An ROI calculator provides a clear, quantitative snapshot of the real revenue slipping through your fingers every day without an automated voice agent. By converting abstract missed calls into concrete financial metrics—factoring in your average client value, weekly call volume, and typical peak/after-hours conversion rates—it turns subjective guesswork into an undeniable dollar amount. Rather than relying on vague estimates, the calculator shows you exactly how quickly missed weekend inquiries, busy-line hangups, and delayed follow-ups compound into tens of thousands of dollars in lost annual profits. Ultimately, using the ROI calculator transforms an AI receptionist from a perceived software expense into a proven revenue-recovery asset that pays for itself from day one.