Calculating TDEE, using weight lost

Shari325
Shari325 Posts: 196 Member
I understand all online calculators use generalizations and estimations to determine TDEE based on height, weight, and gender.
Using ones individual consumption and weight lost is more accurate, but do I figure in calories burned through exercise?

Example:
Averaged 1386 calories per day for 7 days (9700 total) and lost 2#
1386 + (2*3500)/7 = 2386

Is 2386 my average TDEE for this week? Or should I have figured in the calories burned through exercise some how?

Replies

  • Sarauk2sf
    Sarauk2sf Posts: 28,072 Member
    It is covered here:

    http://www.myfitnesspal.com/topics/show/819055-setting-your-calorie-and-macro-targets

    Relevant extract:

    "There are many TDEE calculators available on the interwebz. A couple of good ones are:

    http://www.exrx.net/Calculators/CalRequire.html
    http://scoobysworkshop.com/calorie-calculator/ (but ignore the rest of the site as it's full of bs).

    Note however, these are all estimates of averages. The best determination of what your TDEE are your results. If you have been tracking for a while, you should be able to look back over a period of time and calculate what YOUR actual TDEE is. For example, say I lost 8lb over a 10 week period while eating an average of 2,000 calories a day. My TDEE would be: 2,000 x 7 days x 10 weeks (140,000) which represents the total calories consumed over the 10 week period plus 8 x 3,500 (28,000) which represents my weight loss expressed as a deficit using the 3,500 calories per pound approximation. My total expenditure over that period would be 168,000 (the 140,000 plus the 28,000) divided by 70 (7 days x 10 weeks) = 2,400 per day. This would approximate my TDEE. Obviously this number should be tweaked up or down if there is any significant change in activity. It also assumes that you have been logging your intake accurately."

    One week is not long enough, but assuming the 2lb loss is an accurate representation of 'real' losses (i.e. not water.food weight) then your calculations include exercise.
  • Shari325
    Shari325 Posts: 196 Member
    Thank you Sara
    I had read that post previously, and it was this quote that confused me.
    "Obviously this number should be tweaked up or down if there is any significant change in activity."
    One week is not long enough, but assuming the 2lb loss is an accurate representation of 'real' losses (i.e. not water.food weight) then your calculations include exercise.
    This answered my questions!
    I have 6 months worth of logging and losses. I only used one week in my example to simplify.
    I have been losing consistently, and even though I am a long way from goal, I'm beginning to explore what maintenance may look like.
    Thank you again,
    Shari
  • sandyswims
    sandyswims Posts: 25 Member
    What happens if over the time frame rather than losing weight you gained one pound? Would you instead subtract 3500 calories from the amount consumed before dividing it by the number of days? Thanks!
  • Sarauk2sf
    Sarauk2sf Posts: 28,072 Member
    What happens if over the time frame rather than losing weight you gained one pound? Would you instead subtract 3500 calories from the amount consumed before dividing it by the number of days? Thanks!

    Correct: Same math - but you subtract rather than add.