---
title: "Nanometers to Kilometers — nm to km converter"
description: "1 nanometer = 1 × 10^-12 kilometers. Convert nanometers to kilometers with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/nanometers-to-km/
site: "At One Place"
---

# Nanometers to kilometers

**1 nanometer in kilometers: 1 nm = 1 × 10^-12 km**

km = nm × 1 × 10^-12

To convert nanometers to kilometers, multiply by 1 × 10^-12. The table below gives the values people look up most often, and the converter works for any number.

## Nanometers to kilometers table

*Common nanometer values converted to kilometers.*

| Nanometers | Kilometers |
| --- | --- |
| 1 nm | 1 × 10^-12 |
| 2 nm | 2 × 10^-12 |
| 3 nm | 3 × 10^-12 |
| 4 nm | 4 × 10^-12 |
| 5 nm | 5 × 10^-12 |
| 10 nm | 1 × 10^-11 |
| 15 nm | 1.5 × 10^-11 |
| 20 nm | 2 × 10^-11 |
| 25 nm | 2.5 × 10^-11 |
| 30 nm | 3 × 10^-11 |
| 40 nm | 4 × 10^-11 |
| 50 nm | 5 × 10^-11 |
| 75 nm | 7.5 × 10^-11 |
| 100 nm | 1 × 10^-10 |
| 250 nm | 2.5 × 10^-10 |
| 500 nm | 5 × 10^-10 |
| 1,000 nm | 1 × 10^-9 |

## How the conversion works

The relationship is km = nm × 1 × 10^-12. Both units measure length, so the conversion is a fixed factor that never changes.

## Common questions

### How many kilometers are in one nanometer?

One nanometer equals 1 × 10^-12 kilometers. km = nm × 1 × 10^-12.

### How do you convert nanometers to kilometers?

Use km = nm × 1 × 10^-12. So 10 nm is 1 × 10^-11 km.

### How many nanometers are in one kilometer?

One kilometer equals 1,000,000,000,000 nanometers, which is the reverse of the conversion above.

## Related pages

- [Kilometers to Nanometers](https://atoneplace.net/convert/km-to-nanometers/)
- [Nanometers to Meters](https://atoneplace.net/convert/nanometers-to-meters/)
- [Nanometers to Centimeters](https://atoneplace.net/convert/nanometers-to-cm/)
- [Nanometers to Millimeters](https://atoneplace.net/convert/nanometers-to-mm/)
- [Nanometers to Miles](https://atoneplace.net/convert/nanometers-to-miles/)
- [Nanometers to Yards](https://atoneplace.net/convert/nanometers-to-yards/)
- [Nanometers to Feet](https://atoneplace.net/convert/nanometers-to-feet/)
- [Nanometers to Inches](https://atoneplace.net/convert/nanometers-to-inches/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)