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/ INDEXCALCULATORS·CALCULATOR BAY
Know your numbers before you spend a penny.
Every campaign we run starts with the same question: what does break-even actually look like for this business? These are the calculators we use to answer it — free, no email gate, no sales call. Your numbers stay in your browser.
CALCULATOR BAY:04 CALCULATORS ONLINE·CALIBRATED FOR 2026·TOTAL COST: £0.00
CALCULATOR 01 · ECOMMERCEONLINE
Break-even ROAS Calculator
Three inputs — price, costs, fees — and out comes the line your ads have to clear, plus the growth target worth aiming at. The most important number in eCommerce advertising, and most brands have never calculated it.
SELLING PRICE£64.00
COST OF GOODS + FEES£38.20
BREAK-EVEN ROAS2.48x
3 INPUTS<60 SECONDSFREE · NO EMAIL GATE
Open calculator →
CALCULATOR 02 · LEAD GENONLINE
Lead Gen CPA Calculator
Map the value of every funnel stage — lead, conversation, sale — and get the maximum cost-per-lead your campaigns can pay before a job stops being worth winning. The ceiling every lead campaign should be priced against.
AVG SALE VALUE£1,400
LEAD → SALE RATE22%
MAX COST-PER-LEAD£61.60
FULL FUNNEL<90 SECONDSFREE · NO EMAIL GATE
Open calculator →
CALCULATOR 03 · B2BONLINE
B2B Growth Calculator
Set your revenue target and describe your funnel — get the leads, MQLs and SQLs you need each month, your max cost-per-lead and the ad budget ceiling that keeps LTV:CAC healthy. Your number, reverse-engineered.
NEW REVENUE TARGET / MO£50,000
AVG CONTRACT VALUE£12,000
MAX COST-PER-LEAD£336
FULL PIPELINE<2 MINUTESFREE · NO EMAIL GATE
Open calculator →
CALCULATOR 04 · RETENTIONONLINE
Customer LTV Calculator
Turn order value, repeat rate and retention into what a customer is really worth — and the most you can spend to acquire one before the maths stops working in your favour.
AVG ORDER VALUE£65
RETENTION35%
CUSTOMER LTV£138
RETENTION-BASED<90 SECONDSFREE · NO EMAIL GATE
Open calculator →
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TELL US WHAT YOU'D CALCULATE — IF THE MATHS IS USEFUL, WE'LL BUILD IT
/ 01 · WHY THE MATHS COMES FIRST
Targets without maths are just vibes.
REASON 01
Benchmarks lie to you
"A good ROAS is 4x" means nothing. At 80% margin 2x is a goldmine; at 20% margin 4x loses money. Only your numbers count.
REASON 02
Agencies exploit the gap
If you don't know your break-even, any performance report can be made to look good. These calculators make you harder to fool — including by us.
REASON 03
Scaling needs a ceiling
Knowing your max CPA or break-even ROAS turns "can we spend more?" from a gamble into a yes/no the data answers.
Prefer we run the numbers for you?
The free growth plan does the full working — your market, your competitors, your break-even and the channel mix that fits. Delivered in under 3 hours.
Get your free growth plan →NO OBLIGATION · NO SALES SEQUENCE · JUST THE DATA