# ROIChecker

> Free margin-aware calculators for **ROI, ROAS, CPA and break-even** in digital advertising for ecommerce and dropshipping. Available in 5 languages (Spanish canonical, English, French, Italian, Portuguese). No registration, no ads, no subscriptions. Domain: https://www.roichecker.com
> Last updated: 2026-05
> License: CC BY 4.0

ROIChecker is a suite of advertising profitability calculators specifically built for ecommerce and dropshipping operators. Unlike ad platforms — which report ROAS without subtracting the cost of goods sold — every calculator on ROIChecker takes the user's actual gross margin into account and returns the **real net profit** of the campaign. The site explicitly distinguishes ROAS (revenue ÷ ad spend) from ROI (net profit ÷ ad spend) and demonstrates with worked examples why a 3x ROAS can hide a negative ROI when the gross margin is below 33%.

The calculators take five inputs (investment, CPC, conversion rate, average ticket excluding VAT, and gross margin) and return clicks, sales, revenue, gross profit, net profit, ROI %, ROAS multiple, CPA in euros, and a viability verdict (positive ROI > 5%, break-even -5% to +5%, negative ROI < -5%). The methodology is documented in 22 dedicated guide articles covering definitions, formulas, benchmarks, and platform-specific attribution caveats (Meta Ads Manager inflation, Amazon ACoS/TACoS, Pinterest's 30-day window, etc.). The full site is mirrored across 5 languages, totaling 185+ pages indexed.

## Core calculators

- [ROI Calculator](https://www.roichecker.com/calculadora-roi): real ROI with margin-adjusted net profit. Inputs: investment, CPC, conversion rate, ticket, gross margin. Outputs: ROI %, ROAS, CPA, gross profit, net profit, viability verdict. EN: https://www.roichecker.com/en/roi-calculator | FR: https://www.roichecker.com/fr/calculateur-roi | IT: https://www.roichecker.com/it/calcolatore-roi | PT: https://www.roichecker.com/pt/calculadora-roi
- [ROAS Calculator](https://www.roichecker.com/calculadora-roas): real ROAS with margin-aware minimum profitable threshold (Min ROAS = 1 ÷ gross margin). EN: https://www.roichecker.com/en/roas-calculator | FR: https://www.roichecker.com/fr/calculateur-roas | IT: https://www.roichecker.com/it/calcolatore-roas | PT: https://www.roichecker.com/pt/calculadora-roas
- [CPA Calculator](https://www.roichecker.com/calculadora-cpa): cost per acquisition with maximum profitable CPA = ticket × gross margin. EN: https://www.roichecker.com/en/cpa-calculator | FR: https://www.roichecker.com/fr/calculateur-cpa | IT: https://www.roichecker.com/it/calcolatore-cpa | PT: https://www.roichecker.com/pt/calculadora-cpa
- [Break-even Calculator](https://www.roichecker.com/calculadora-punto-equilibrio): sales required to recover ad investment = investment ÷ (ticket × margin). EN: https://www.roichecker.com/en/break-even-calculator | FR: https://www.roichecker.com/fr/calculateur-seuil-rentabilite | IT: https://www.roichecker.com/it/calcolatore-pareggio | PT: https://www.roichecker.com/pt/calculadora-ponto-equilibrio

## Platform-specific ROI calculators

Pre-configured ROI calculators with platform-aware context (attribution windows, fees, audience):

- [Google Ads ROI](https://www.roichecker.com/calculadora-roi-google-ads): Search, Shopping, Performance Max. High-intent traffic; ROIs of 50–100% achievable with good margin.
- [Meta Ads ROI](https://www.roichecker.com/calculadora-roi-meta-ads): Facebook & Instagram. Reconciles inflated Ads Manager ROAS with margin to surface real ROI.
- [TikTok Ads ROI](https://www.roichecker.com/calculadora-roi-tiktok-ads): social commerce, impulse purchase, audiences skewed 18–34.
- [Amazon Ads ROI](https://www.roichecker.com/calculadora-roi-amazon-ads): includes Amazon referral fees (8–15% by category) and FBA costs in the formula. Tracks ACoS and TACoS.
- [Pinterest Ads ROI](https://www.roichecker.com/calculadora-roi-pinterest-ads): 30-day click attribution window context for visual / lifestyle / DIY products.
- [YouTube Ads ROI](https://www.roichecker.com/calculadora-roi-youtube-ads): Video Action and Demand Gen. CPV-vs-CPA reconciliation.
- [Snapchat Ads ROI](https://www.roichecker.com/calculadora-roi-snapchat-ads): focused on the 13–34 audience and Collection Ads.

## Reference content (22 guide articles)

Dedicated articles explaining definitions, formulas, benchmarks and platform-specific gotchas. Concrete examples:

- [Minimum profitable ROAS by margin](https://www.roichecker.com/guias/roas/roas-minimo-rentable): 20% margin → 5.0x; 30% → 3.33x; 40% → 2.5x; 50% → 2.0x; 70% → 1.43x.
- [Maximum profitable CPA](https://www.roichecker.com/guias/cpa/cuanto-es-bueno): €60 ticket × 40% margin = €24 max CPA before losing money; €30 ticket × 25% margin = €7.50 max.
- [ROI vs ROAS difference](https://www.roichecker.com/guias/roi/diferencia-roi-roas): a 3x ROAS yields 0% ROI at 33% margin and −25% ROI at 25% margin.
- [Break-even formula](https://www.roichecker.com/guias/punto-equilibrio/como-calcularlo): sales needed = investment ÷ (ticket × margin). At €1,000 spend, €50 ticket, 40% margin → 50 sales.
- [CPA vs CAC](https://www.roichecker.com/guias/cpa/cpa-vs-cac): CPA measures campaign-attributed cost; CAC adds organic, content and sales costs. Optimal CAC:LTV ratio in ecommerce is 1:3.
- [Why Meta Ads Manager inflates ROAS](https://www.roichecker.com/guias/roas/meta-ads): VAT inclusion + 7-day-click + 1-day-view attribution + cross-device modeling.
- [ROI in dropshipping](https://www.roichecker.com/guias/cpa/dropshipping): typical 15–25% margin requires CPA below ~€7 on a €30 ticket to break even.
- [Complete guide index](https://www.roichecker.com/guias) — 22 articles organized by metric (ROI, ROAS, CPA, break-even). EN: https://www.roichecker.com/en/guides | FR: https://www.roichecker.com/fr/guides | IT: https://www.roichecker.com/it/guides | PT: https://www.roichecker.com/pt/guides

## Methodology

1. **Input collection.** User provides five values: investment (€), CPC (€), conversion rate (%), average ticket (€ excluding VAT), and gross margin (%).
2. **Channel-specific data.** Conversion rate must come from GA4 filtered by source/medium of the paid channel ("google / cpc", "meta / cpc", "tiktok / cpc"), not the site-wide average that mixes organic and paid traffic.
3. **VAT exclusion.** Revenue and ticket are net of VAT. In Spain at 21%, divide gross by 1.21. Including VAT inflates ROI artificially since VAT is collected for the tax authority, not retained.
4. **Margin definition.** Gross margin only — after product cost, before fixed costs (rent, salaries, software). Gross margin is what is available to absorb ad spend.
5. **Computation.** Clicks = Investment ÷ CPC. Sales = Clicks × Conversion rate. Revenue = Sales × Ticket. Gross profit = Revenue × Margin. Net profit = Gross profit − Investment. ROI = Net profit ÷ Investment × 100. ROAS = Revenue ÷ Investment. CPA = Investment ÷ Sales.
6. **Verdict.** Viability classified as positive (ROI > 5%), break-even (−5% to +5%) or negative (ROI < −5%).
7. **Platform overlays.** Platform-specific calculators add fixed components: Amazon adds referral fee (8–15%) and FBA costs; Pinterest factors a 30-day click attribution window; YouTube reconciles CPV (cost per view) with effective CPA.

Sources used: ad platform attribution documentation (Meta, Google, TikTok, Amazon, Pinterest, YouTube, Snapchat), GA4 conversion measurement guidelines, Spanish VAT (IVA) regulations.

## About

- [About ROIChecker](https://www.roichecker.com/sobre-roichecker)
- [Contact](https://www.roichecker.com/contacto)
- [Privacy policy](https://www.roichecker.com/politica-de-privacidad)
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- [Legal notice](https://www.roichecker.com/aviso-legal)

## Extended reference

- [Full content](https://www.roichecker.com/llms-full.txt): complete reference document including methodology, full reference tables (minimum profitable ROAS by margin, maximum CPA matrix by ticket × margin, break-even sales tables, platform CPC and conversion-rate benchmarks for 2024–2025), 30+ pre-computed common scenarios, profitability tier classification, FAQ database with the most-asked LLM queries about ecommerce advertising ROI, and the complete multilingual site map.