Tools / Influencer ROI

Did the campaign actually pay?

ROAS and profit-based ROI from real campaign numbers, or a forecast before you commit the budget. Reach is not in here, because reach is not a result.

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Campaign actuals

ROAS

Revenue ÷ cost

ROI (revenue)

Add margin for the honest number

The math, in the open

  • ROAS = attributed revenue ÷ campaign cost
  • ROI (profit) = (revenue × gross margin − cost) ÷ cost
  • Projection = views × CTR × conversion rate × AOV

If your agency reports reach instead of these, we wrote up what to ask them instead.

ROI questions

Asked every week.

Unique links and unique discount codes per creator. If the campaign ran without them, you are estimating, not measuring. A 2025 Statista study found most brands that could confidently attribute influencer revenue used unique links or codes; the fix is unglamorous and it is the only one that works.

ROAS is revenue divided by cost: five units of revenue for every one spent is a 5x ROAS. ROI is profit-based: it applies your gross margin to the revenue first, then subtracts the cost. A 5x ROAS at 30% margin is a 50% ROI, not a 400% one. Agencies report ROAS because it is the bigger number.

Creator fees, gifted product at cost, agency or management fees, paid amplification of the creator content, and shipping or logistics for the campaign. Counting only the creator fee understates cost and flatters the result.

No. It multiplies your expected views, click-through rate, conversion rate and order value into a forecast. It is useful for sizing a campaign before you commit, and for setting targets a creator campaign must hit to break even. Real numbers replace it the week the campaign ships.

If the numbers disappointed

The campaign was not
the problem. The brief was.

Most influencer spend fails at creator selection and measurement design, before the first post goes live. That is the part we fix.

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Writers and marketing teams are welcome to embed this tool in their own articles and resource pages. Paste the snippet where you want it to appear, and keep the credit line visible: that is the whole deal.

<iframe src="https://www.bigbangstory.com/embed/influencer-roi-calculator" width="100%" height="1150" style="border:0;border-radius:16px;background:#1A1A1A" loading="lazy" title="Influencer ROI Calculator by Big Bang Story"></iframe>
<p style="font:13px/1.5 sans-serif;margin:8px 0 0">Free <a href="https://www.bigbangstory.com/tools/influencer-roi-calculator">influencer marketing ROI calculator</a> by <a href="https://www.bigbangstory.com">Big Bang Story</a></p>

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