# What ROAS is 25% ACoS? (Quick Conversion + Cheat Sheet) > 25% ACoS equals a 4:1 ROAS (4.0 ROAS). See the math, a full conversion cheat sheet from 5% to 100% ACoS, and how to use this in your Amazon campaign management. Amazon Advertising Metrics # What ROAS is 25% ACoS? (Quick Conversion + Cheat Sheet) By VEONIB Team • Updated July 4, 2026 • 5 min read **Quick Answer:** 25% ACoS = 4.0 ROAS That is a **4:1 return ratio** — you earn $4 in revenue for every $1 spent on advertising. **Formula:** ROAS = 100 ÷ ACoS% = 100 ÷ 25 = **4.0** If you manage Amazon PPC campaigns, you’ve likely seen both ACoS and ROAS used interchangeably — or had to quickly convert between them for reporting. One of the most common conversion questions is: _“What ROAS is 25% ACoS?”_ This guide gives you the answer, the math behind it, a full conversion cheat sheet, and practical tips for using this conversion in campaign management. ## 1\. Quick Answer: 25% ACoS = 4:1 ROAS The short answer is straightforward: 25% ACoS = 4.0 ROAS = 4:1 Return Ratio This means for every **$1 you invest** in Amazon advertising, you generate **$4 in revenue**. Whether 4:1 ROAS is good depends on your product margins. A 4:1 ROAS means ad costs consume 25% of revenue, so you need a profit margin above 25% for the campaign to be profitable. If you are new to these metrics, see our beginner-friendly guide: [How to Calculate ACOS on Amazon](/how-do-you-calculate-acos-on-amazon.html). For a broader comparison of the two metrics, check [ACoS vs ROAS explained](/how-is-acos-different-from-roas.html). ## 2\. The Math: ROAS = 1 / ACoS The conversion between ACoS and ROAS follows a simple reciprocal relationship: ROAS = 1 ÷ (ACoS as a decimal) Step-by-step for 25% ACoS: 1. Convert 25% to a decimal: **25 ÷ 100 = 0.25** 2. Divide 1 by that decimal: **1 ÷ 0.25 = 4.0** 3. That’s your ROAS: **4.0** (also written as 4:1 or 400%) You can also use the simplified formula: ROAS = 100 ÷ ACoS% For 25%: 100 ÷ 25 = 4.0. Same result, one less step. To go the other direction (ROAS back to ACoS): ACoS = (1 ÷ ROAS) × 100 For 4.0 ROAS: (1 ÷ 4.0) × 100 = 25% ACoS. For a deeper explanation of why these metrics are inverse, read [Is ACoS the same as ROAS?](/is-acos-the-same-as-roas.html) ## 3\. Full Conversion Cheat Sheet Bookmark this table for quick reference. The highlighted row is the 25% ACoS conversion: ACoS (%) ROAS (Ratio) ROAS (Decimal) Revenue per $1 Assessment 5% 20:1 20.0x $20 Excellent 10% 10:1 10.0x $10 Excellent 12.5% 8:1 8.0x $8 Very Good 15% 6.67:1 6.7x $6.67 Very Good 20% 5:1 5.0x $5 Good **25%** **4:1** **4.0x** **$4** **Healthy Benchmark** 30% 3.33:1 3.3x $3.33 Moderate 33% 3:1 3.0x $3 Moderate 40% 2.5:1 2.5x $2.50 Check Margins 50% 2:1 2.0x $2 High Cost 100% 1:1 1.0x $1 Break-Even or Loss ## 4\. How to Use This in Campaign Management Knowing that 25% ACoS equals 4:1 ROAS is useful, but applying it to real campaign decisions is where the value lies. ### Setting Target ROAS Amazon allows you to set a **Target ROAS** for your campaigns. If you currently manage campaigns using ACoS targets, convert them to ROAS: - Target ACoS of 20% = Target ROAS of 5.0 - Target ACoS of 25% = Target ROAS of 4.0 - Target ACoS of 33% = Target ROAS of 3.0 ### Understanding Profitability at 25% ACoS A 25% ACoS (4:1 ROAS) is a common benchmark, but profitability depends on where it sits relative to your margin: - **Margin > 25% (e.g., 40%):** Profitable. You keep 15% after ad costs. - **Margin = 25%:** Break-even. All profit goes to ads. - **Margin < 25% (e.g., 15%):** Losing money. You need to lower ACoS. ### When to Push Beyond 25% ACoS Sometimes letting ACoS rise (and ROAS drop) is the right move: - **Product Launches:** Higher ACoS (lower ROAS) during launch can build organic ranking that pays off long-term. - **Clearing Inventory:** Accepting a 40% ACoS (2.5 ROAS) to clear aged stock may be better than paying long-term storage fees. - **High-Margin Products:** If your margin is 60%, a 25% ACoS is very comfortable — you may want to actually increase spend to capture more market share. For more on using ACoS in campaign strategy, see [How to Calculate ACOS on Amazon](/how-do-you-calculate-acos-on-amazon.html). ## 5\. Frequently Asked Questions ### What ROAS is 25% ACoS? 25% ACoS equals 4.0 ROAS (4:1 ratio). You earn $4 in revenue for every $1 in ad spend. Formula: 100 ÷ 25 = 4.0. ### How do you convert ACoS to ROAS? Use the formula ROAS = 100 ÷ ACoS%. For 25% ACoS: 100 ÷ 25 = 4.0. For 20% ACoS: 100 ÷ 20 = 5.0. ### Is 25% ACoS good on Amazon? 25% ACoS is a healthy benchmark for many categories. It corresponds to 4:1 ROAS. Whether it is good depends on your profit margin — your ACoS must be below your margin to be profitable. ### What is 20% ACoS in ROAS? 20% ACoS equals 5.0 ROAS (5:1). You earn $5 for every $1 in ad spend. Formula: 100 ÷ 20 = 5.0. ### What is 50% ACoS in ROAS? 50% ACoS equals 2.0 ROAS (2:1). You earn $2 for every $1 in ad spend. This is often break-even or a loss depending on your product margin. ### Boost Your Product Conversions with AI Video VEONIB creates professional e-commerce product videos from any product URL in under 60 seconds. Perfect for Amazon listings, EBC content, and social media ads. Give your products the visual edge they deserve. [Start Creating Free →](https://veonib.com) ### Related Guides [How to Calculate ACOS on Amazon](/how-do-you-calculate-acos-on-amazon.html) [How is ACOS different from ROAS?](/how-is-acos-different-from-roas.html) [Is ACOS the same as ROAS?](/is-acos-the-same-as-roas.html)