Capacitive reactance calculator
Online calculator for formulas used in electronic circuit design and electrical engineering.
Basic electric calculations:
Ohm's Law,
Ohm's Law with power,
DC power,
AC real power,
LC resonant frequency,
Capacitor charging/discharging,
Capacitive reactance,
Capacitive current + reactive power,
Capacitor energy,
Capacitor Δ energy,
RC discharging,
Inductor square pulse,
Inductive reactance,
Inductive current + reactive power,
Inductor energy,
2 parallel resistors,
3 parallel resistors,
System bandwidth,
Bandwidth ↔ rise time
Wire and winding calculations:
Calculate Capacitive reactance: 1uF, 50Hz, kΩ
This calculation can calculate the capacitive reactance X
_{C} of a capacitor knowing its capacitance and the frequency.
You can also calculate the capacitance knowing the desired reactance and frequency, or calculate the frequency knowing the capacitive reactance and capacitance.
X
_{C} = 1 / (2πfC)
Enter any 2 values, the 3rd one will be calculated:
Standard EIA Decade Values of capacitors  decade 1 to 10 uF
E6  E12  E24 
1.0 uF
1.5 uF
2.2 uF
3.3 uF
4.7 uF
6.8 uF
 1.0 uF, 1.2 uF
1.5 uF, 1.8 uF
2.2 uF, 2.7 uF
3.3 uF, 3.9 uF
4.7 uF, 5.6 uF
6.8 uF, 8.2 uF
 1.0 uF, 1.1 uF, 1.2 uF, 1.3 uF
1.5 uF, 1.6 uF, 1.8 uF, 2.0 uF
2.2 uF, 2.4 uF, 2.7 uF, 3.0 uF
3.3 uF, 3.6 uF, 3.9 uF, 4.3 uF
4.7 uF, 5.1 uF, 5.6 uF, 6.2 uF
6.8 uF, 7.5 uF, 8.2 uF, 9.1 uF

Other capacitance decades:
1  10 pF,
10  100 pF,
100  1000 pF,
1  10 nF,
10  100 nF,
100  1000 nF,
1  10 uF,
10  100 uF,
100  1000 uF,
1  10 mF,
10  100 mF,
100  1000 mF,
1  10 F,
10  100 F,
100  1000 F,
Some common standard frequencies:
Capacitive reactance formula says:
•The capacitive reactance (Xc) of a 1uF (one microfarad) capacitor at 50Hz (fifty hertz) is 3.183098861838kΩ (three point one eight three zero nine eight eight six one eight three eight kiloohms).
•For a 3.183098861838kΩ (three point one eight three zero nine eight eight six one eight three eight kiloohms) capacitive reactance at 50Hz (fifty hertz), you need a 1uF (one microfarad) capacitor.
•A 1uF (one microfarad) capacitor would have a 3.183098861838kΩ (three point one eight three zero nine eight eight six one eight three eight kiloohms) reactance at 50Hz (fifty hertz) frequency.
This is a simple online calculator for formulas used in electronic engineering and design.
This online calculator is for reference only. I do not guarantee it to work correctly. You use this at your own risk only.