Hi Product Hunt! I'm Rajeev, founder of ZikCards.

ZikCards issues US Visa and Mastercard virtual cards for ad platforms, AI tools and subscriptions. Most of our customers run ads, and the same questions kept coming up in support: what ROAS do I need to break even, what will this budget actually return, why was my card declined.

So we built the tools we kept doing on paper, and made them free for everyone:

- Budget calculators for Google, Meta and TikTok ads that go all the way to net profit, not just clicks

- Break-even ROAS, so you know it's 1 / margin (3.33x at a 30% margin, not the 2x most people aim for)

- Campaign profit in dollars, because a 3x ROAS can still be a thin margin

- CPC, CPM, CTR, conversion rate, CAC, LTV, profit margin and markup

- Card tools: BIN lookup and checker, card brand, MCC codes, and Stripe test card numbers

- A USDT address checker that verifies the checksum before you send

No login, no sign-up, nothing stored. Each tool also explains the maths underneath it.

I'd love to hear which calculator you'd want next, and anything that gives you a number you don't trust.