TDEE Calculator with Steps
Activity levels like "lightly active" are a guess. This TDEE calculator with steps replaces the guess with your average daily step count, turns it into calories using a measured energy cost of walking - and shows every step of the math.
Step 1 - Basal metabolic rate
The equation
BMR = 10 x 70 + 6.25 x 175 - 5 x 30 + 5Your values substituted
BMR = 700 + 1093.75 - 150 + 5 = 1648.75 ≈ 1649 kcal/dayStep 2 - Sedentary base (BMR x 1.2)
1648.75 x 1.2 = 1978.5 kcal/dayStep 3 - Energy cost of one step
VO2 = 1.811 + 0.02014 x 100 + 0.0007427 x 100² = 11.252 mL oxygen per kg per minute(11.252 - 3.5) / 100 x 0.005 = 0.0003876 kcal per kg per stepStep 4 - Calories from your steps
10000 x 70 x 0.0003876 = 271.32 kcal/dayStep 5 - Add them together
TDEE = 1978.5 + 271.32 = 2249.82 ≈ 2250 kcal/dayYour TDEE
2250 kcal per day
Intermediate values are exact unless marked with ≈; only the final result is rounded to a whole number.
How the TDEE calculator with steps turns steps into calories
The sedentary base, BMR x 1.2, covers a day of normal living without deliberate walking. Every step then adds a small amount on top. That per-step cost comes from a cadence-based equation fitted to oxygen uptake measured in 235 adults walking at known step rates (Moore and colleagues, 2021). The calculator subtracts resting oxygen use so only the walking itself is counted, and converts oxygen to energy at about 5 kcal per litre.
Which pace to pick
About 100 steps a minute is the usual threshold for moderate-intensity walking, so it is the default. Faster steps cost a little more each. If most of your steps are a purposeful walk, pick normal or brisk; if they are mostly pottering around the house or office, slow is closer.
What different step counts add
For the default person - 70 kg, walking at a normal pace - every 1,000 steps adds about 27 kcal. Over a day that adds up:
- 5,000 steps - about 136 kcal of walking, for a TDEE of about 2114 kcal/day.
- 10,000 steps - about 271 kcal, for a TDEE of about 2250 kcal/day.
- 15,000 steps - about 407 kcal, for a TDEE of about 2385 kcal/day.
Because the cost is per kilogram, a heavier person burns more per step: at 90 kg, the same 10,000 steps come to about 349 kcal. Pace matters less than you might think. At 70 kg, 10,000 slow steps are about 205 kcal and 10,000 brisk steps about 333.
Getting a step count you can trust
Use an average, not a single day. Most phones and watches show a weekly or monthly average, and a 30-day figure smooths out the difference between a hiking Saturday and a rainy Tuesday.
Know how your device misses steps. A phone left on the desk counts nothing. Wrist trackers can miss steps while you push a trolley or pram, and can add a few from arm movements. For ordinary walking, most modern devices land within about 10 percent, a smaller error than choosing the wrong activity level.
Do not treat 10,000 as a target the formula needs. That number started as a 1960s pedometer marketing slogan in Japan. Many adults average closer to 5,000 steps a day, and a TDEE calculator with steps works the same way at any count.
What this does and does not count
It counts walking. Running steps cost more than walking steps, so a lot of running will be underestimated. Strength training, cycling and swimming barely show up in a step count at all - if those are a big part of your week, use the Mifflin-St Jeor calculator with an activity level instead. Do not add the two results together, or the same activity is counted twice.
Steps versus activity level
As a sanity check, 10,000 steps a day at a normal pace lands close to what the "lightly active" multiplier (x1.375) gives for the same person. The step-based number simply replaces a guessed category with something you can measure.
Do not track steps? Use the Mifflin-St Jeor calculator with an activity level instead.