TDEE Calculator.

Formula or algorithm and variables.

Equation, units, and population

RMR = 10W + 6.25H − 5A + s; TDEE = RMR × activity factor. W is kg, H is cm, A is age, and s is +5 for the male coefficient set or −161 for the female coefficient set. This page names the equation rather than presenting an unexplained score. Check that every value uses the displayed unit and that you belong to the population for which the method is described. The calculation retains full precision internally and rounds only the visible result. A reproducible estimate should let another reader use the same inputs and reach the same arithmetic answer, while still recognizing that mathematical reproducibility does not prove medical suitability.

Worked example

For a 30-year-old, 70 kg, 175 cm adult using the female coefficient set, RMR is about 1,483 kcal/day. With light activity factor 1.375, TDEE is about 2,039 kcal/day. Work through the example by writing the equation, substituting each labeled input, and preserving units at every step. The example demonstrates arithmetic only; it is not a recommended body measurement, intake, exercise level, laboratory value, or date. Replace every example input with the values from the situation being considered, and retain those inputs with any result you copy. Small differences can arise from rounding, equation versions, atomic-weight conventions, or date boundaries.

Interpreting the estimate

The result is an estimated average maintenance-energy starting point, not a guaranteed intake. Body trends and professional guidance are more informative than day-to-day scale changes. Health calculations compress complex biology into a few inputs, so the result should be read as context rather than a verdict. Do not compare two people as though the higher or lower number is automatically better. Look for changes over time only when the method, units, and conditions are consistent. If a result conflicts with symptoms, a laboratory report, a clinician’s instructions, or a validated measurement, rely on the appropriate professional evidence rather than this calculator.

Validation and edge cases

Age is restricted to 18–100, height 120–230 cm, weight 30–300 kg, and only published activity factors are accepted. Pregnancy or breastfeeding stops the generic estimate. Blank, malformed, nonfinite, and out-of-domain inputs fail explicitly without producing NaN or infinity. The bounds prevent obviously implausible values from being mistaken for meaningful answers, but passing a range check does not make an input medically correct. Recheck dates, decimal separators, unit conversions, coefficient choices, and whether a laboratory value uses the expected assay and unit. Contact a qualified professional when a result could affect treatment, medication, pregnancy care, nutrition therapy, or exercise safety.

Limitations and responsible use

Activity multipliers are rough categories and actual energy expenditure varies with body composition, occupation, training, illness, temperature, growth, recovery, and adaptive changes. TDEE is not a calorie prescription. Do not use it to support extreme restriction, rapid weight loss, an eating disorder, or nutrition decisions during pregnancy or breastfeeding. FigureNest processes these inputs locally in the browser and does not send them to a calculation service. The page does not create a medical record, assess symptoms, or know personal history. Avoid using estimates to shame a body, pursue unsafe restriction, delay care, determine legal fitness, or replace contraception. Authoritative source links are provided so readers can check the equation version and current guidance before making a consequential decision.

Check assumptions and sources.

Activity multipliers are rough categories and actual energy expenditure varies with body composition, occupation, training, illness, temperature, growth, recovery, and adaptive changes.

PubMed — Mifflin–St Jeor Resting Energy Equation

Dietary Guidelines for Americans