This converter turns micrometers into nanometers instantly, using the exact factor 1 micrometer = 1000 nanometers. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
One millionth of a metre, the scale of cells, pollen and semiconductor features. One billionth of a metre — the scale of light wavelengths and chip lithography.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
micrometers- The amount you are converting, measured in micrometers
1000- The exact number of nanometers in one micrometer
nanometers- The converted result
How it works, step by step
- Enter the number of micrometers you want to convert.
- The value is multiplied by 1000, the exact conversion factor.
- The result is displayed in nanometers, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 micrometers
Multiply 5 by 1000. That gives 5,000 nanometers. A quick sanity check: one micrometer is larger than one nanometer, so the number should get bigger — and it does.
Converting 72 micrometers
72 × 1000 = 72,000 nanometers. Working backwards, 72,000 ÷ 1000 returns 72 micrometers, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many nanometers are in one micrometer?
Exactly 1000. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert micrometers to nanometers?
Nanometers = micrometers × 1000. To reverse it, divide instead: micrometers = nanometers ÷ 1000, which is the same as multiplying by 0.001.
Is the micrometer bigger than the nanometer?
Yes. One micrometer equals 1000 nanometers, so it is the larger unit.
Why does my answer differ slightly from other micrometers to nanometers converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a micrometer?
One millionth of a metre, the scale of cells, pollen and semiconductor features.
What is a nanometer?
One billionth of a metre — the scale of light wavelengths and chip lithography.
Micrometers to nanometers reference table
| Micrometers | Nanometers |
|---|---|
| 0.5 µm | 500 nm |
| 1 µm | 1000 nm |
| 2 µm | 2,000 nm |
| 3 µm | 3,000 nm |
| 5 µm | 5,000 nm |
| 10 µm | 10,000 nm |
| 15 µm | 15,000 nm |
| 20 µm | 20,000 nm |
| 25 µm | 25,000 nm |
| 50 µm | 50,000 nm |
| 75 µm | 75,000 nm |
| 100 µm | 100,000 nm |
| 250 µm | 250,000 nm |
| 500 µm | 500,000 nm |
| 1000 µm | 1,000,000 nm |
Exact factor: 1 micrometer = 1000 nanometers. Values rounded for display.