555 Timer Calculator


Utilize this online calculator to determine the characteristics of the 555 Timer based on input resistance and capacitance values.

This 555 Timer calculator is designed to compute the delay and timeout in a monostable circuit using provided resistance and capacitance values. The IC 555 timer is widely employed in stable and monostable courses, where the output voltage turns high for a predetermined duration upon detecting a falling edge on the trigger pin. In a monostable circuit, timing occurs only once upon activation and ceases after that. To restart the course, manual reactivation is required.

555 Timer formula

    \[T = 1.1 \times R \times C\]


  • R = Resistance
  • C = Capacitance
  • T = Time Out Delay

555 Timer Calculator

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