The Social Media Ad Spend Optimizer is a free, accurate online tool designed to help you optimize your social media strategy in seconds. Just enter total monthly budget ($), avg revenue per customer ($), facebook cpa ($), facebook conv. rate (%), instagram cpa ($), instagram conv. rate (%), tiktok cpa ($), tiktok conv. rate (%), google cpa ($), google conv. rate (%) and instantly see facebook budget, instagram budget, tiktok budget, google budget, facebook roas, instagram roas, tiktok roas, google roas. Algorithms reward consistency and data-driven choices. Knowing your engagement, reach, or growth rate helps you double down on what is working and cut what is not. This calculator gives you the same metrics agencies and creators rely on. Under the hood, the tool applies the standard formula: Optimal Allocation = Platform ROAS × Budget Weight / Total ROAS. You can see exactly how the result is derived, which is especially useful for students, professionals, and anyone who wants to learn rather than just get an answer. CalcPlanet builds every calculator to be fast, mobile-friendly, and free, with no signup required. We test results against worked examples and reference implementations so you can rely on what you see. Enter your values above to get an instant, accurate social media ad spend optimizer result, then explore the FAQs and examples below for deeper context.
The Social Media Ad Spend Optimizer calculates the optimal budget allocation across Facebook, Instagram, TikTok, and Google based on each platform's ROAS performance.
Enter your total budget, average revenue per customer, and each platform's CPA and conversion rate. The optimizer allocates budget proportionally to ROAS.
Optimal Allocation = Platform ROAS × Budget Weight / Total ROAS
const budget=parseFloat(inputs.total_budget)||0;const fbCPA=parseFloat(inputs.fb_cpa)||5;const igCPA=parseFloat(inputs.ig_cpa)||4;const ttCPA=parseFloat(inputs.tt_cpa)||3;const gCPA=parseFloat(inputs.google_cpa)||6;const fbConv=(parseFloat(inputs.fb_conv)||3)/100;const igConv=(parseFloat(inputs.ig_conv)||4)/100;const ttConv=(parseFloat(inputs.tt_conv)||5)/100;const gConv=(parseFloat(inputs.google_conv)||4)/100;const avgRev=parseFloat(inputs.avg_revenue)||50;const fbROAS=fbConv>0?(avgRev*fbConv)/fbCPA:0;const igROAS=igConv>0?(avgRev*igConv)/igCPA:0;const ttROAS=ttConv>0?(avgRev*ttConv)/ttCPA:0;const gROAS=gConv>0?(avgRev*gConv)/gCPA:0;const totalROAS=fbROAS+igROAS+ttROAS+gROAS;const fbAlloc=totalROAS>0?budget*(fbROAS/totalROAS):budget/4;const igAlloc=totalROAS>0?budget*(igROAS/totalROAS):budget/4;const ttAlloc=totalROAS>0?budget*(ttROAS/totalROAS):budget/4;const gAlloc=totalROAS>0?budget*(gROAS/totalROAS):budget/4;return{facebook_budget:fbAlloc,instagram_budget:igAlloc,tiktok_budget:ttAlloc,google_budget:gAlloc,facebook_roas:fbROAS,instagram_roas:igROAS,tiktok_roas:ttROAS,google_roas:gROAS}
With a $5,000 budget, if TikTok has the best ROAS (0.83x), it would receive the largest allocation (~
Result: See live result above.
Allocate based on ROAS, not equally. Put more budget into platforms generating the highest return per dollar spent.
A ROAS of 3x or higher is considered good. This means $3 in revenue for every
Start with 2-3 platforms where your audience is most active, optimize performance, then expand to others.
Review and reallocate monthly based on performance data. Be prepared to shift budget quickly during seasonal changes or campaign launches.
CPA (Cost Per Acquisition) is how much you pay to acquire one customer. Lower CPA means more efficient advertising spend.
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