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Micrometers to Nanometers (μm to nm)
Convert micrometers to nanometers: 1 μm = 1000 nm. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.
Formula
1 μm = 1000 nm
nanometers = micrometers × 1000 — reverse: micrometers = nanometers × 0.001
The factor is derived from the SI definitions of both units (base unit: m) as listed in NIST SP 811; results on this page are shown to 6 significant figures, the API returns up to 12.
Worked examples
- 5 μm = 5000 nm
- 12.5 μm = 12500 nm
- 100 μm = 100000 nm
Micrometers to nanometers conversion table
| Micrometers (μm) | Nanometers (nm) |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 3 | 3000 |
| 4 | 4000 |
| 5 | 5000 |
| 6 | 6000 |
| 7 | 7000 |
| 8 | 8000 |
| 9 | 9000 |
| 10 | 10000 |
| 15 | 15000 |
| 20 | 20000 |
| 25 | 25000 |
| 30 | 30000 |
| 40 | 40000 |
| 50 | 50000 |
| 75 | 75000 |
| 100 | 100000 |
| 200 | 200000 |
| 250 | 250000 |
| 500 | 500000 |
| 1000 | 1000000 |
FAQ
How many nanometers are in one micrometer?
1 μm = 1000 nm. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.
What is the formula to convert micrometers to nanometers?
Multiply the value in micrometers by 1000: nanometers = micrometers × 1000. For example, 5 μm = 5000 nm.
How do I convert nanometers back to micrometers?
Multiply by the inverse factor 0.001 (micrometers = nanometers × 0.001), or use the nanometers-to-micrometers page.
Related conversions
Machine access
- API:
GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=um&to_unit=nm - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":5,"from_unit":"um","to_unit":"nm"} - Markdown: https://tttkmbb.com/conversion/micrometers-to-nanometers.md · JSON: https://tttkmbb.com/conversion/micrometers-to-nanometers.json (add
?value=for a result) · Units: /api/v1/units?quantity=length - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.