How accurate are results?
They are estimates, not measurements. Activity, body composition and individual metabolism affect actual needs.
Which units can I use?
Metric kilograms and centimetres, or pounds with feet and inches. Values convert when you switch units.
Do I need my body fat percentage?
No. Leave it blank for Mifflin–St Jeor. If you supply it, Katch–McArdle is used.
Are my measurements saved?
The calculator runs in your browser. It does not send calculator entries to this website’s server or save them in a database.
Why do other calculators differ?
Different formulas, activity factors, goal adjustments and rounding can produce different results.