Based on historical longsword proportions

Photo from Wikimedia Commons
Excalibur
The legendary sword of King Arthur/Pop Culture
Excalibur is the mythical sword of King Arthur in Arthurian legend. While its dimensions are never precisely stated in medieval texts, historical medieval longswords of the type Excalibur is usually depicted as measure roughly 1.1 m in total length with a blade of about 0.9 m. A high-quality medieval arming sword or longsword typically weighed between 1.1 and 1.8 kg. Excalibur is usually portrayed as a finely crafted hand-and-a-half sword with a cruciform hilt and a jeweled pommel.
Measurements
Total length1.1 m
7.2 tenthsDolly Partons
1.83Dachshunds
5.4 tenthsDoorway heights
Blade length9 tenths m
3.6Wrench lengths
81.8Shirt buttons
2.5 tenthsGazebo diameters
Double-edged blade
Grip length2 tenths m
1.3 hundredthsSubway cars
333 millionAspirin molecules
9.1 thousandthsSemi truck lengths
Hand-and-a-half hilt
Blade width5 hundredths m
943 millionBohr radii
3.3 hundredthsDolly Partons
At the base near the crossguard
Mass1.5 kg
36.2 millionthsBoeing 737s
714 millionthsSUVs
5 billionthsSupertanker loads
Typical for a quality medieval longsword
Crossguard width2.2 tenths m
62.9 millionthsMonaco lengths
8.8Postage stamp widths
6.88SD card lengths
Cruciform guard