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Free tool · Live calculations

Reverse-engineer your
marketing budget like
a CFO would.

Stop guessing your ad budget. Start with what you want to make, work backwards through your math, and find out exactly what you need to spend to hit it. Plus how to split it across channels.

Your goals

What’s your
target?

Monthly revenue goal From paid ads
$
Average customer value Per sale or LTV
$
Lead-to-customer rate Close rate
%
Average cost per lead CPL from your ads
$
Channel mix Where ads run
Balanced (50/50)
Meta-heavy (70/30)
Google-heavy (30/70)
Meta only
Google only
Your monthly plan

You need to spend this much.

Required monthly ad spend
$0
/ month
Leads needed / mo
0
Customers / mo
0
Your ROAS
0×
Cost per customer
$0
Channel allocation
Meta (Facebook + Instagram) $0
Google Ads $0
If you hit different ROAS targets:
Conservative · Tighter spend, slower growth $0
Healthy · Industry average for your math $0
Excellent · Best-in-class campaigns $0

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A note on these numbers

This calculator runs simple math: revenue ÷ customer value = customers needed → ÷ close rate = leads needed → × CPL = spend. It assumes your CPL holds steady at your stated rate, which gets harder as you spend more (cost rises, audiences saturate). Use this to plan your floor, not your ceiling. Channel split is a starting point — the optimal mix depends on your industry, offer, and creative. We typically recalibrate channel allocation every 30–60 days based on actual performance.

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