Skip to main content
Solved

Body fat percentage formula

  • April 3, 2023
  • 2 replies
  • 72 views

Forum|alt.badge.img+4

Can someone smarter than me help me creating this formula 🙂
I'm trying to create a body fat calculator formula based on waist (cm) , hip (cm) and neck (cm)
The calculation I'm trying to make as a formula (for women) is this one:

And this is what I came up with in Airtable, but it says: Invalid formula:

 

 

 

495/(1.29579−0.35004*LOG({Waist (cm)}+{Hips (cm)}-{Neck (cm)})+0.22100*LOG(180))-450

 

 

 



For now I just want to test it and use it for myself, so I've plug in my height directly in the formula which is 180cm.
In my table I have a field for each measurements.

What am I doing wrong and how can I make it work?

Best answer by TheTimeSavingCo

Your formula's fine actually, it's just that one of your dashes is...weird?  I replaced the dash here:

1.29579−0.35004

 And now it works fine

Here's the working formula:

495 / ( 1.29579 - 0.35004 * LOG( ( {Waist (cm)} + {Hips (cm)} - {Neck (cm)} ) ) + 0.22100 * LOG( 180 ) ) - 450

2 replies

TheTimeSavingCo
Forum|alt.badge.img+31
  • Brainy
  • 6414 replies
  • Answer
  • April 3, 2023

Your formula's fine actually, it's just that one of your dashes is...weird?  I replaced the dash here:

1.29579−0.35004

 And now it works fine

Here's the working formula:

495 / ( 1.29579 - 0.35004 * LOG( ( {Waist (cm)} + {Hips (cm)} - {Neck (cm)} ) ) + 0.22100 * LOG( 180 ) ) - 450

Forum|alt.badge.img+4
  • Author
  • New Participant
  • 2 replies
  • April 3, 2023

Your formula's fine actually, it's just that one of your dashes is...weird?  I replaced the dash here:

1.29579−0.35004

 And now it works fine

Here's the working formula:

495 / ( 1.29579 - 0.35004 * LOG( ( {Waist (cm)} + {Hips (cm)} - {Neck (cm)} ) ) + 0.22100 * LOG( 180 ) ) - 450

Thank you so much, works perfectly now 🙂