ROAS Calculator
Free, no signup. Works forward — revenue and spend in, ROAS out — and in reverse: start from a target ROAS and get the most you can spend.
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Enter revenue and ad spend to see your ROAS.
Return on ad spend, defined.
ROAS measures how much revenue your ads generated for every dollar you spent on them. The formula is the simplest one in advertising:
ROAS = revenue ÷ ad spend
It is a gross number: it counts the revenue your ads drove and the money you paid Meta, and nothing else. Product costs, shipping, and fees come later — that distinction is the whole ROAS-vs-ROI question in the FAQ below.
Forward and in reverse.
Forward: your ads drove $4,000 of revenue on $1,000 of ad spend. 4,000 ÷ 1,000 = a 4.00 ROAS — every $1 of spend returned $4.
Reverse: you expect $5,000 of revenue and need a 4.0 ROAS to make the campaign worth running. 5,000 ÷ 4 = $1,250 — spend more than that and the target is out of reach before the first impression serves. That is what the “plan spend from a target ROAS” mode above computes.
What’s a good ROAS?
It depends on your margins — a 4.0 ROAS can lose money on thin margins while a 2.0 prints on fat ones, so any benchmark that ignores your unit economics is noise. We break down what counts as a good Facebook ROAS by margin profile, and the break-even ROAS calculator does the margin math for your own numbers.
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- What is a good ROAS for Facebook ads?
- There is no universal number — it depends on your margins. A 4.0 ROAS can lose money on thin margins while a 2.0 prints on fat ones. Work out your own floor with the break-even ROAS calculator: it turns your order value, costs, and fees into the exact ROAS your ads must clear.
- ROAS vs ROI — what's the difference?
- ROAS is gross revenue divided by ad spend — it ignores every other cost. ROI nets out all costs (product, shipping, fees, fixed costs) before dividing. A campaign can show a healthy ROAS and a negative ROI at the same time, which is why the break-even ROAS calculator starts from your margins instead of your revenue.
- How do I calculate ROAS?
- Divide the revenue your ads generated by what you spent on them: ROAS = revenue ÷ ad spend. $4,000 of revenue on $1,000 of spend is a 4.00 ROAS — every $1 of spend returned $4.
Know your floor: break-even ROAS calculator
Want the numbers read in context? Run a free audit of your Meta account.
More free tools: the full Kelpi toolbox