Marketing Math Calculator

Pressure-test your growth plan before you bet the budget on it.

Most businesses set an ad budget and a growth goal that were never actually connected. This tool walks the real math between true customer cost, customer value, budget reality, overhead, and cash.

Your current numbers

Monthly ad spendAverage cost per lead (CPL)Lead to qualified rate

Of the leads you get, what share are genuinely qualified?Qualified to customer close rate

Of your qualified leads, what share become paying customers?How do customers pay you?This shapes the right questions to ask about customer value.Average purchase valueWhat a customer pays you, on average, for that one purchase.Contribution margin %

Revenue minus variable costs, before fixed overhead. Add this to see the profit-based ratio.

Your goal

New revenue goal from adsHow much new revenue do you want paid ads to drive?Over what window?

Optional depth

Sharpens the result. Skip if you do not have it.

Total monthly fixed costsOverhead, salaries, software. Leave blank to skip.Do your ad platforms see what happens after the lead?Closed-deal data should flow back into Google and Meta so they optimize for customers, not form fills.

Cash and working capital

Optional. A directional estimate of the cash this level of spend ties up.

How long is your sales cycle?Sales cycle length (months)Leave blank to skip this section.