Calculator Inputs
Example Data Table
| Keyword | Search Volume | Base CPC | CTR | Conv. Rate | Recommended Bid |
|---|---|---|---|---|---|
| running shoes | 18,000 | $1.75 | 4.8% | 3.4% | $1.96 |
| trail shoes | 9,400 | $1.52 | 4.1% | 3.0% | $1.63 |
| marathon shoes | 6,700 | $2.12 | 5.2% | 3.8% | $2.04 |
Formula Used
Estimated Bid = Base CPC × Competition Multiplier × Position Multiplier × Quality Discount × Seasonality × Geo × Device × Daypart × Brand × Match × Risk Adjustment
CPA Cap Bid = Target CPA × Conversion Rate
ROAS Cap Bid = (Average Order Value ÷ ROAS Target) × Conversion Rate
Margin Cap Bid = (Average Order Value × Profit Margin) × Conversion Rate
Recommended Bid = minimum of Estimated Bid, CPA Cap Bid, ROAS Cap Bid, and Margin Cap Bid
Estimated Clicks = Search Volume × CTR, limited by budget
Estimated Spend = Clicks × Recommended Bid
Estimated Conversions = Clicks × Conversion Rate
Estimated Revenue = Conversions × Average Order Value
Estimated ROAS = Revenue ÷ Spend
How to Use This Calculator
Enter the keyword, match type, search volume, market CPC, and expected CTR first. Then add business metrics such as conversion rate, order value, margin, and target CPA.
Next, refine the bid using seasonality, geography, device, time-of-day, brand efficiency, and risk buffer. These inputs help model real advertising conditions more accurately.
Press Estimate Bid to calculate recommended, conservative, and aggressive bid ranges. The result appears below the header and above the form.
Review the Plotly chart and scenario table to compare spend, revenue, and conversions across bid levels. Download the outputs as CSV or PDF for reporting.
FAQs
1. What does this keyword bid estimator calculate?
It estimates a recommended keyword bid using CPC, competition, position, quality score, conversion rate, margin, CPA target, and ROAS target together.
2. Why are there conservative and aggressive bids?
These give a safer lower bid and a stronger growth bid. They help compare efficiency against volume when planning campaigns.
3. How does quality score affect the result?
Higher quality scores reduce the effective bid requirement. Better relevance and landing page quality can improve position at lower cost.
4. Why does the calculator limit clicks by budget?
Budget can cap how many clicks you can actually afford. Without that limit, forecasts may look larger than your spend allows.
5. What is the break-even CPC?
Break-even CPC is the highest click cost you can pay without losing gross profit, based on margin and conversion rate.
6. Can I use this for branded and non-branded keywords?
Yes. The brand factor helps model lower-cost branded traffic or more competitive generic traffic within the same framework.
7. Why use ROAS and CPA caps together?
Using both prevents bids that meet one target but fail another. It creates a more disciplined recommendation for multi-metric campaigns.
8. Is this result a final platform bid?
No. It is a planning estimate. Actual auction dynamics, ad relevance, competition changes, and automation strategies can shift real costs.