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
- Ad Spend Calculator — Allocate Budget by ROAS or Plan from Revenue — 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.
Plan and optimize ad spend
Choose Channel optimizer when you have a total budget and ROAS per channel. Choose Revenue → ad budget when you want a suggested monthly spend from revenue and ad spend % of revenue.
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For ROAS math alone see ROAS Calculator; for cross-channel comparison see Marketing Channel ROI Comparator.
Frequently asked questions
How is the channel optimizer different from the budget planner?
The optimizer splits a fixed total budget across channels by ROAS. The revenue → ad budget mode starts from revenue and ad spend % to suggest monthly spend and expected revenue.
Is this ad spend calculator free?
Yes. Free with no signup.