Facebook Ads Calculator
Forecast your Facebook campaign conversions, cost per acquisition, and ROAS before you spend.
Required Metrics
Optional Metrics
For deeper analysisReach & Clicks
Campaign Results
Cost Per Acquisition
$28.99
for each conversion from your $2,000.00 budget
Revenue & ROAS
How We Calculate Your Facebook ROAS
Here's how we estimate your Facebook campaign profitability:
Monthly Budget
Total Facebook ad spend for the month
Conversions
Reach × CTR × Conversion Rate
ROAS
Revenue ÷ Budget = Return on Ad Spend
Tips & Insights
- 💡 Your CPA ($28.99) is below your order value ($80.00), meaning each conversion is profitable. Scale carefully and monitor as budgets increase.
Frequently Asked Questions
How much do Facebook ads cost?
Facebook ad costs vary widely by industry, audience, and time of year. Average CPMs are $8–$18, with CPC typically ranging from $0.50–$3.00 for most industries. B2B and high-competition verticals (finance, insurance, legal) can see CPCs of $5–$10+. Costs spike during Q4 holiday season by 20–40% as more advertisers compete for inventory.
What's a good ROAS on Facebook?
Most advertisers aim for a minimum ROAS of 2×–3× to be profitable after accounting for product costs and overheads. eCommerce businesses typically target 3×–5× ROAS. If your gross margin is 50%, you need at least 2× ROAS to break even on ad spend. Use our ROAS Calculator to find your specific break-even ROAS.
Facebook vs Google Ads: which has better ROI?
Facebook excels at awareness and demand generation — reaching people before they're searching. Google captures existing demand through search intent. For direct response and eCommerce, Facebook often delivers lower CPAs for B2C. Google Search typically wins for high-intent products where people are actively searching. Most mature advertisers use both: Google for bottom-funnel, Facebook for upper/mid-funnel.
What's the minimum daily budget for Facebook ads?
Facebook's technical minimum is $1/day, but this won't deliver meaningful results. For performance campaigns, most advertisers need at least $30–$50/day per ad set to gather enough data for Meta's algorithm to optimize. The learning phase requires 50 optimization events within 7 days — budget accordingly based on your expected CPA.
How can I lower my Facebook CPM?
1) Improve relevance score: engaging ads with high CTR are rewarded with lower CPMs. 2) Broaden targeting: let Meta's algorithm find converters within a larger pool. 3) Use Advantage+ Audiences: Meta's automated targeting often outperforms manual interest targeting. 4) Test Reels placements: newer placements often carry lower CPMs than traditional feed. Use our CPM Calculator to track changes over time.
What are the best Facebook ad formats in 2025?
Reels Ads currently offer the lowest CPMs on the Meta platform and are best for awareness. Carousel Ads excel for eCommerce (showcase multiple products). Lead Ads are best for lead generation (native form, no landing page required). Dynamic Ads retarget users who viewed products with personalized creatives. For most advertisers, testing single image + Reels against carousel is a good starting point.
How do I calculate Facebook Ads ROAS?
ROAS = Revenue from Ads ÷ Ad Spend. If you spent $2,000 and generated $6,000 in revenue, your ROAS is 3×. In Meta Ads Manager, check the "Purchase ROAS" column for campaign-level tracking. Make sure your pixel is correctly attributing conversions. Use our ROAS Calculator and CTR Calculator for detailed analysis.