Turn ad spend into growth signals for scaling. Track baseline versus current performance in minutes. Download reports, compare scenarios, and justify every budget increase.
Enter baseline and current performance. Advanced costs improve profit estimates.
Use this sample to test the tool quickly.
| Period | Ad Spend | Revenue | Orders | Other Costs |
|---|---|---|---|---|
| Baseline (Example) | $5,000.00 | $15,000.00 | 300 | $400.00 |
| Current (Example) | $7,000.00 | $21,000.00 | 390 | $550.00 |
Example margin: 45%. Variable cost per order: 0. Attribution window: 7 days.
Revenue ÷ Ad Spend(Revenuecurrent − Revenuebaseline) ÷ (Spendcurrent − Spendbaseline)(Δ Spend ÷ Spendbaseline) × 100(Δ Revenue ÷ Revenuebaseline) × 1001 ÷ Gross Margin(Revenue × Margin) − Spend − Other Costs − (Variable Cost × Orders)Growth ROAS becomes meaningful when baseline and current windows match in length and intent. A 30‑day versus 30‑day comparison keeps seasonality noise lower than mixed ranges. Keep the attribution window constant, for example 7 days, so revenue is credited under the same rules. If spend is unchanged, the incremental calculation is undefined and the tool flags that edge case.
Total ROAS can stay flat while incremental efficiency shifts. Using the sample table, baseline spend 5,000 and revenue 15,000 gives ROAS 3.0. Current spend 7,000 and revenue 21,000 also gives ROAS 3.0, yet Growth ROAS is based on deltas: (21,000−15,000)/(7,000−5,000)=3.0. When Growth ROAS drops below your threshold, scaling can reduce profit even if total ROAS looks healthy.
Break-even ROAS provides a profitability floor tied to gross margin. With a 45% margin, break-even is 1/0.45 = 2.22. If Growth ROAS is above 2.22, each incremental currency unit of spend is expected to contribute positive gross profit before fixed overhead. If margin is uncertain, run sensitivity checks by testing 35%, 45%, and 55% to see how the scaling signal changes.
The calculator lets you add other costs and variable cost per order to reduce overstated gains. CPA is spend divided by orders, and AOV is revenue divided by orders; pairing both highlights whether growth comes from cheaper acquisition or higher basket size. If variable cost is 2 per order and orders rise by 90, that adds 180 of cost, tightening the profit delta.
Use the planner to translate a target Growth ROAS into a revenue requirement. With planned incremental spend of 1,000 and a target of 2.5, required incremental revenue is 2,500. Compare expected Growth ROAS to break-even to decide whether to scale now, improve conversion rate, or shift budget to higher‑intent channels. Export CSV to archive weekly results, and PDF for stakeholder reviews. Track spend growth and revenue growth percentages alongside Growth ROAS to understand pacing. A common cadence is weekly for active campaigns and monthly for executive summaries, using the same currency and labels across teams and vendors.
It measures incremental efficiency: the change in revenue divided by the change in ad spend between two periods. It answers whether the extra budget produced enough additional revenue to justify scaling.
Total ROAS uses totals in one period, while Growth ROAS uses differences across periods. Total ROAS can stay stable even when incremental returns are falling, which makes Growth ROAS better for scaling decisions.
If the two periods have different lengths, promotions, tracking settings, or attribution windows, the deltas mix multiple effects. It is also undefined when spend does not change, and unstable when the spend change is very small.
Use gross margin as a starting point. Break-even ROAS is 1 divided by margin, so a 40% margin implies 2.50. Add additional overhead or fulfillment costs to set a higher internal target for safer scaling.
They reduce inflated profit estimates. Shipping, payment fees, or packaging rise with volume, while tools or agency retainers may be fixed. Including them helps you compare profit deltas, not just revenue deltas.
Export CSV for analysis and trend tracking, and PDF for sharing a snapshot with stakeholders. Weekly exports work well during active testing, while monthly exports suit budget reviews and forecasting.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.