### Unit conversion

Posted:

**Sun Oct 13, 2019 12:44 pm**How do you convert to angstroms to other units and from other units to angstroms?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=8&t=47193

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Posted: **Sun Oct 13, 2019 12:44 pm**

How do you convert to angstroms to other units and from other units to angstroms?

Posted: **Sun Oct 13, 2019 12:47 pm**

Similar to any other unit, you would convert to the base unit and then continue to use conversion ratios from there. For example, we would convert nanometers to meters and then the meters to Angstroms. Hope this helps!

Posted: **Sun Oct 13, 2019 12:48 pm**

Angstroms are equal to 10^−10 meter. Using this, you can convert angstroms to other units using 1meter/10^10 angstrom or vice versa. So if you covert angstroms to meters, you can easily convert meters to other units.

Posted: **Sun Oct 13, 2019 4:47 pm**

For an example of converting 50nm to Angstroms:

A good way to think about it is what was said before; you could also first convert nm to m and then convert that to Angstroms (easiest to conceptualize in my head).

So, 50nm = 50 x 10^-9 m

Since every Angstrom is 10^-10 m, we divide 50 x 10^-9 m / 10^-10 m.Angstrom^-1 = 5 Angstroms.

A good way to think about it is what was said before; you could also first convert nm to m and then convert that to Angstroms (easiest to conceptualize in my head).

So, 50nm = 50 x 10^-9 m

Since every Angstrom is 10^-10 m, we divide 50 x 10^-9 m / 10^-10 m.Angstrom^-1 = 5 Angstroms.

Posted: **Sun Oct 13, 2019 5:02 pm**

The conversion for Angstroms is 1 A = 10^-10 meters. Using this base conversion, you can convert to whatever desired unit.

Posted: **Sun Oct 13, 2019 5:08 pm**

I think the best way to do conversions like this is to use dimensional analysis. nm to meters to angstroms. I think also be aware of what your answer looks like. For example, if you are going. from nm to angstroms thats going. from 10^-9 to 10^-10. An angstrom is smaller scale, and there are more angstroms in a nm so it will be bigger number. Same with angstroms to meter, a meter is a lot bigger unit, so it would be a very small number.

Posted: **Sun Oct 13, 2019 5:09 pm**

Angstroms are only used for meters. Angstroms also equal 10e-10. The easiest way for me to convert other units to angstroms is by first converting whatever units the value is to meters (lets say nanometers to meters) and then applying the unit conversion of 10e-10 to that.

Posted: **Sun Oct 13, 2019 5:11 pm**

The best way to approach a unit conversion question is convert the units given to an SI unit and then use dimensional analysis to get to the desired unit-- in this case, you can convert Angstroms to meters.

Posted: **Sun Oct 13, 2019 5:34 pm**

You need to use stoichiometry. (Unit A)(Unit B/Unit A). This will work for any unit so long as they are similar. For example: meters with millimeters or grams with kilograms.

Posted: **Sun Oct 13, 2019 6:18 pm**

The simplest way would be to convert from the units given to the base which would be meters and from meters to angstroms or if another unit is given such as pm concert to m then angstroms.

Posted: **Sun Oct 13, 2019 6:19 pm**

When doing unit conversions it is helpful to think about setting up your fractions so that you are multiplying the given by what you are looking for divided by the conversion factor (the known that has the same units as the given). In the example of the angstrom, multiply the given amount in meters by (one angstrom divided by the amount of angstroms in a meter). This is an easy way to be sure that you are ending up with the correct units in the end.

Posted: **Sun Oct 13, 2019 6:24 pm**

To convert from angstrom to any other units you must first understand the scientific notation of each measurement. Knowing that information you should use dimensional analysis, in other words, you would be making conversions in which you are cancelling out terms to where the units you want are in the numerator of the last conversion, thus being the units of your final answer. For example, if you wanted to convert 5 angstrom to millimeters you would convert in this sequence: 5 angstrom*(10^-10m/1 angstrom)*(1mm/10-3m).

Posted: **Sat Oct 19, 2019 11:52 am**

Thank you all so much this helped a lot!!

Posted: **Mon Oct 21, 2019 4:36 pm**

you use conversion factors!

Posted: **Mon Oct 21, 2019 5:03 pm**

It completely depends on what unit you are converting to/from but you would use a find the conversion for one unit, multiply your number by the conversion fraction, and cancel out the units.

Posted: **Mon Oct 21, 2019 5:20 pm**

For conversions involving angstroms use the ratio: 10^-10m/Angstrom. For example 100pm*(10^-12m/pm)*(1Angstrom/10^-10m)= 100*10^-2 Angstroms.