Net calorie balance calculator
Calories eaten minus calories burned, for today. See where you land, what it looks like in minutes of cycling, walking or swimming, or what food it leaves room for. Friendly numbers, zero pressure.
Estimates only, not medical advice. Daily needs and activity burn vary from person to person. If you have health concerns or a history of disordered eating, talk to a qualified professional.
What is net calorie balance?
Your net calorie balance is simply what you ate today minus what your body used. Use the total from a watch or fitness app if you have one, or estimate your daily need from your weight, height, age, sex and activity level. A positive balance means you ate a bit more than that estimate; a negative one means you ate a bit less. Both are completely normal. Bodies are not bank accounts that need to hit zero every night, and weekly patterns say far more than a single day.
To make the number easier to picture, we translate a positive balance into minutes of movement for your body weight, with cycling as the headline, and a negative balance into a food it leaves room for.
How the numbers work
Net balance
Calories eaten − calories burned (or your estimated daily need).
Daily need
Mifflin-St Jeor: 10 × kg + 6.25 × cm − 5 × age, +5 (male) or −161 (female), × activity factor 1.2–1.9.
Minutes of movement
kcal per minute = MET × 3.5 × kg ÷ 200. Example: 75 kg, moderate cycling (MET 6.8) ≈ 8.9 kcal/min.
Frequently asked questions
What is net calorie balance?+
It is the calories you ate minus the calories you burned or needed that day. A positive number means you ate more than that estimate, a negative number means you ate less. It is a snapshot of one day, not a verdict.
Should I try to get back to zero every day?+
No. Energy balance evens out over days and weeks, and your body handles normal day-to-day swings. The minutes of movement are only there to make the number easier to picture. Move because it feels good, not to cancel out a meal.
How is my daily calorie need estimated?+
We use the Mifflin-St Jeor equation to estimate resting energy from your weight, height, age and sex, then multiply it by an activity factor from 1.2 (mostly sitting) to 1.9 (very physical days). It is a population-based estimate and can be off by a few hundred calories for an individual.
How are the minutes of cycling or walking calculated?+
Minutes = net calories ÷ (MET × 3.5 × your weight in kg ÷ 200). We use standard MET values from the Compendium of Physical Activities: moderate cycling 6.8, brisk walking 4.8, easy running 8.5 and leisurely swimming 6.0. Heavier bodies use more energy per minute, so the same balance takes fewer minutes.
Should I use my watch’s calories or my estimated daily need?+
Either works. Use a watch or app’s total daily calories if you have them, or the estimate here if you don’t. Just try to stay consistent, since different tools can disagree by quite a bit.
Sources and method
- Mifflin MD, St Jeor ST et al. (1990): A new predictive equation for resting energy expenditure
- Compendium of Physical Activities (MET values)
- NIDDK Body Weight Planner
- How many calories should you burn per day?
General information, not medical advice. Updated September 27, 2026.