Ad budget = (conversions needed ÷ conversion rate) × CPC. Work backwards from your goal: to hit $50,000 at an $80 order value you need 625 orders; at a 2% conversion rate that is 31,250 clicks; at a $1.20 CPC you need a $37,500 budget. Enter your numbers below.
Work out the budget you need
Revenue you want this campaign to generate.
Revenue per conversion.
Share of clicks that convert.
Average CPC for the channel.
Used to work out a daily budget.
—Total budget
—Daily budget
—Conversions needed
—Clicks needed
—Implied CPA
—Implied ROAS
Fill in the four required fields to size your budget.
How it works
A budget is not a guess, it is arithmetic run backwards from the goal. The calculator chains four steps:
1. Conversions needed = revenue goal ÷ average order value. 2. Clicks needed = conversions ÷ conversion rate. 3. Budget = clicks × CPC. 4. Implied CPA = budget ÷ conversions, and implied ROAS = revenue goal ÷ budget.
The implied ROAS is the reality check. If it lands below your break-even ROAS, the plan loses money no matter how well it is executed — the fix is a better conversion rate, a higher order value, or a cheaper click, not a bigger budget.
Frequently asked questions
How much should I spend on ads?Enough to buy the clicks your goal requires, and no more than your margin allows. This calculator gives the first number; our break-even ROAS calculator gives the ceiling. If the two conflict, the goal itself is unrealistic at your current economics.
What conversion rate should I assume?Use your own historical data wherever possible. If you have none, a 1-3% site-wide ecommerce conversion rate is a common starting assumption, but treat the first campaign as a paid experiment to learn your real rate.
Why is my implied ROAS below break-even?Because the maths does not work at those inputs: the clicks needed to hit your revenue goal cost more than the goal returns. Improve conversion rate or order value, or lower CPC with better targeting. Increasing the budget only scales the loss.
Should the budget include creative and agency fees?This calculator sizes media spend only. Add production, tooling and agency costs on top when you build the full plan, and include them in CAC when you judge whether the channel pays.
Is this ad budget calculator free?Yes. It is completely free, needs no signup, and all calculations happen in your browser.
Every channel needs a budget; email mostly needs a list. Bluey Email charges per email sent, not per contact stored, so the audience you buy with ads today costs little to remarket to tomorrow. Try our break-even ROAS calculator and CPC/CPM/CPA calculator, or see Bluey’s pricing →.