Free tool

Ad budget calculator

Work backwards from the revenue you want to the budget that could plausibly get you there.

Fill the fields above - the result updates as you type.

How to use this honestly

Budget = revenue goal ÷ realistic ROAS. The trap is the word "realistic": use the blended ROAS you have actually achieved, not the one your best week hit. New accounts should also budget for a learning period - the first weeks of a campaign usually run below your eventual average. And remember the breakeven rule: if the ROAS you plugged in is below 100 ÷ your margin %, hitting your revenue goal still loses money.

Stop calculating. Start seeing it live.

Connect your ads and your store. Magneety shows what actually makes money - and fixes what doesn't, when you say go.

Start free - no credit card 14-day trial · from €50/month after · cancel anytime