The short answer
Pipeline coverage is qualified open pipeline divided by the target for the period, and the honest answer to how much you need is one over your win rate. The famous 3x rule comes from a time when good B2B teams closed about a third of qualified pipeline. If you close twenty percent, you need five times coverage, not three, and using the rule of thumb instead of your own number is how teams cheerfully walk into a miss. Two cautions: only count opportunities with a real buyer, a real need, and a date, because inflating the numerator is the easiest way to feel safe and be wrong. And measure coverage at the start of the period, not at the end, since coverage is only useful as a leading indicator you can still act on.