Free Google Ads Calculators

Quick math for the questions that come up on every Google Ads audit. No email, no signup, no tracking — just the formula and your numbers.

V
Pawel Wilk
Founder, Perfoads ·
2 min skim

Pawel Wilk, founder of PerfoAds. Same math I use on every audit.

No email requiredCalculates instantlyInputs stay in your browser

Google Ads ROI Calculator

Plug in ad spend and revenue. Get ROAS, net profit, ROI %, and your breakeven ROAS based on margin.

Inputs: Ad spend, revenue, COGS %
Output: ROAS, profit, ROI %, breakeven
Open calculator

Google Ads CPA Target Calculator

Work backwards from deal size and target margin to find a CPA you should aim for — and the max profitable cost-per-lead.

Inputs: Avg deal size, target CAC %, close rate
Output: Target CPA, max CPL
Open calculator

Want the calculator math run on YOUR live data?

A Perfoads audit calculates ROAS, breakeven CPC, and target CPA against your actual Google Ads account in about 30 minutes, with a secure Google login and a prioritized fix list.

Start the audit: $149/mo per account

Up to 10 accounts, $149 each · Cancel anytime