Cost per pin calculator

Brass costs about seven times more than galvanised wire per kilogram. But per stitch, and compared with the value of the carton, the difference is much smaller. Enter your own numbers below to see.

Your inputsYou can change any field

Wire grade Six grades are included. Stainless steel is priced on request, so it is not listed here. Wire size Thickness × width. Check that your machine takes this size. Price, ₹ per kg Filled in with an approximate price for the grade. Replace it with the rate you have been quoted. Wire consumed per stitch, mm The total length of one stitch, including both legs. About 40 to 50 mm for single and double wall boxes, and 22 to 30 mm for book stitching. Stitches per carton Cartons per month Value of one carton, ₹ Optional. Shows the wire cost as a percentage of the carton value.

Cost of one stitch

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per stitch

Wire cost per cartonn/a

As a share of carton value

Monthly wire consumptionn/a

Monthly wire spendn/a

Wire length per kilogramn/a

All grades compared

Wire cost per carton for each grade, using the size and stitch count above and approximate prices.

Get an exact quote G.I. vs brass compared

Calculator

Length and weight

Find out how many metres of wire are on a reel. Useful for planning, and for checking a delivery against the invoice.

Wire size Grade Reel weight, kg

Wire on the reel

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metres

Per kilogramn/a

Cross sectionn/a

Densityn/a

Method

How it is calculated

The wire area is thickness multiplied by width. Multiply the area by the density of the metal (7.85 g/cm³ for mild steel, 8.50 for brass, 8.90 for copper) and by the length of one stitch to get the weight of one pin. Then multiply by the price per kilogram.

There is no allowance for scrap, wastage or margin. If you want to include these, add them to the price per kilogram.

Two tips. Measure the stitch length by straightening a stitch from your own machine rather than guessing. And replace the approximate prices with your actual quote, as metal prices change often, especially for copper and brass.