555 CALCULATORS

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MONOSTABLE TIMEOUT CALCULATOR

Remember that the capacitor value is in farads and not microfarads. A 10uF cap would be .00001, a 1uF cap would be .000001, etc. Resistor values are in Ohms (IE: 1K is 1000, 1M is 1,000,000).

ASTABLE SQUARE WAVE CALCULATOR

Type in the
Capacitor
Value

Farads

Type in the
Resistor1
Value

Ohms

Type in the
Resistor2
Value

Ohms

This is
the
TIME HIGH

SECONDS

This is
the
TIME LOW

SECONDS

This is
the
FREQUENCY

HERTZ

This is
the
DUTY CYCLE

Percentage