femtometer to attometer
Convert femtometer (fm) to attometer (am). Use an editable length converter, conversion formula, and reference table.
1 fm = 1,000 am
Conversion formula
One femtometer equals 1,000 attometer. Multiply your value in femtometer by this factor to get attometer. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 femtometer:5 × 1,000 = 5,000 am
Conversion table
| femtometer (fm) | attometer (am) |
|---|---|
| 0.01 | 10 |
| 0.1 | 100 |
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 1000 | 1,000,000 |
About these measurements
Length measures the distance between two points.
The base reference used here is the meter. One femtometer is 1e-15 base units; one attometer is 1e-18 base units.
Important distinctions
International feet and inches are used. Survey feet are not included.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert fm to am?
Multiply the quantity in fm by 1,000. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the attometer to femtometer converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
