ScientificConverters.com Precise unit conversions for science & engineering.

    Loading…

    Convert Kilometers to Angstroms

    1 kilometer (km) equals 10000000000000 angstroms (Å).

    km
    Swap: convert angstroms to kilometers
    Å

    1 km = 10000000000000 Å

    Type in either box. Scientific notation works: 1.5e-3.

    Converting a list? Use the bulk kilometer to angstrom converter to paste a column from Excel.

    How to Convert Kilometer to Angstrom

    • 1 km = 10000000000000 Å
    • 1 Å = 1 × 10⁻¹³ km
    • Example: convert 15 km to Å: 15 km = 15 × 10000000000000 Å = 150000000000000 Å

    Formula

    Å = km × 10000000000000

    Derivation from SI units:

    • 1 km = 10³ m
    • 1 Å = 10⁻¹⁰ m = 0.1 nm
    • 1 km = 1000 m ÷ 1 × 10⁻¹⁰ m per Å = 10000000000000 Å

    Both units are defined exactly, so the factor is exact. Kilometer definition: kilometer; Angstrom definition: angstrom.

    Worked examples

    1. A reading of 8 km converts to 80000000000000 Å.
      8 km × 10000000000000 = 80000000000000 Å
    2. A value of 50 km is 500000000000000 Å.
      50 km × 10000000000000 = 500000000000000 Å

    Kilometer to Angstrom conversion table

    Kilometer to Angstrom conversion table
    Kilometers (km)Angstroms (Å)
    0.1 km1000000000000 Å
    0.5 km5000000000000 Å
    1 km10000000000000 Å
    1.5 km15000000000000 Å
    2 km20000000000000 Å
    3 km30000000000000 Å
    5 km50000000000000 Å
    8 km80000000000000 Å
    10 km100000000000000 Å
    15 km150000000000000 Å
    20 km200000000000000 Å
    21.0975 km210975000000000 Å
    25 km250000000000000 Å
    42.195 km421950000000000 Å
    50 km500000000000000 Å
    80 km800000000000000 Å
    100 km1 × 10¹⁵ Å
    160 km1.6 × 10¹⁵ Å
    200 km2 × 10¹⁵ Å
    500 km5 × 10¹⁵ Å
    1000 km1 × 10¹⁶ Å

    Where it's used

    Kilometers are used for road distances and speed (km/h), while angstroms appear in atomic radii and bond lengths (C–C ≈ 1.54 Å). Both measure length and distance, so the conversion is a fixed factor.

    Kilometer to other length units

    1 km expressed in every length unit
    Conversion1 km equals
    kilometer to meter 1000 m
    kilometer to centimeter 100000 cm
    kilometer to millimeter 1000000 mm
    kilometer to micrometer 1000000000 µm
    kilometer to nanometer 1000000000000 nm
    kilometer to angstrom 10000000000000 Å
    kilometer to mile 0.6213711922 mi
    kilometer to yard 1093.613298 yd
    kilometer to foot 3280.839895 ft
    kilometer to inch 39370.07874 in
    kilometer to mil 39370078.74 mil
    kilometer to nautical mile 0.5399568035 nmi

    Frequently asked questions

    How many angstroms are in 1 kilometer?

    1 km = 10000000000000 Å.

    How do I convert kilometers to angstroms?

    Multiply the value in km by 10000000000000. For example, 15 km × 10000000000000 = 150000000000000 Å.

    Is the km to Å conversion exact?

    Yes. Both units are defined exactly, and 1 km is exactly 10000000000000 Å.

    Sources

    Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.

    Cite this page

    APA

    Scientific Converters. (2026, October 15). Convert Kilometers to Angstroms. Retrieved October 17, 2026, from https://scientificconverters.com/length/kilometers-to-angstroms/

    IEEE

    Scientific Converters, "Convert Kilometers to Angstroms," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/length/kilometers-to-angstroms/