Free Ad Spend Optimizer — Allocate Budget by Channel (ROAS)

Enter total ad budget and ROAS per channel. Get a recommended budget split and reallocation suggestions (e.g. move $X from Meta to Google) to maximize revenue. Free calculator.

By Growthegy Team

Who is this for? Best for ecommerce operators working on marketing analytics: Allocate ad budget by ROAS per channel. Recommended split and reallocation suggestions (e.g. move $X from Meta to Google).

Related tools

Citable benchmarks

Average ecommerce conversion rate is often ~2–3% (varies widely by industry and traffic mix).

Source: IRP Commerce — Ecommerce Market Data (Jan 2026)

Key takeaways

  • Free Ad Spend Optimizer — Allocate Budget by Channel (ROAS) — focus on one metric or lever at a time; validate with data before scaling spend.
  • Pair reading with free Growthegy calculators (LTV, ROAS, break-even, pricing) to turn ideas into numbers.
  • Bookmark growthegy.com/tools/ and run the Business Strategy Quiz when you need a prioritised roadmap.

What is the Ad Spend Optimizer?

It suggests how to split a fixed ad budget across channels (Meta, Google, TikTok, etc.) using each channel’s ROAS. You get a recommended allocation and a reallocation tip (e.g. “If you move $500 from Meta to Google, projected revenue change: +$X”).

Enter your total monthly ad budget and ROAS per channel. The tool allocates more budget to higher ROAS channels and shows projected revenue. Use the reallocation suggestion as a direction to test, not a one-size-fits-all rule.

Ad Spend Optimizer

Enter your total monthly ad budget and ROAS per channel. Get a recommended budget split and reallocation suggestions to maximize revenue.

Total projected revenue (at recommended split)$26,307
Meta: $3,333 → ~$8,333 revenue33% of budget
Google: $4,267 → ~$13,653 revenue43% of budget
TikTok: $2,400 → ~$4,320 revenue24% of budget

Reallocation suggestion

If you move $500 from TikTok to Google, projected revenue change: +$700

How to use your results

Scale winning channels gradually and watch for saturation. Use our Marketing Channel ROI Comparator for full ROAS/ROI/CAC comparison and ROAS Calculator for single-channel numbers. See the tools hub for more.

FAQ

How does the recommended budget split work?
We allocate your total budget across channels in proportion to each channel’s ROAS. Higher ROAS channels get a larger share so that expected revenue is maximized for the same total spend.
Should I always move budget to my highest ROAS channel?
Not blindly. Scaling one channel can push up CAC or hit saturation. Use this tool to see the direction of reallocation, then test moves incrementally and track actual results.
Is this ad spend optimizer free?
Yes. Free with no signup. For more channel comparison see Marketing Channel ROI Comparator and ROAS Calculator.

People also ask

Is the Ad Spend Optimizer free to use?

Yes. Core Growthegy tools run in your browser with no payment for standard flows. Model scenarios without signup on most calculators, then explore growthegy.com/tools/ for related utilities when you need the next metric.

How should I use Ad Spend Optimizer results?

Treat outputs as directional, then confirm with your analytics and finance data. Change one input at a time, note assumptions, and pair numbers with margin or payback checks from linked calculators when spend is involved.

What should I do after Ad Spend Optimizer?

Save your baseline, pick one improvement, and retest weekly. For a broader plan, take the Business Strategy Quiz and open the customer-metrics or profitability hubs for the next metrics to watch.

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