RC Time Constant Calculator
RC Time Constant Calculator lets you rC time constant τ equals resistance times capacitance in farads. Enter your own values or load the worked example.
- Copy or download the computed result
- Adjust resistance (ω)
- See the processing method and limits
Method and calculation
RC time constant τ equals resistance times capacitance in farads.
Inputs and settings
RC Time Constant Calculator accepts Resistance (Ω) (minimum 0.000001); Capacitance (µF) (minimum 0.000001).
Worked example
RC Time Constant Calculator example — Resistance (Ω): 10000; Capacitance (µF): 100. Computed output: { "seconds": 1, "approximateSettlingSeconds": 5 }
Output and limitations
RC Time Constant Calculator: Use finite inputs. Results use double-precision arithmetic.
Technical references: JavaScript numerical operations
RC Time Constant Calculator FAQs
RC Time Constant Calculator applies the following rule to your input: RC time constant τ equals resistance times capacitance in farads. The worked example on this page uses the same processor as the result button.
RC Time Constant Calculator has these boundaries: Use finite inputs. Results use double-precision arithmetic. Start by checking the resistance (ω) field against the units or format shown.
RC Time Constant Calculator provides this sample: { "seconds": 1, "approximateSettlingSeconds": 5 }. Use the sample button to reproduce it, then replace the inputs with your own values.