An ångström is 10⁻¹⁰ m, one tenth of a nanometre. Crystallographers and chemists quote bond lengths and lattice spacings in ångströms; spectroscopists prefer nanometres.
How to use the Angstrom to nm Converter
- Type the number of ångströms into the Ångströms field. Decimals such as 5 are fine.
- Read the answer in Nanometres. It updates as you type, with no button to press. The same amount is also shown in m, µm, mm.
- To go from nanometres back to ångströms, type into the Nanometres field instead. Every field also has a unit menu with all 27 length units, for example m, km, cm, mm, dm, µm, in, ft, yd, mi, nmi, mil, furlong.
Results update as you type, and everything is calculated in your browser.
How it works
Both units measure length, so they are always in the same ratio: one ångström equals 0.1 nanometres. The calculator multiplies the number of ångströms you type by 0.1 to give nanometres, and when you type into the nanometres field it divides by the same factor to give ångströms. Because the ratio never changes, doubling the ångströms always doubles the nanometres, for example 20 Å is 2 nm.
How to convert ångströms to nanometres
- Write down the value in ångströms, for example 10 Å.
- Multiply by the conversion factor 0.1 (because 1 ångström = 0.1 nm).
- 10 × 0.1 = 1 nm.
- To go back from nanometres to ångströms, divide by 0.1, or multiply by 10.
Å to nm conversion table
| Ångströms | Nanometres | Nanometres | Ångströms |
|---|---|---|---|
| 0.5 Å | 0.05 nm | 1 nm | 10 Å |
| 1 Å | 0.1 nm | 2 nm | 20 Å |
| 1.54 Å | 0.154 nm | 5 nm | 50 Å |
| 5 Å | 0.5 nm | 10 nm | 100 Å |
| 10 Å | 1 nm | 20 nm | 200 Å |
| 100 Å | 10 nm | 50 nm | 500 Å |
| 1,000 Å | 100 nm | 100 nm | 1,000 Å |
| 5,000 Å | 500 nm | 1,000 nm | 10,000 Å |
Length units explained
- Ångström (Å)
- The ångström (Å) is 10⁻¹⁰ m, named after the Swedish physicist Anders Ångström. It is convenient for atomic radii, chemical bond lengths and crystal lattice spacings.
- Nanometre (nm)
- A nanometre is one billionth of a metre. Wavelengths of light (visible light is roughly 380–750 nm), semiconductor features and molecules are measured in nanometres.
Formula
1 Å = 0.1 nm
1 nm = 10 Å
nm = Å × 0.1
Worked example
Inputs: Ångströms: 10 Å.
Results: Nanometres = 1 nm; Metres = 1.0000e-9 m; Micrometres = 0.001 µm; Millimetres = 0.000001 mm.
Frequently asked questions
How many ångströms in a nanometre?
10 Å.
How long is a carbon–carbon bond?
About 1.54 Å (0.154 nm).
How do I convert ångströms to nanometres?
Multiply the number of ångströms by 0.1. For example, 10 Å × 0.1 = 1 nm.
How do I convert nanometres back to ångströms?
Divide by 0.1 (or multiply by 10), or simply type the value into the nanometres field above.
What is 100 Å in nanometres?
100 Å = 10 nm.
What is 5 Å in nanometres?
5 Å = 0.5 nm.
Is the ångströms to nanometres conversion exact?
Yes. The official definitions (NIST and the SI) fix 1 Å = 0.1 nm exactly, so the only difference you may see is rounding in the last displayed digit.