What is the best estimate fir the length of a needle?

The length of a typical sewing needle ranges from about 1.5 inches (3.8 cm) to 3 inches (7.6 cm), depending on its type and purpose. For example, hand sewing needles are generally around 2 inches (5 cm) long, while longer needles may be used for quilting or specialty sewing tasks. Therefore, a good estimate for the length of a common needle would be around 2 inches.