Even though it is inevitable, but it can be anticipated to minimize damage and casualties. Past research has been conducted to predict the level of impact caused by earthquakes in real-time [2]. One of those past research is about an early earthquake warning system (EEWS), which will give an alert when it detects an earthquake [3]. Numerous architectures and algorithms have been developed in those studies. Various research is the utilization of neural network trained with backpropagation algorithm and optimized using Levenberg (LOM) to predict hypocenter location, moment magnitude, and the expansion of the earthquake [4], modification of LOM to minimize error on EEWS [3], and utilization of neural tree to predict P and S waves [5]. Until now, to the knowledge of the author, the study of using a backpropagation (BP) algorithm to predict earthquake magnitude and grid-based location in Indonesia has not been conducted yet. This algorithm is chosen because it has been proven to perform well in broad types of problems, such as regression, pattern recognition, and prediction [6][7][8][9]. In this paper, the study aims to measure the performance of neural network trained using backpropagation algorithm in predicting earthquakes magnitude and grid-based location based on earthquakes magnitude and location data in Indonesia recorded from 2000 to 2019.