Google Ads Budget Calculator
Set a monthly Google Ads budget and see the daily cap Google will actually enforce, plus what revenue and order volume it should produce at your target ROAS.
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How this is calculated
Google Ads bills against a daily budget, not a monthly one, so the monthly figure is divided by the average number of days in a month (30.44) to get the daily cap Google will target. Estimated revenue is monthly budget × target ROAS, and estimated orders is that revenue divided by your average order value.
This is a planning estimate, not a guarantee — actual results depend on competition, targeting, and how close your account currently is to your target ROAS. Use the Target ROAS calculatorfirst if you haven’t set that number yet.
FAQ
Why is the daily budget different from monthly budget ÷ 30?
Google Ads uses the actual average days per month (30.44) for its daily budget calculations, and can spend up to roughly double your daily budget on any single day as long as the monthly average stays on target.
What target ROAS should I use?
Use the ROAS from the Target ROAS calculator, based on your actual product margin — not a round number that feels right.
Does this account for different margins across products?
No — this gives one blended estimate. For multi-product accounts, run this per product category using each one's own target ROAS for a more accurate picture.
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