Lbs to Kg conversion help!

Sometimes, the internet is wrong.

232/2.2 = 105.45. You're doing it right. A bit more complicated than it has to be, but right.

I think you're experiencing a rounding error. According to "Ask Numbers", a kilogram is equal to 2.20462262 pounds. Divide 232 by THAT number, and you get 105.233.

In nursing, we generally don't worry about anything beyond the second decimal place -- so 220 pounds equals 100 kg. And 232 pounds is equal to 105.45.

Ruby Vee said:

232/2.2 = 105.45. You're doing it right. A bit more complicated than it has to be, but right.

I think you're experiencing a rounding error. According to "Ask Numbers", a kilogram is equal to 2.20462262 pounds. Divide 232 by THAT number, and you get 105.233.

In nursing, we generally don't worry about anything beyond the second decimal place -- so 220 pounds equals 100 kg. And 232 pounds is equal to 105.45.

Thank you so much! I was seriously losing it over this problem since last night! Also you mentioned that the way I was doing it is more complicated, do you have tips so I stop making it harder for myself? Thanks again!

emmjayy said:

Sometimes, the internet is wrong.

I guess it was still right haha. Thanks for commenting!

Squidney said:

do you have tips so I stop making it harder for myself? Thanks again!

Just divide the lbs by 2.2. 1 step, super easy.

So, 220 lbs/2.2 = 100 kg

100 lbs/2.2 = 45.45 kg

150 lbs/2.2 = 68.18 kg

Stop using 4 steps, it's a simple 1 step calculation.

Squidney said:

Thank you so much! I was seriously losing it over this problem since last night! Also you mentioned that the way I was doing it is more complicated, do you have tips so I stop making it harder for myself? Thanks again!

For now, keep doing it the way you're doing it. After you've done a few hundred problems/conversions, you will understand the relationships and be able to skip a few steps. Or, you could do what I did and reveiw a basic algebra text. But you seem to understand how to set up the problem, so I'm thinking you just need more practice.

jgardner said:

Just divide the lbs by 2.2. 1 step, super easy.

So, 220 lbs/2.2 = 100 kg

100 lbs/2.2 = 45.45 kg

150 lbs/2.2 = 68.18 kg

Stop using 4 steps, it's a simple 1 step calculation.

This is how I actually do it when just doing practice questions haha! I just thought it'd be better to post each step when I was asking for help so it's easier for other posters to point exactly where I went wrong!

But thank you for posting this as I feel like other students reading this would benefit from you tip!

Thank you!

Ruby Vee said:

For now, keep doing it the way you're doing it. After you've done a few hundred problems/conversions, you will understand the relationships and be able to skip a few steps. Or, you could do what I did and reveiw a basic algebra text. But you seem to understand how to set up the problem, so I'm thinking you just need more practice.

I will definitely do more practice questions! Thanks, Ruby!

Squidney said:

I guess it was still right haha. Thanks for commenting!

Haha I meant to say more but got distracted! Just wanted to let you know I ran the calculation and got the same answer you did and was going to hypothesize that the internet used a more precise conversion to come up with an answer that differed from your own

2.2 pounds to the kilo is the generally accepted conversion everywhere and all I've ever used in calculating BSA for chemotherapy or pediatric dose calculations in a peds clinic. If you use 2.2 you're not wrong.

Have you ever tried deminsional analysis for solving your pharm problems? It seriously keeps things straight for conversions!