Select a platform and enter your budget, then click calculate.
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What This Calculator Does
This social media ad budget calculator helps marketers, small business owners, and media buyers estimate the expected performance of their ad spend across major social platforms. It calculates estimated impressions, clicks, conversions, reach, cost per click (CPC), cost per conversion, CPM, and frequency based on your budget and platform-specific 2026 benchmarks for Facebook, Instagram, TikTok, LinkedIn, YouTube, and X (Twitter).
The Formula
CPM (cost per mille) is the cost per 1,000 impressions. Dividing your budget by CPM and multiplying by 1,000 gives estimated impressions. Clicks are derived from impressions multiplied by the click-through rate (CTR). Conversions are clicks multiplied by the conversion rate. Reach is estimated at approximately 65% of impressions, and frequency is total impressions divided by reach.
Step-by-Step Example
Select a platform
Choose Facebook with a $9.50 average CPM, 1.2% CTR, and 2.5% conversion rate (2026 benchmarks).
Enter your budget
Set a $3,000 monthly ad budget for a 30-day campaign.
Calculate impressions
($3,000 / $9.50) x 1,000 = 315,789 estimated impressions.
Derive clicks and conversions
315,789 x 1.2% = 3,789 clicks. 3,789 x 2.5% = 95 conversions. CPC = $0.79. Cost per conversion = $31.58.
Real-World Use Cases
Campaign Budget Planning
Estimate how many conversions your budget can realistically generate before launching a campaign, helping you set realistic expectations.
Platform Comparison
Compare the estimated performance of the same budget across Facebook, TikTok, LinkedIn, and other platforms to identify the best fit for your goals.
Client Proposals
Agency professionals can use projected performance data to build compelling client proposals with realistic KPI forecasts.
Common Mistakes to Avoid
Using the same CPM estimate for all audiences. CPM varies significantly by targeting, audience size, placement, and time of year. Holiday CPMs can increase 50% to 200%.
Assuming all impressions are equal across platforms. A LinkedIn impression from a B2B decision-maker has a very different value than a TikTok impression from a casual scroller.
Not accounting for creative fatigue. Ad performance typically declines after 7 to 14 days as audiences see the same creative repeatedly.
Ignoring platform-specific auction dynamics. Setting a budget too low on competitive platforms like LinkedIn may result in very limited delivery.
Treating benchmark CTRs as guaranteed. Your actual CTR depends on ad quality, targeting, offer, and creative execution.
Frequently Asked Questions
Accuracy and Disclaimer
This calculator uses 2026 industry average benchmarks for estimating performance. Actual results depend on ad quality, targeting, audience, creative, landing page experience, and market conditions. Use these estimates for planning purposes, not as guaranteed outcomes.
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