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How many kilometer in 1 femtometer?
The answer is 1.0E-18.
We assume you are converting between kilometre and femtometre.
You can view more details on each measurement unit:
kilometer or femtometer
The SI base unit for length is the metre.
1 metre is equal to 0.001 kilometer, or 1.0E+15 femtometer.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between kilometres and femtometers.
Type in your own numbers in the form to convert the units!
1 kilometer to femtometer = 1.0E+18 femtometer
2 kilometer to femtometer = 2.0E+18 femtometer
3 kilometer to femtometer = 3.0E+18 femtometer
4 kilometer to femtometer = 4.0E+18 femtometer
5 kilometer to femtometer = 5.0E+18 femtometer
6 kilometer to femtometer = 6.0E+18 femtometer
7 kilometer to femtometer = 7.0E+18 femtometer
8 kilometer to femtometer = 8.0E+18 femtometer
9 kilometer to femtometer = 9.0E+18 femtometer
10 kilometer to femtometer = 1.0E+19 femtometer
You can do the reverse unit conversion from femtometer to kilometer, or enter any two units below:
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kilometer to li
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kilometer to ligne
kilometer to megaparsec
A kilometre (American spelling: kilometer, symbol: km) is a unit of length equal to 1000 metres (from the Greek words khilia = thousand and metro = count/measure). It is approximately equal to 0.621 miles, 1094 yards or 3281 feet.
The SI prefix "femto" represents a factor of 10-15, or in exponential notation, 1E-15.
So 1 femtometre = 10-15 metre.
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