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
Vilo
Founder, Perfoads ·
2 min skim

Pawel “Vilo” Wilk — Google Ads specialist running the Project UP performance team. 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 5 minutes — read-only access, prioritized fix list.

Start the audit — $49/mo per account

Additional accounts $29/mo each (up to 10) · Cancel anytime · 30-day guarantee