Free marketing calculators.
Five calculators for the numbers that decide whether growth is profitable. Free, no sign-up, and each one shows its formula.
The short answer
Wadabu's free marketing calculators work out the five numbers every consumer-brand startup should know: ROAS and MER, CAC and payback, LTV and LTV:CAC, break-even CPA, and a monthly marketing budget. Each runs in the browser, needs no sign-up, and shows the formula behind the answer.
Which calculator should you use?
| Question | Calculator |
|---|---|
| How much can I pay in ads to win an order? | Break-even CPA |
| How much should I spend on marketing each month? | Marketing budget |
| Are my ads, and my marketing overall, profitable? | ROAS, break-even ROAS and MER |
| What does a new customer cost, and when is it paid back? | CAC and payback |
| What is a customer worth over time? | LTV and LTV:CAC |
In what order should a startup use them?
- Break-even CPA first, because it comes straight from your order economics.
- Marketing budget next, to size spend to revenue.
- ROAS and MER every month, to check the spend is working.
- CAC and LTV once you have a few months of customers, to decide how hard to push.
The one number that ties them together is MER: total revenue divided by total marketing spend. Read why MER beats ROAS.
Frequently asked questions
Senior team, no hand‑offs
Rated 5.0 on Clutch
Published pricing, no surprises
Are Wadabu's marketing calculators free?
Yes. All five calculators are free, need no sign-up, and run in the browser, so nothing entered is stored or sent.
Which marketing metrics should a startup track?
A consumer-brand startup should track break-even CPA, ROAS, MER, CAC and payback, and LTV. MER, total revenue divided by total marketing spend, is the single best check on whether marketing as a whole is profitable.
What is the most important marketing number for a startup?
MER is the most useful single number, because it compares total revenue with total marketing spend and can't be inflated by ad platform attribution. Channel metrics like ROAS and CPA then show where to move budget.
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