ChatGPT Macro Calculator: Why AI Gets Your Numbers Wrong (And What to Use Instead)

A person standing behind a large smartphone display showing a ChatGPT conversation about macro counts. The background is black with floating red question marks and warning icons. Text above reads "ChatGPT Macro Calculator: Why AI Gets Your Numbers Wrong."

By Anthony Collova  | Founder, IIFYM.com  | March 4, 2026 ChatGPT vs. Macro Calculators: What’s Actually Worth Trusting? People treat ChatGPT answers like they came from a doctor. I’ve watched clients follow AI-generated macros for weeks without questioning a single number, because it answered in full sentences and sounded confident. That confidence is the problem. […]