Tracking the right numbers is what separates manufacturers who improve steadily from those who keep guessing at what's actually wrong. This guide breaks down the 12 essential production KPIs » , from on-time delivery and OEE to yield, scrap, and capacity utilization, with the exact formula for each. It also covers what makes a KPI genuinely useful versus just another number to track. A practical read for any manufacturer looking to turn raw production data into real operational decisions.