One henry is exactly 1,000,000 microhenries, so converting henries to microhenries is a single multiplication. Enter any figure and the result appears as you type — the arithmetic runs in your browser, so nothing is sent anywhere.
Microhenries are the range of RF chokes, switching-converter inductors and PCB trace inductance. The henry is the SI unit of inductance: one volt induced per amp-per-second change in current.
The tables underneath give both a plain step-by-step lookup and a list of real quantities expressed in microhenries, so you can sanity-check whether your answer is a plausible size.
The formula
henries- The amount you are converting, in henries
1,000,000- The exact number of microhenries in one henry
microhenries- The converted result
How it works, step by step
- Enter the value in henries.
- It is multiplied by 1,000,000, the exact factor between the two units.
- The answer is shown in microhenries, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
Mains transformer primary: 5 H in microhenries
Take mains transformer primary, roughly 5 H. The conversion is a single multiplication — 5 × 1e+06 — giving 5e+06 µH. Because the relationship is proportional, doubling the input doubles the answer to 1e+07 µH.
Relay coil: 0.1 H in microhenries
At 0.1 H (relay coil), the same quantity in microhenries is 0.1 × 1e+06 = 100,000 µH. One henry is 1e+06 microhenries, so the numbers grow as expected.
How to read your score
Frequently asked questions
How many microhenries are in one henry?
Exactly 1,000,000. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert henries to microhenries?
microhenries = henries × 1,000,000. Reversed, henries = microhenries ÷ 1,000,000, which is the same as multiplying by 1e-06.
Which is the bigger unit, the henry or the microhenry?
The henry. One henry equals 1e+06 microhenries.
What does this quantity actually measure?
Both units measure how strongly a coil opposes a change in current. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a henry?
The henry is the SI unit of inductance: one volt induced per amp-per-second change in current.
What is a microhenry?
Microhenries are the range of RF chokes, switching-converter inductors and PCB trace inductance.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Henries to microhenries reference tables
| Henries | Microhenries |
|---|---|
| 0.5 H | 500,000 µH |
| 1 H | 1e+06 µH |
| 2 H | 2e+06 µH |
| 3 H | 3e+06 µH |
| 5 H | 5e+06 µH |
| 10 H | 1e+07 µH |
| 20 H | 2e+07 µH |
| 25 H | 2.5e+07 µH |
| 50 H | 5e+07 µH |
| 75 H | 7.5e+07 µH |
| 100 H | 1e+08 µH |
| 250 H | 2.5e+08 µH |
| 500 H | 5e+08 µH |
| 1000 H | 1e+09 µH |
| 5000 H | 5e+09 µH |
Exact factor: 1 henry = 1,000,000 microhenries.
| Quantity | H | µH |
|---|---|---|
| PCB trace, 25 mm | 2e-08 H | 0.02 µH |
| RF choke | 1e-05 H | 10 µH |
| Buck converter inductor | 4.7e-05 H | 47 µH |
| Speaker crossover coil | 0.0015 H | 1500 µH |
| Relay coil | 0.1 H | 1e+05 µH |
| Mains transformer primary | 5 H | 5e+06 µH |
Published reference values, converted with the same factor this page uses.