What is the standard unit of measurement for fuel mass in rocketry?

The standard unit of measurement for fuel mass in rocketry is grams. Grams are commonly used for precise measurements in rocketry, especially when dealing with small quantities of fuel, which is often the case with model and experimental rockets. Using grams allows for finer resolution when calculating thrust-to-weight ratios and other critical performance metrics, which are essential for successful rocket launches.

While kilograms is also a unit of mass that can be utilized in rocketry, it is mostly reserved for larger-scale rockets where mass becomes significant. Liters are a unit of volume rather than mass, and therefore not suitable for measuring fuel mass. Pounds are used in some regions, particularly in the United States, but in the context of standardized measurements related to rocketry, grams are preferred for their precision and practicality in many applications.