555 Timer Calculator
The 555 timer is a commonly used integrated circuit that can be configured to produce a square waveform output. In Astable configuration the output will be a free running squarewave output. In Monostable mode the output will be a single high pulse generated for a single input event. This calculator will determine the pulse width of the output based on the resistance and capacitance values entered.
Monostable
Please enter your values below.
Astable
Please enter your values below.
Formulas
Thigh = 0.693(R1 + R2)CTlow = 0.693R2Cf = 1.44/((R1 + 2R2)C)