Calculate timing values for the classic NE555 timer IC in astable ( oscillator) and monostable (one-shot) modes. Enter resistor and capacitor values to get frequency, period, duty cycle, or pulse width instantly. Pure client-side.
The 555 timer IC is one of the most popular integrated circuits ever created. Invented by Hans Camenzind in 1971, it is used in timer, pulse generation, and oscillator applications. This calculator helps you determine component values or timing parameters for both astable (continuous oscillation) and monostable (single pulse) configurations.