Ad Spend as % of Revenue

Calculate ad spend as a percentage of revenue. Useful for tracking marketing efficiency and setting budgeting benchmarks.

Use this calculator when you need a fast, reliable answer without opening a spreadsheet. Enter your figures below and press Calculate. PercentNinja shows the key outputs you typically need for pricing decisions, VAT checks, ecommerce payouts or ad reporting.

When to use this

• Monitoring ad efficiency (CTR, CPC, CPM, eCPM) across campaigns
• Setting KPIs and break-even targets before scaling spend
• Comparing performance between channels using consistent metrics

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Worked examples