Real Time Clock (RTC) Calculator
This calculator converts clock accuracy in parts per million (PPM) to real-time accuracy expressed in seconds per day or minutes per year.
Input parameters: PPM, seconds/day or minutes/year, and click the "Calculate" button to get other calculated values.
This calculator determines the crystal frequency error (PPM) caused by the crystal's temperature characteristics; in addition, the equivalent error value in seconds per day is given.