Free ecommerce ad calculators & tools

ROAS, POAS, CPC, CPA, MER, ACoS, TACoS, contribution margin, Google Ads ROI, CTR, Shopping feed checks, and POAS checklists — free, no signup.

Calculators

Calculator
POAS calculator
Enter revenue, ad spend, and average margin to see Profit on Ad Spend, ROAS, and net profit after ads — before you change a single bid.
Calculator
Break-even ROAS calculator
Break-even POAS is always 1.0 — but the ROAS you need depends on margin. Enter your margin band and optional target POAS to get the revenue floor.
Calculator
ROAS calculator
Enter ad spend and attributed revenue to get Return on Ad Spend as a multiple and a percentage — then compare it to your break-even floor.
Calculator
CPC calculator
Enter total ad spend and click volume to see average cost per click — then compare it to your max CPC and conversion economics.
Calculator
CPA calculator
Enter spend and conversion count to see cost per acquisition — then judge it against contribution margin and target POAS.
Calculator
Break-even CPC calculator
Enter average order value, conversion rate, and margin to see the maximum CPC you can pay before ads stop covering gross profit.
Calculator
Ad profit calculator
Enter revenue, cost of goods, and ad spend to estimate gross profit and net profit after ads — the number ROAS dashboards hide.
Calculator
MER calculator
Enter total store revenue and total marketing spend to see Marketing Efficiency Ratio — a blended view across channels and attribution gaps.
Calculator
ACoS calculator
Enter Amazon ad spend and attributed ad sales to get Advertising Cost of Sales — the inverse of ROAS, expressed as a percent.
Calculator
TACoS calculator
Enter ad spend and total sales (ad + organic) to see Total Ad Cost of Sales — how much advertising costs relative to the whole business.
Calculator
Contribution margin calculator
Enter revenue, product costs, and optional variable costs to see contribution margin dollars and percent — the ceiling for CPA and max CPC.
Calculator
Google Ads ROI calculator
Enter Google Ads spend, attributed revenue, and optional product costs to estimate ROI and whether the budget is buying profit — not just clicks.
Calculator
CTR calculator
Enter impressions and clicks to see click-through rate — a quick read on creative and auction relevance before you judge CPC and CPA.

Validators

Validator
Google Shopping feed validator
Paste a public feed URL. We run Merchant Center–style product data checks (required attributes, formats, duplicate IDs, brand/GTIN) — we do not store the feed.

Checklists

14-day free trial available — start free · full pricing details