Google Ads ROI Calculator
Last updated: November 5, 2026
Estimate Google Ads clicks, conversions, revenue, ROAS, contribution profit and ROI from editable campaign assumptions.
Estimated advertising ROI
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- Estimated clicks: —
- Estimated conversions: —
- Estimated revenue and ROAS: —
- Estimated contribution profit: —
On this page
Quick summary: Estimate Google Ads clicks, conversions, revenue, ROAS, contribution profit and ROI from editable campaign assumptions.
Read the complete guide
Updated reference sections in this guide are in English.
What this calculator estimates
Estimate Google Ads clicks, conversions, revenue, ROAS, contribution profit and ROI from editable campaign assumptions.
How to use it
Enter Advertising spend ($); Average cost per click ($); Website conversion rate (%); Average revenue per conversion ($); Gross margin (%); Other campaign and creative costs ($). Select Calculate to update the results.
How the calculation works
The calculator estimates traffic from the entered cost metric, applies click-through and conversion assumptions, then calculates revenue, gross profit and ROI after advertising and other costs.
Worked example: starting scenario
| Advertising spend ($) | 12000 |
|---|---|
| Average cost per click ($) | 8.5 |
| Website conversion rate (%) | 6 |
| Average revenue per conversion ($) | 550 |
| Gross margin (%) | 65 |
| Other campaign and creative costs ($) | 1500 |
| Estimated advertising ROI | 124.31% |
|---|---|
| Estimated clicks | 1,412 |
| Estimated conversions | 84.7 |
| Estimated revenue and ROAS | $46,588.24 / 3.88x |
| Estimated contribution profit | $16,782.35 |
Important limitations
Attribution, platform reporting, view-through conversions, refunds, repeat purchases, taxes, creative fatigue and incrementality can change actual results.
ROI is undefined when the total modeled cost is zero. The associated cash-flow amounts can still be calculated; an undefined return percentage is not a zero-percent return.
Clicks from a CPC assumption
This page uses average cost per click, so expected clicks = ad spend / CPC. Click-through rate is not required by this CPC model; it would be needed in an impression-based model. Expected conversions = clicks × conversion rate / 100. Fractional conversions are scenario averages, not literal completed orders.
With $1,000 spend and $1 CPC, the model expects 1,000 clicks. At 2% conversion and $100 per order, revenue is $2,000. A 50% gross margin leaves $1,000 contribution, which breaks even against the $1,000 advertising cost before other campaign costs. Revenue divided by ad spend is ROAS; profit divided by total campaign cost is ROI. Neither is a promise of Google Ads performance.
Use one conversion definition
This simple funnel treats a conversion as one successful outcome per click, so the conversion percentage must be between 0% and 100%. If an ad platform counts several events per click, first choose the one order or acquisition outcome you want to value. Using an event count as though every event were a new full-value order can overstate revenue. CPC supplies click volume here; no click-through-rate assumption is needed.