The Bayeux Tapestry is about 70 metres long. Its surviving embroidered linen measures approximately 68.38 metres in length and 0.5 metres in height, so 70 metres is the standard rounded answer.
Despite its familiar name, the object is technically an embroidery rather than a true tapestry: coloured woollen yarn was stitched onto a linen ground. It consists of nine linen panels joined together and contains dozens of scenes with Latin captions.
The work depicts the events leading to the Norman Conquest, from Edward the Confessor’s succession crisis through William’s invasion and the Battle of Hastings in 1066. It is especially valuable because it presents visual evidence about ships, weapons, armour, horses and medieval political storytelling, although its Norman viewpoint means it is not a neutral record.
A common mix-up is to answer 50 metres because the cloth is roughly 50 centimetres tall. The length, however, is nearly 70 metres—long enough to display a continuous narrative across a large interior.