ROAS
3.21
Attributed revenue
$28,560
Net contribution after cost
$8,807
Cost per acquisition
$21.19
Orders needed to break even
212
Psst — share this and help Rex grow
One click, a permanent link with your numbers baked in.
How to use this
- 1Enter creator fees ($).
- 2Enter gifted product + shipping cost ($).
- 3Enter attributed orders.
- 4Enter average order value ($).
- 5Enter gross margin (%).
- 6Read your campaign roi on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
A campaign that returns 2x on paid media can still lose money once product cost and creator fees are counted. This runs the full contribution math, not just ROAS.
Worked example
Using the values the calculator loads with:
Inputs
- Creator fees: 8000 $
- Gifted product + shipping cost: 900 $
- Attributed orders: 420
- Average order value: 68 $
- Gross margin: 62 %
Results
- Campaign ROI: 99.0%
- ROAS: 3.21
- Attributed revenue: $28,560.00
- Net contribution after cost: $8,807.20
- Cost per acquisition: $21.19
- Orders needed to break even: 212
What each field means
Inputs
- Creator fees ($)
- The creator fees used in the calculation, measured in $. Starts at 8000 $ so you have a working example on load.
- Gifted product + shipping cost ($)
- The gifted product + shipping cost used in the calculation, measured in $. Starts at 900 $ so you have a working example on load.
- Attributed orders
- The attributed orders used in the calculation. Starts at 420 so you have a working example on load.
- Average order value ($)
- The average order value used in the calculation, measured in $. Starts at 68 $ so you have a working example on load.
- Gross margin (%)
- The gross margin used in the calculation, measured in %. Starts at 62 % so you have a working example on load. Accepted range: 0–100 %.
Results
- Campaign ROI
- Returned as a percentage and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- ROAS
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Attributed revenue
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Net contribution after cost
- Returned as a money amount in US dollars. 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.
- Orders needed to break even
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the influencer marketing roi calculator work?
A campaign that returns 2x on paid media can still lose money once product cost and creator fees are counted. This runs the full contribution math, not just ROAS. The underlying maths is: ROI % = (Gross profit − Campaign cost) ÷ Campaign cost × 100.
What do I need to enter?
5 values: creator fees, gifted product + shipping cost, attributed orders, 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 campaign roi result mean?
It is returned as a percentage 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). Influencer Marketing ROI Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/influencer-roi
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/influencer-roi" target="_blank" rel="noopener">Influencer Marketing ROI Calculator — RevenueLab</a> (2026).</p>
Source: [Influencer Marketing ROI Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/influencer-roi) (2026).