Solve inductance, reactance, and frequency values with confidence. Switch units, compare cases, and inspect trends. Plot coil behavior clearly for design, study, and testing.
| Case | Inductance | Frequency | Inductive Reactance |
|---|---|---|---|
| 1 | 5 mH | 50 Hz | 1.571 Ohm |
| 2 | 10 mH | 60 Hz | 3.770 Ohm |
| 3 | 25 mH | 400 Hz | 62.832 Ohm |
| 4 | 0.1 H | 1 kHz | 628.319 Ohm |
The main relation is XL = 2πfL.
XL is inductive reactance in ohms.
f is frequency in hertz.
L is inductance in henry.
Use XL = 2πfL when inductance and frequency are known.
Rearrange the equation to f = XL / (2πL).
Rearrange the equation to L = XL / (2πf).
Angular frequency is ω = 2πf.
Signal period is T = 1 / f.
The reactance slope against frequency is dXL/df = 2πL.
Choose the calculation mode first.
Enter the two known values needed for that mode.
Select the correct units for each field.
Set the graph frequency range and graph points.
Press the calculate button.
Review the result table shown above the form.
Use the chart to inspect how reactance changes with frequency.
Export the current result as CSV or PDF when needed.
Inductance and frequency are tightly linked in AC circuits. A coil resists changing current. That opposition is inductive reactance. Reactance rises when frequency rises. Reactance also rises when inductance increases. This simple pattern helps engineers size coils, filters, and chokes.
Manual conversion mistakes are common. A design may use milliHenry, microHenry, hertz, kiloHertz, or megaHertz. This calculator converts the values first. It then applies the standard equation. It also shows angular frequency, signal period, and the reactance slope. Those extra outputs help with troubleshooting and planning.
Inductance frequency checks appear in power electronics, audio networks, radio circuits, switching supplies, and control boards. Designers compare low and high frequency behavior. Students verify homework steps. Technicians confirm expected coil response before replacing parts.
The Plotly graph makes the trend easy to inspect. A straight rising line means reactance changes directly with frequency when inductance stays constant. That visual cue helps when checking coil behavior over a working band. It also supports quick comparison between target and actual operating ranges.
Use realistic positive values. Small inductance with very high frequency can create large reactance. Large inductance at low frequency may still create a useful impedance. Always confirm the selected units before calculating. Most wrong answers come from unit mismatch, not from the formula itself.
Use the result table to document calculations. Use the example table to compare common cases. Export the current output when sharing results with teammates or clients. A clean workflow reduces errors and speeds review. That makes this calculator useful for study, prototyping, and field checks.
Inductive reactance is the opposition an inductor gives to alternating current. It depends on inductance and signal frequency. Higher frequency creates higher reactance.
An inductor resists changes in current. Faster current changes happen at higher frequency. That increases the coil’s opposition, so reactance rises linearly with frequency.
Yes. Use the frequency mode. Enter inductance and inductive reactance. The calculator rearranges the standard formula and returns the operating frequency.
Choose the unit that matches your source data. Common coil values use mH or uH. Large chokes may use H. The calculator converts everything internally.
Angular frequency is ω = 2πf. It describes how fast the waveform rotates in radians per second. Many AC and signal formulas use this value.
The chart shows how inductive reactance changes across a selected frequency range. It helps you inspect trends, compare operating bands, and spot unrealistic design assumptions.
Yes. It is useful for early filter checks, coil selection, and impedance estimates. You should still validate the full circuit with complete component data.
Unit mismatch is the biggest cause. Entering mH as H or kHz as Hz can change the result by large factors. Always verify units first.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.