You place the order today. The only question that matters is: when does it actually arrive? That gap has a name, and it quietly decides whether you buy calmly or spend your days firefighting. This short video explains it in three minutes; here below, the same story in five quick questions.
So what exactly is lead time?
The time from the moment you place an order to the moment the goods are in your hands, checked and usable. Not when they ship. Not when they reach the port. When you can actually use them.
Isn’t that just the delivery time?
No, and that is the most common mistake. The clock starts with order processing on both sides, runs through production (or picking, if the item sits in a warehouse), then transit and customs, and only stops after receiving and inspection at your site. Forget one piece and your planning is already wrong.
How long is a typical lead time?
For a stock item from a local supplier, days. For made-to-order or imported goods, twelve weeks is not unusual, and some equipment runs far longer. The exact number matters less than knowing the real figure, from real deliveries, for every item you depend on. Guessing is how stockouts are born.
Why do experienced buyers obsess over variability?
Because a supplier who averages four weeks but swings between two and eight is far harder to plan around than one who delivers a steady six. The swings hurt more than the length. Averages comfort you; ranges tell the truth.
What happens if I just ignore it?
Stockouts, emergency orders, air freight, and premium prices, because urgency kills negotiation. Manage lead time instead, and the picture flips: orders are planned, buying is calm, and you choose suppliers on value rather than on who can ship tomorrow. The rule of thumb fits in one line: the order date is the need date minus the lead time.
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