Health & Fitness

Body weight (kg) × 0.033 L rough estimate—not medical advice.

Minutes and seconds per km to km/h and approximate mile pace.

Race distance and goal time → average pace per km and per-5 km cumulative splits.

Body mass index from weight (kg) and height (cm)—adult screening categories only.

Air temperature and wind speed—approximate wind-chill index (educational).

Mifflin–St Jeor resting metabolic rate from weight, height, age, and sex.

Temperature and humidity—feels-like heat index estimate.

Weight and reps—estimated one-rep max.

Mifflin–St Jeor BMR × activity multiplier.

Rough days to lose weight at a set deficit.

Calories and P/C/F % to daily grams.

Simple g/kg/day protein target.

Training bands from max heart rate.

Body surface area in m².

Simple WHtR screen.

Hip-based adiposity index.

Classic height-based reference weight.

Weight minus estimated fat mass.

Albumin-adjusted serum calcium (mg/dL or mmol/L)—multilingual medical-style tool.