555 Timer Calculator
Astable/Monostable Frequency and Duty Cycle Calculations
Result:
Enter values and click Calculate
555 astable: f = 1 / (0.693×(R1+2R2)×C) approximately; high/low times use 0.693 factors. Monostable pulse ~1.1×R×C.
Astable/Monostable Frequency and Duty Cycle Calculations
Enter values and click Calculate
555 astable: f = 1 / (0.693×(R1+2R2)×C) approximately; high/low times use 0.693 factors. Monostable pulse ~1.1×R×C.