How does Formula Field work in Salesforce?
Formula fields evaluate at display time and do not store data; they calculate values on the fly using a syntax that supports arithmetic operators, logical functions (IF, CASE, AND, OR, NOT), text functions (SUBSTITUTE, LEFT, RIGHT, CONTAINS), date/time math, cross-object references via relationship spanning (up to 10 levels), and special functions like VLOOKUP, REGEX, IMAGE, and HYPERLINK. The return type can be text, number, currency, percent, date, date/time, or checkbox.
Formula fields are limited to 5,000 compiled characters and count toward the object's compile-size limit. They do not trigger workflow or flow re-evaluation on referenced records when those records change; the formula simply recalculates on the next read. Cross-object formulas that span many relationships can impact performance in large list views or reports. Common use cases include calculated commissions, aging formulas (TODAY() minus a date field), conditional status indicators, and concatenating address fields. Clientell AI can generate optimized formula fields from natural-language descriptions, ensuring correct syntax and compile-size efficiency.