This page converts microns into hands using the factor 9.842519685e-06, and shows the reverse figure alongside it. Both units measure length, which is why one number does the whole job.
Exactly four inches, and still the only accepted way to state the height of a horse. The older name for a micrometre, still standard in filtration, machining and paint-thickness specifications.
The mil and the millimetre are not the same thing and are out by a factor of about forty. A mil is one thousandth of an inch — 0.0254 mm — and a spec sheet that quotes film thickness in mils means the small unit. British drawings write the same size as "thou". Two tables follow: rounded steps for quick lookup, and a set of real reference quantities converted into hands, which is usually more useful than the bare number.
The formula
microns- The amount you are converting, in microns
9.84251968504e-06- The exact number of hands in one micron
hands- The converted result
How it works, step by step
- Enter the value in microns.
- It is multiplied by 9.84251968504e-06, the exact factor between the two units.
- The answer is shown in hands, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A credit card’s long edge: 8.56e+04 micron in hands
At 8.56e+04 micron (a credit card’s long edge), the same quantity in hands is 8.56e+04 × 9.84252e-06 = 0.84252 hh. One micron is 9.84252e-06 hands, so the numbers shrink as expected.
A door height: 2.03e+06 micron in hands
Take a door height, roughly 2.03e+06 micron. The conversion is a single multiplication — 2.03e+06 × 9.84252e-06 — giving 19.9803 hh. Because the relationship is proportional, doubling the input doubles the answer to 39.9606 hh.
How to read your score
Frequently asked questions
How many hands are in one micron?
Exactly 9.84251968504e-06. 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 microns to hands?
hands = microns × 9.84251968504e-06. Reversed, microns = hands ÷ 9.84251968504e-06, which is the same as multiplying by 101,600.
Which is the bigger unit, the micron or the hand?
The hand. One micron is only 9.84252e-06 of a hand, so it takes 101,600 microns to make one hand.
What does this quantity actually measure?
Both units measure length. 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 micron?
The older name for a micrometre, still standard in filtration, machining and paint-thickness specifications.
What is a hand?
Exactly four inches, and still the only accepted way to state the height of a horse.
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.
Is there a quick way to do micron to hh in my head?
Plenty of people do this in their head: divide by 100,000 instead of using the exact factor 0.000010. At 100 that shortcut gives 0.001 hands, off by 0.000016 hands or about 1.60%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Microns to hands reference tables
| Microns | Hands |
|---|---|
| 0.5 micron | 4.92126e-06 hh |
| 1 micron | 9.84252e-06 hh |
| 2 micron | 1.9685e-05 hh |
| 3 micron | 2.95276e-05 hh |
| 5 micron | 4.92126e-05 hh |
| 10 micron | 9.84252e-05 hh |
| 20 micron | 0.00019685 hh |
| 25 micron | 0.000246063 hh |
| 50 micron | 0.000492126 hh |
| 75 micron | 0.000738189 hh |
| 100 micron | 0.000984252 hh |
| 250 micron | 0.00246063 hh |
| 500 micron | 0.00492126 hh |
| 1000 micron | 0.00984252 hh |
| 5000 micron | 0.0492126 hh |
Exact factor: 1 micron = 9.84251968504e-06 hands.
| Quantity | micron | hh |
|---|---|---|
| A credit card’s long edge | 8.56e+04 micron | 0.8425 hh |
| A door height | 2.032e+06 micron | 20 hh |
| An Olympic pool | 5e+07 micron | 492.1 hh |
| The Eiffel Tower | 3.3e+08 micron | 3248 hh |
| A marathon | 4.22e+10 micron | 4.153e+05 hh |
| Earth’s diameter | 1.274e+13 micron | 1.254e+08 hh |
Published reference values, converted with the same factor this page uses.