Count nails in a tray from a photo

Counting nails without crossed shanks reading as one

Nails are long and thin, so two crossed nails can form a single X shape and a heap of them turns into a tangle. Site stores, framing crews and hardware suppliers count loose nails to check a box against its label, to prepare a kit for a fixing job, or to record stock between deliveries. Treat them more like matchsticks than coins: aligned, not scattered.

Tip the nails onto a tray and draw them into parallel rows with a magnetic bar or your hand, heads at one end. A thin shank is only a few pixels wide in a wide shot, so get close enough that each one is clearly drawn. Collated nails in strips or coils are a different job: count the strips or coils by marking one whole strip as the example in Similar items. A pile of mixed lengths needs an example per length.

Heads are the easiest part to see, so if one nail carries a marker on its head and another on its point, it has been counted twice; correct the tally row before saving it. Boxes of nails on a shelf are faster with the box counter, and loose wood and machine screws follow the same tray routine.

Nail tray setup

• Nails aligned in rows with the heads together
• No crossings or bundles left in the tray
• Strips and coils counted as their own unit
• Close enough that every shank is clearly visible