Daily Water Intake Estimate
Body weight (kg) × 0.033 L rough estimate—not medical advice.
計算機を使う
Running Pace Calculator
Minutes and seconds per km to km/h and approximate mile pace.
計算機を使う
Race Pace Split Calculator
Race distance and goal time → average pace per km and per-5 km cumulative splits.
計算機を使う
BMI Calculator
Body mass index from weight (kg) and height (cm)—adult screening categories only.
計算機を使う
Wind Chill Calculator
Air temperature and wind speed—approximate wind-chill index (educational).
計算機を使う
BMR Calculator
Mifflin–St Jeor resting metabolic rate from weight, height, age, and sex.
計算機を使う
Heat Index (°F)
Temperature and humidity—feels-like heat index estimate.
計算機を使う
1RM (Epley)
Weight and reps—estimated one-rep max.
計算機を使う
TDEE Calculator
Mifflin–St Jeor BMR × activity multiplier.
計算機を使う
Deficit Timeline
Rough days to lose weight at a set deficit.
計算機を使う
Macros → Grams
Calories and P/C/F % to daily grams.
計算機を使う
Protein by kg
Simple g/kg/day protein target.
計算機を使う
HR Zones
Training bands from max heart rate.
計算機を使う
BSA Mosteller
Body surface area in m².
計算機を使う
Waist-to-Height
Simple WHtR screen.
計算機を使う
BAI
Hip-based adiposity index.
計算機を使う
Devine IBW
Classic height-based reference weight.
計算機を使う
Lean Mass
Weight minus estimated fat mass.
計算機を使う
Corrected Calcium
Albumin-adjusted serum calcium (mg/dL or mmol/L)—multilingual medical-style tool.
計算機を使う