ROAS Calculator: is your ad spend
actually making money?
A margin-aware ROAS calculator: work out your return on ad spend, cost per acquisition and: the number most tools skip, whether you’re actually profitable after margin.
Gross margin = what’s left after product/COGS cost, before ad spend. It’s the number that decides whether a given ROAS is actually profitable.
Want a higher, profitable ROAS?
We’ll audit your campaigns and show where the profit is leaking, no obligation.
What is ROAS?
Return on ad spend (ROAS) is how much revenue each rupee of advertising brings back. The formula is deliberately simple: ROAS = revenue from ads ÷ ad spend. Spend ₹1,00,000 and earn ₹4,00,000 from those campaigns, and your ROAS is 4x, or 400%.
It’s the headline number every ad platform puts in front of you, and on its own it can be dangerously misleading. A 4x ROAS looks healthy, but if your gross margin is 25% that campaign is losing money. That’s why the calculator above also works out your break-even ROAS and your real gross profit after margin, not just the vanity multiple.
How to calculate ROAS
- Total the revenue attributable to the campaign or channel over a set period.
- Total the ad spend for the same campaign and period.
- Divide revenue by spend — that’s your ROAS, as a multiple (3.5x) or a percentage (350%).
- Compare it to your break-even ROAS (1 ÷ gross margin). If your ROAS is below break-even, the campaign loses money even though the platform reports a positive return.
What is a good ROAS?
There’s no universal ‘good’ ROAS. It depends entirely on your gross margin, because that sets your break-even point:
- 70% margin → break-even ≈ 1.4x, so 3x is strongly profitable.
- 50% margin → break-even 2x, so 3x is healthy.
- 40% margin → break-even 2.5x.
- 25% margin → break-even 4x, so a 3x ROAS is actually a loss.
Always judge ROAS against your own break-even, never an industry benchmark pulled from a business with a different cost structure.
ROAS vs profitability: the number most tools skip
ROAS measures revenue, not profit. To know whether a campaign actually makes money, subtract product cost (COGS) and then ad spend: gross profit after ad spend = (revenue × gross margin) − ad spend. When that figure is positive you’re winning; when it’s negative, a great-looking ROAS is quietly draining cash.
A worked example. Spend ₹1,00,000, earn ₹4,00,000: a 4x ROAS. At 40% margin, gross profit is ₹4,00,000 × 0.40 − ₹1,00,000 = ₹60,000 profit. At 20% margin it’s ₹80,000 − ₹1,00,000 = a ₹20,000 loss — identical ROAS, opposite outcome. That gap is the whole point of measuring to margin.
This is exactly how our performance marketing team runs paid media, every campaign tied to a profit target, not a ROAS screenshot. For planning spend, pair this with our guide to digital marketing pricing in India.
ROAS calculator, questions, answered.
ROAS = revenue from ads ÷ ad spend. If you spend ₹1,00,000 and those campaigns bring in ₹4,00,000, your ROAS is 4x (or 400%). It’s a ratio of revenue to spend, not profit, which is why margin matters.
There’s no universal number. A good ROAS depends on your gross margin. Your break-even ROAS is 1 ÷ gross margin: at 25% margin you break even at 4x, at 50% margin at 2x. Anything comfortably above your own break-even is good; a benchmark from another business is meaningless.
Break-even ROAS is the return at which a campaign covers its own cost after product margin, calculated as 1 ÷ gross margin. Below it you lose money even when the ad platform reports a positive return; above it you make money. The calculator shows yours automatically.
Because ROAS ignores product cost. A 4x ROAS on a thin 20% margin means every ₹1,00,000 of spend returns ₹4,00,000 in revenue but only ₹80,000 in gross profit: a ₹20,000 loss after spend. Always check gross profit after ad spend, not the ROAS multiple alone.
Ready to replace guesswork with a growth engine?
Book a 30-minute strategy call. We’ll show you exactly where your funnel is leaking, before you spend a dollar.