Convert Inch (in) to Twip (twip) instantly.
About these units
Inch (in)
An inch is defined as exactly 25.4 millimeters, a precise metric-based definition that preserves its usefulness within imperial systems. Historically, the inch was based on the width of three barleycorns placed end-to-end, a charming relic of medieval measurement practices. Today, the inch is vital in manufacturing, woodworking, consumer electronics (e.g., screen sizes), and tooling standards across the US and partially in the UK. Its size is small enough to offer usable precision yet large enough to avoid unwieldy fractions for many everyday objects. Even in predominantly metric industries, certain products—such as plumbing parts, bicycle rims, and camera mounts—retain inch-based standards for compatibility. This persistence shows how technological ecosystems can outlive their measurement origins.
Twip (twip)
A twip is a twentieth of a point, equal to 1/1440 of an inch. This extremely small unit originated in computer typography, particularly in early word processors and GUI layout systems developed by Microsoft and Apple. Because digital screens and software-based layout engines require highly precise internal measurements, twips allowed consistent and resolution-independent positioning of graphical objects and text. Even when the actual pixel density of displays varied, twips provided a device-agnostic coordinate system. Twips remain particularly relevant in Microsoft technologies such as Visual Basic, Windows API interfaces, and the formatting of Office documents. Although ordinary users rarely encounter the term, twips form part of the invisible numerical infrastructure that ensures consistent layout across different computers, printers, and operating systems.