Know your numbers. Keep the plan simple.
FuelCount is a set of free TDEE, macro, body-composition, and training calculators. Every formula runs on this page in your browser. We do not get a copy of your height, weight, or measurements.
Calculators
Calories
TDEE Calculator
Estimate maintenance calories from age, height, weight, and activity, then see cut and lean-bulk targets.
BMR Calculator
Compare Mifflin–St Jeor, revised Harris–Benedict, and Katch–McArdle resting calorie estimates.
Weight loss
Nutrition
Macro Calculator
Split a calorie budget into protein, carbohydrate, and fat grams based on your body weight and goal.
Protein Intake Calculator
See a daily protein range in grams, a per-meal target, and everyday food equivalents.
Body composition
Navy Body Fat Calculator
Estimate body-fat percentage with the U.S. Navy tape method using neck, waist, and (for women) hip measurements.
Army Body Fat Calculator
Estimate body-fat percentage with the AR 600-9 tape equations and compare it with the regulation’s age-group limits.
Activity
Walking Calorie Calculator
Estimate calories burned on a level walk from your weight, pace, and either distance or time.
Running Calorie Calculator
Estimate calories burned running or on a treadmill from weight, pace, time or distance, and optional grade.
Steps to Calories Calculator
Turn a step count into estimated distance and walking calories using height-based step length and a walking pace.
Training
One-Rep Max Calculator
Estimate your 1RM from a submaximal set using Epley, Brzycki, Lander, and Lombardi, then see training percentages.
Running Pace Calculator
Convert distance, time, and pace, then predict 5K through marathon finishes with the Riegel formula.
VO2 Max Calculator
Estimate aerobic capacity from a Cooper 12-minute run, a 1.5-mile run, or max and resting heart rate.
Heart Rate Zone Calculator
Estimate max heart rate (Tanaka or 220 − age) and Zone 1–5 ranges, with an optional Karvonen reserve method.
Reference
Why a calculator site like this exists
People search for maintenance calories, a calorie deficit, or a protein target because they want a starting number, not a lecture. FuelCount is built for that job: enter a few measurements, see the math, and read a plain-language explanation of what the formula can and cannot tell you.
The tools share one calculation library so a TDEE on one page and a deficit plan on another use the same Mifflin–St Jeor math, the same activity multipliers, and the same 3,500-calorie planning rule (with its limits spelled out). Nothing is sent to a server to get a result.
If you later add display ads or affiliate links, those will be marked as advertising. Until then, the labeled placeholder boxes show where those units can go without rearranging the layout.