Will the displayed weekly rate happen?

Not necessarily. It is a static energy equivalent; real responses vary and adapt.

Does the result predict muscle gain?

No. The calculator cannot determine how gained tissue will be distributed.

Can children or teenagers use it?

No. Growth and pediatric nutrition require age-specific professional assessment.

Can I use it during pregnancy?

No. Pregnancy has separate clinical guidance; use the pregnancy calculator only as an educational reference and work with prenatal care.

What if I am losing weight without trying?

Do not rely on this calculator alone. Unintentional weight loss warrants evaluation by a healthcare professional.

Plan from Your Current TDEE

Choose a modest planning increment and see assumptions openly—without guaranteed outcomes.

Uses your current TDEE

Surplus capped at 500 kcal

Static-rate caveat shown

Current TDEEUse a recent maintenance-calorie estimate or observed maintenance intake in kcal/day.Daily planning surplusThese are selectable planning increments, not a statement that an amount is medically safe for you.

Planning-rate display

kg/weeklb/week

How to Build a Calorie Planning Target

Start from a current maintenance estimate rather than recalculating personal physiology inside this tool.

Enter your current TDEE or best observed maintenance intake in kcal/day.

TDEE is already an estimate

A target inherits error from the entered TDEE. Update the assumption from real observations rather than treating one result as permanent.

A Calorie Target and Static Energy Equivalent

The primary result simply adds the selected surplus to current TDEE. The secondary weekly figure divides energy by 7,700 kcal per kilogram for transparent short-horizon planning. NIDDK explains that simple calorie-to-weight rules cannot predict long-term change because the body adapts.

Planning Examples

Moderate planning increment

Current TDEE and surplus

currentTdee:2400

dailySurplus:250

Initial calorie target

2,650 kcal/day; static equivalent about 0.23 kg/week

The weekly figure is an energy conversion, not a forecast.

Maintenance comparison

Current TDEE and surplus

currentTdee:2100

dailySurplus:0

Initial calorie target

2,100 kcal/day; 0.00 kg/week static equivalent

The explicit zero branch leaves TDEE unchanged.

Observe, then revise

Short-term scale changes can reflect water and food mass. Use trends and qualified advice rather than reacting to one measurement.

Frequently Asked Questions

No. It is only the calculator's maximum selectable increment and is not an individualized safety recommendation.

Still have questions about this calculation?

Try the Calculator

Transparent Weight-Gain Planning Formula

The calculator separates exact addition from an approximate static conversion.

Metric:kg/week equivalent = surplus × 7 / 7,700

Imperial:For imperial units: lb/week equivalent = kg/week × 2.2046226218

Formula

target kcal/day = current TDEE + selected surplus

Daily target

target kcal/day = current TDEE + selected surplus

Static metric rate

kg/week equivalent = surplus × 7 / 7,700

Imperial conversion

lb/week equivalent = kg/week × 2.2046226218

Scientific Background

NIDDK's Body Weight Planner uses a dynamic model because metabolism and energy expenditure adapt. This simpler calculator deliberately avoids claiming that a fixed energy surplus guarantees a fixed body-weight response.