---
type: "Collection Page"
title: "Free marketing tools: calculators, audits and AI checks"
description: "ROAS, ad budget, ROI, LTV:CAC, conversion rate and A/B test calculators, a Google Ads audit grader and AI checks. Free, no sign-up."
url: "https://www.roicool.com/en/tools"
lang: "en"
dateModified: "2026-10-17"
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  - { title: "See the check", resource: "https://www.roicool.com/en/tools/ai-visibility-check.md" }
  - { title: "Start the check", resource: "https://www.roicool.com/en/tools/ai-readiness-check.md" }
  - { title: "Start the grader", resource: "https://www.roicool.com/en/tools/google-ads-audit-grader.md" }
  - { title: "Calculate", resource: "https://www.roicool.com/en/tools/roas-calculator.md" }
  - { title: "Calculate", resource: "https://www.roicool.com/en/tools/ad-budget-calculator.md" }
  - { title: "Calculate", resource: "https://www.roicool.com/en/tools/roi-calculator.md" }
  - { title: "Calculate", resource: "https://www.roicool.com/en/tools/ltv-cac-calculator.md" }
  - { title: "Calculate", resource: "https://www.roicool.com/en/tools/conversion-rate-calculator.md" }
  - { title: "Calculate", resource: "https://www.roicool.com/en/tools/ab-test-sample-size-calculator.md" }
  - { title: "Our GEO service", resource: "https://www.roicool.com/en/services/geo-agency.md" }
  - { title: "AI visibility guide (e-book)", resource: "https://www.roicool.com/en/ebook/ai-visibility-guide.md" }
---

# Free marketing tools

Nine tools that work without a sign-up form: calculators for your advertising and growth numbers, an audit grader for your Google Ads account and checks of how your site shows up in AI.

## Enter your numbers, see the result right away.

### AI visibility check

Do ChatGPT, Gemini and Perplexity mention your brand, and which competitors do they recommend instead? The check runs on Ossvy.

[See the check](https://www.roicool.com/en/tools/ai-visibility-check)

### AI readiness check

Enter your URL and see AI crawler access, llms.txt, structured data and core SEO signals in 12 rows.

[Start the check](https://www.roicool.com/en/tools/ai-readiness-check)

### Google Ads audit grader

Answer 20 questions; see your account's score in five areas and the five things to fix first.

[Start the grader](https://www.roicool.com/en/tools/google-ads-audit-grader)

### ROAS calculator

Enter ad spend, revenue, sales and leads; see ROAS, CPA, CPL and your break-even ROAS.

[Calculate](https://www.roicool.com/en/tools/roas-calculator)

### Ad budget calculator

Enter your monthly target, conversion rate and cost per click; see the monthly and daily budget you need.

[Calculate](https://www.roicool.com/en/tools/ad-budget-calculator)

### ROI calculator

Enter your marketing investment and the revenue it brought; see the return on investment (ROI) on gross profit.

[Calculate](https://www.roicool.com/en/tools/roi-calculator)

### LTV:CAC calculator

Enter monthly revenue per customer, margin, churn and acquisition spend; see LTV, CAC and the LTV:CAC ratio.

[Calculate](https://www.roicool.com/en/tools/ltv-cac-calculator)

### Conversion rate calculator

Enter visitors and conversions; see your conversion rate and the extra conversions a target rate would bring.

[Calculate](https://www.roicool.com/en/tools/conversion-rate-calculator)

### A/B test sample size calculator

Enter your current conversion rate and the lift you want to detect; see the visitors per variant and the test length.

[Calculate](https://www.roicool.com/en/tools/ab-test-sample-size-calculator)

Breadcrumb: [Home](https://www.roicool.com/en) › [Resources](https://www.roicool.com/en/resources) › Tools

Related pages:

- [Our GEO service](https://www.roicool.com/en/services/geo-agency)
- [AI visibility guide (e-book)](https://www.roicool.com/en/ebook/ai-visibility-guide)

**Let’s read the results together.** We rank the gaps the tools found by priority and draw up a plan for your advertising, measurement and AI visibility. [Get a proposal](https://www.roicool.com/en/get-a-proposal) · [Our GEO service](https://www.roicool.com/en/services/geo-agency)

Source: https://www.roicool.com/en/tools · Last updated: 2026-10-17