On the following pages you will find Katanas which I have for sale. A Katana 刀 is a long sword: generally a traditional sword with a curved blade between 60 and 80 cm. Note: The cutting edge of the sword determines the length of the blade. Katanas are worn with the cutting edge upwards in the Saya (scabbard). The Katana is developed from the Uchi-gatana, and started from the beginning of the Edo period around 1600.