ConverterHub

Nanometers to Angstroms Converter

Enter a length in nanometres to convert to ångströms and picometres.

How it is calculated

Both units are exact powers of ten of the metre (1 nm = 10−9 m, 1 Å = 10−10 m, 1 pm = 10−12 m), so the conversion is just a shift of the decimal point: Å = nm × 10 and pm = nm × 1000. The input is a length in nanometres. Both results are rounded to two decimals, which matters for very small inputs: 0.0004 nm shows as 0.00 Å while its picometre value, 0.40 pm, still displays. Negative numbers are converted the same way, and no upper limit is applied. To go the other way, divide by 10 for ångströms to nanometres and by 1000 for picometres to nanometres.

Worked example

A typical carbon–carbon single bond is about 0.154 nm long. In ångströms: 0.154 × 10 = 1.54 Å. In picometres: 0.154 × 1000 = 154.00 pm. Both lines describe the same distance, so a crystallography paper quoting 1.54 Å and a chemistry text quoting 154 pm agree. For comparison, 550 nm of visible light would be 5,500 Å.

Try this example →

Common mistakes

  • Multiplying by 100 instead of 10. 1 nm is 10 Å; the factor 100 relates ångströms to picometres (1 Å = 100 pm).
  • Confusing ångström with picometre, since atomic distances then differ by a factor of 100. A bond of 1.54 Å and 154 pm are the same, but 1.54 pm is not.
  • Reading the two-decimal result for tiny inputs as exact. Very small values may show 0.00 Å, so use the picometre line for sub-ångström lengths.
  • Typing the value in micrometres or metres. The input is nanometres only, so 0.154 µm must be entered as 154.

About this calculator

This converter translates a length in nanometres into ångströms using the fixed relationship 1 nm = 10 Å (and equivalently 1 Å = 100 picometres), since both units are decimal fractions of a metre — a nanometre is 10⁻⁹ m and an ångström is 10⁻¹⁰ m.

The ångström, named after physicist Anders Jonas Ångström, remains the everyday unit for atomic radii, bond lengths and X-ray/crystal-lattice spacings even though it isn't an SI unit, because typical atomic distances (roughly 0.5–3 Å) come out as small, easy-to-handle numbers instead of awkward fractions of a nanometre (0.05–0.3 nm). Chemists, crystallographers and semiconductor engineers switch between nanometres and ångströms constantly depending on whether they're describing a device feature or an individual bond.

Was this helpful?

You can pick up to 3 reactions.

Comments

  • Be the first to comment.

Popular calculators

Loan Calculator

Monthly payment, total interest and full amortization schedule.

Percentage Calculator

Percent change, percent of, and ratio calculations.

Discount Calculator

Calculate final price, savings, and discount amount.

BMI Calculator

Body mass index from height and weight (metric or imperial).

Age Calculator

Compute your exact age in years, months and days from a birth date.

Compound Interest Calculator

Calculate the final amount and interest earned with compounding.

All Calculators