Calculator

Ideal Weight Calculator

Miller-formula ideal weight, body fat range, estimated life expectancy impact, fat energy reserve, and reference ranges for key wellness markers.

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Results

Miller formula (1983) — ideal weight
Body fat percentage range (alternate)
Estimated remaining life expectancy

All outputs are educational estimates, not medical advice. Life expectancy figures use population averages and simplified weight adjustments. Fat reserve math assumes excess mass is mostly adipose tissue and uses a sedentary energy estimate. Consult a healthcare provider for personal guidance.

Ideal ranges — urine pH, saliva pH & body temperature

Target wellness values for DIY tracking. Individual goals depend on health status, medications, and measurement method.

Urine pH

6.0 – 7.0

First-morning or random samples vary with diet, hydration, and kidney function. Track trends rather than single readings.

Saliva pH

6.5 – 7.5

Saliva pH shifts with meals, oral health, breathing, and hydration. Resting samples taken away from food are most comparable.

Body temperature

36.5 – 37.2 °C (97.7 – 99.0 °F)

Ideal varies by measurement site (oral, axillary, rectal), time of day, cycle, and activity. Patterns over time matter more than a single reading.