Free tool

ROAS and break-even ROAS calculator

ROAS is revenue divided by ad spend. Break-even ROAS is 1 ÷ contribution margin. This calculator shows both and tells you whether your ad pays for itself.

[LACUNA: rótulos EN da calculadora no build-ferramentas.py; a ferramenta funcional existe só em PT]

Fields: Ad revenue, Ad spend, Item price, Product cost, Fees and shipping per item
Outputs: ROAS, Contribution margin, Break-even ROAS, Result: above or below break-even

Formulas: ROAS = revenue ÷ spend; break-even ROAS = 1 ÷ contribution margin. TikTok Shop fees: TikTok Shop Academy Brazil, checked 2026-10-04.

Notice: Estimate only. Margin changes with discounts, shipping and fees.

Frequently asked questions

What is a good ROAS?

It depends on your margin. What matters is staying above break-even ROAS.

How do I compute contribution margin?

Price minus variable costs (product, fees, shipping, commission), divided by price.

Are ROAS and GMV the same?

No. ROAS compares revenue to ad spend; GMV is total sold.

Does break-even ROAS change with fees?

Yes, because fees change the margin.

Does it work for affiliates?

It covers the ads side. Affiliate commission counts as a variable cost.

Free for 7 days

Try Glow.ai free for 7 days: the full Glow Seller plan and 5 creator search credits (1 credit = 1 batch of 100 creators). Card required; nothing is charged at sign-up. Cancel before day 8 and pay nothing.

Start my 7-day free trial Book a call