In: Physics
Conversion of -3.5 x 10e-6 to fentometers?
I assume -3.5 X 10-6 is in meters.
femto (not fento) is a prefix to the unit meter. It is one of the standard prefixes attached to the S.I. quantities. A prefix refers to a multiplication by a power of 10. Here is a table that gives some common prefixes and their respective multiplication factors:
| Prefix | Symbol | Multiplication factor |
| exa | E | 1018 |
| peta | P | 1015 |
| tera | T | 1012 |
| giga | G | 109 |
| mega | M | 106 |
| kilo | k | 103 |
| hecto | h | 102 |
| deca | da | 101 |
| deci | d | 10-1 |
| centi | c | 10-2 |
| mili | m | 10-3 |
| micro | ![]() |
10-6 |
| nano | n | 10-9 |
| pico | p | 10-12 |
| femto | f | 10-15 |
Thus, 1 femtometer is equal to 10-15 meter. Thus 1 meter is equal to:

therefore, -3.5 X 10-6 m is equal to -3.5 X 10-6 X 1015 fm = -3.5 X 109 femtometers
So, to convert meters to fmtometers, just multiply the number by 1015.
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