Stopwatch

The Stopwatch is an informational accessory that displays the player's current movement speed in , e.g. . It is purchased from the Traveling Merchant for .
== Crafting ==
=== Used in ===
== Notes ==
* 
* The conversion factor between miles/hour and tiles/second in Terraria is 11/15 (0.7333...), and conversely, 15/11 (1.363636...) between tiles/second and miles/hour. For example, the Minecart's top speed is 66mph, which is equal to .
** This is taken from Terraria's source code, where the player's internal pixels-per-tick velocity is multiplied by 216000/42240 () to get the miles-per-hour velocity for display. The numerator of this fraction represents 1 hour in ticks: 60 ticks in a second multiplied by 3600 seconds in an hour = 216000 ticks. The denominator represents 1 mile in pixels: 16 pixels in a tile multiplied by 1/2 tile in a foot multiplied by 5280 feet in a mile = 42240 pixels. Flipping the fraction gets the conversion factor between miles per hour and pixels per tick: 42240/216000. 1 pixel per tick is equal to 1/16 tiles (16 pixels in a tile) per 1/60 seconds (60 ticks in a second), hence the conversion factor between miles per hour and tiles per second is = 2640/3600 = 11/15.
* When riding in a Minecart or running, the Stopwatch's display only represents horizontal speed. When midair (jumping, flying, etc.), the displayed value is the total velocity in any direction.
* When moving horizontally along a Rope, the Stopwatch will display "" regardless of how fast the player is moving.
== History ==
== References ==