Free analytics tools. Calculators and generators for marketers and analysts.

Analytics tools for ecommerce and marketing

A collection of free calculators and generators to help you optimize campaigns, analyze profitability and make data-driven decisions. All tools run in your browser — no registration, no limits.

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GA4 Events Encyclopedia

50+ events with documentation, code examples and search.

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GA4 Configuration Auditor

Check in 5 minutes if your GA4 is properly configured.

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Analytics & Tracking

Tools for configuring tracking and data analysis in GA4, Piwik PRO and GTM.

Attribution Simulator

Compare attribution models (Last Click, First Click, Linear, Time-Decay) and see how they affect value assigned to marketing channels.

  • Build your own customer path
  • ROI per channel calculator
  • Export to PDF/CSV

BigQuery Calculator

Estimate monthly costs of exporting GA4 data to BigQuery based on traffic and data retention.

  • Storage cost calculation
  • Query cost estimation
  • Plan comparison

UTM / PK Link Creator

Generate links with tracking parameters for Google Analytics 4 (UTM) and Piwik PRO (PK). Tag campaigns with one click.

  • Templates for popular sources
  • Generated links history
  • UTM + PK mode combined

dataLayer Generator

Generate ready-to-use dataLayer code for Google Tag Manager. Templates for GA4 Ecommerce, custom events and forms.

  • All GA4 Ecommerce events
  • Custom events with parameters
  • Enhanced Conversions (hashing)

Funnel Calculator

Paste an event export from GA4 and build a conversion funnel visualization with drop-off and conversion rate calculations.

  • CSV import from GA4
  • Funnel visualization
  • Export to PNG

Performance & ROI

Calculators for ad campaign profitability and customer value.

ROAS/ROI Calculator

Calculate return on ad spend, find break-even ROAS and determine maximum CPA while staying profitable.

  • Break-even ROAS for your margin
  • Ad budget planner
  • Campaign comparison

LTV Calculator

Calculate Customer Lifetime Value, LTV:CAC ratio and maximum customer acquisition cost.

  • Simple and retention models
  • Cohort visualization
  • Scenario comparison

Ads Cost Calculator

Convert ad metrics CPM, CPC, CPA. Plan budgets and calculate maximum bids.

  • CPM ↔ CPC ↔ CPA converter
  • Budget planner
  • Max bid calculator

Ecommerce & Testing

Tools for margin, pricing and A/B test calculations.

Margin & Price Calculator

Calculate margin and markup, set selling prices, analyze the impact of discounts on profit.

  • Margin vs Markup
  • Discount simulator
  • Price scenario comparison

A/B Test Calculator

Calculate sample size, check statistical significance and plan A/B test duration.

  • Sample size calculator
  • Significance test (p-value)
  • Multiple variant comparison

AI Tools

AI model catalog, prompt generator, model selector and ROI calculator for AI implementation.

AI Models (catalog)

Overview of 13+ LLM providers with comparison of capabilities, pricing and deployment options.

  • 13 providers compared
  • Pricing and costs
  • Deployment options

AI Model Selector

Answer 9 questions about budget, compliance, scale and integrations — get specific model recommendations.

  • 9 decision criteria
  • Cost estimates
  • Top 6 recommendations

AI Prompt Creator

Advanced prompt generator — 8 steps to a precise instruction for ChatGPT, Claude, Gemini and more.

  • 8-step wizard
  • Prompt templates
  • Quality scoring

AI ROI Calculator

Calculate how much you'll save by implementing AI — concrete numbers, not promises.

  • Industry-specific analysis
  • Task time savings
  • Break-even calculation

Need help with analytics?

I offer consulting, audits and implementations for GA4, Piwik PRO, GTM, and dashboards in Looker Studio and Power BI.

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