The development of medical technology has produced efficient and easy-to-use medical devices, such as real-time heart rate and oxygen level monitors using Arduino with MAX 30102 sensors. This tool functions to monitor heart rate and oxygen levels in real time with a high level of accuracy, so it is useful for people with heart rhythm disorders and respiratory disorders such as hypoxemia. The data obtained is processed by the Arduino microcontroller and displayed on the LCD screen, the LED indicator lights up if the results are outside the normal limits. Based on testing, this tool has a low error value of 0.05% for BPM and 0.02 for SpO2 and an accuracy value of 99.95% for BPM and 99.98% in one person tested, while in 6 different people the error value is 0.63% for BPM and 0.09% for SpO2 and an accuracy value of 99.37% for BPM and 99.91% for SpO2 compared to medical standards for different objects. The sensors used are Arduino Uno and MAX30102, which results in more accurate measurements compared to existing device designs. It is hoped that this tool can be a practical solution for routine health monitoring, especially for individuals who need regular monitoring.