Marketing & Ad Calculators Tools

Free online marketing calculators — an A/B test significance calculator with real p-values, computed entirely in your browser.

8 tools

Marketing & Ad Calculators tools

CPA Calculator

Solve for CPA, total conversions or ad spend from the other two, set a target CPA to see the conversion gap, and compare against channel benchmarks. Offline.

CLV Calculator

Work out customer lifetime value three ways, with the LTV to CAC ratio and payback month, and see why zero churn breaks the usual formula.

A/B Significance

Run a two-proportion z-test on your A/B test results and get a real p-value, not just a percentage. Fully client-side, no data ever leaves your device.

CTR Calculator

Calculate click-through rate from clicks and impressions, set a target CTR to see the click gap, and compare against common channel benchmarks. Offline.

CPM Calculator

CPM calculator: solve for CPM, impressions or ad spend from the other two, with a target-CPM gap, cost per impression and common channel benchmarks.

CPC Calculator

Solve for CPC, total clicks or ad spend from the other two, set a target CPC to see the click gap, and compare against channel benchmarks. No login needed.

UTM Builder

Tag any link with utm_source, utm_medium and campaign parameters, or paste a finished link and read its fields back out. Existing query strings survive.

Also in Marketing & Ad Calculators

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Profit Margin

Find profit, gross margin and markup from cost and price, or the price that hits a target margin. Rounds prices up so the margin never falls short.

Why These Tools

A/B Test Significance Calculator exists because a taller bar in a dashboard isn't the same claim as a statistically real difference, and the gap between those two things is exactly what a p-value measures. It runs a proper two-proportion z-test rather than eyeballing percentages, checked against Python's own math library during development so the p-values it reports are trustworthy. UTM builders and cost-per-click, cost-per-acquisition and customer lifetime value calculators are queued to follow.