Break-Even ROAS Calculator
Minimum ROAS on attributed revenue equal to 1 ÷ gross margin decimal when margin is stable.
Open calculator →Break-even CPC Calculator
Highest affordable CPC when gross profit per order meets your on-site conversion to purchase.
Overview
Use before approving higher bids—not as a substitute for auction dynamics. Multiply gross contribution per buyer by the conversion rate you assume from click to checkout.
When to use this calculator
- Before you raise bids on cold traffic
- When conversion rate and gross profit per order are your real guardrails
- When you pitch media internally and need a max CPC under current assumptions
- When refunds or promos move real margin and you want CPC limits updated
Rule of thumb
This caps CPC before you lose money under your gross profit and conversion assumptions—leave slack for tracking gaps and refunds.
Terms used in this calculator
- Break-even CPC
- The highest cost per click you can afford before a campaign loses money under your guesses for gross profit per order and conversion to purchase.
- CPC
- What you paid on average for one ad click.
- Conversion rate
- Share of a clear baseline group—visits, sessions, leads—that finished the goal you named.
Calculator
Break-even CPC
$1.00
Results are simplified estimates for educational purposes only and should not be treated as financial, accounting, legal, or tax advice. See our disclaimer for details.
Formula
Gross profit per sale × (conversion rate ÷ 100). Conversion should reflect the funnel your paid clicks actually touch.
Example calculation
Using the default example values from the JSON seed for this tool:
- Gross profit per sale
- 50
- Conversion rate (site/session to order)
- 2
Result: $1.00 (Break-even CPC)
How to interpret this result
Maximum on-site CPC you can afford if every session matches your conversion and gross-profit assumptions.
Ad platform bids differ because not every ad click becomes a site session with purchase intent.
Stress-test with segment CVR and gross profit when promos change.
Common mistakes
- Using blended sitewide CVR for a focused landing page you actually buy to.
- Excluding discounts or refunds from gross profit.
- Equating result to ad max CPC without click-to-site losses.
What to do next
Pair with CPC, landing conversion, and product margin tools so clicks, site reality, and COGS agree.
How to improve this result
- Improve on-site conversion before raising bids.
- Increase gross profit with pricing, upsells, or COGS discipline.
- Segment CVR by landing page so economics match your paid traffic.
Recommended tools
- Google Ads Help Official documentation for campaign structure and measurement basics.
- Meta Business Suite Manage Meta ad accounts, Pages, and reporting in one place.
- Shopify Commerce platform for building and scaling an online store.
FAQ
- Is output my max CPC bid?
- It is economics guardrail, not literal bid caps—lost clicks between ad and landing still widen reality.
- Gross profit or revenue?
- Gross profit after variable costs attached to fulfilling the sale.
- Can I reuse blended sitewide CVR?
- Only if paid traffic behaves like blended traffic—not usually true.
- What about LTV-heavy businesses?
- This is single-sale math—extend externally if repeat buyers justify higher CPC consciously.
- Why pair with CPC calculator?
- Break-even CPC is target; CPC calculator compares live auction pricing.
Related calculators
CPC Calculator
Total ad spend ÷ measured clicks for the same scope and dates.
Open calculator →ROAS Calculator
Attributed revenue ÷ ad spend for the attribution window your team adopts.
Open calculator →Affiliate disclosure
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