Tools & Calculators | Free Marketing Math | OpsBlu
Free tools

Marketing calculators that don't waste your time

No signup, no email gate, no upsell. Just the math marketers actually need. Budgets, ROAS, and the UTM tags that make GA4 work.

Why we publish these

Most "marketing calculators" exist to capture an email and trigger a drip campaign. Ours don't. We use them in client work and got tired of recommending broken or gated alternatives.

The math behind each tool is plain and visible in the page. Nothing proprietary, no black box. If you spot a bug or want a calculator we haven't built, let us know.

The math is easy. Clean tracking is the hard part.

If your numbers feel off, your tracking probably is. Free audit, no commitment.

Free audit