Ageing

Biological Age Calculator

Use this transparent biological age calculator to estimate body age from lifestyle markers, metric or imperial body measurements.

Bone Health Intake Calculator

Use this UK calcium intake calculator to compare daily calcium and vitamin D against bone-health planning targets, with osteoporosis context.

Energy Adequacy Calculator

Estimate calorie and protein needs for older adults, review BMI, weight loss, low-intake duration, and current intake gaps.

Life Expectancy Calculator

Look up the official 2023 U.S. period life-table average for remaining years of life from completed age and sex, with median age and milestone survival context.

Meal Fortification Calculator

Use this meal fortification calculator to estimate calorie and protein gaps, build a food-first fortification plan for older adults with small appetite.

Older Adult Hydration Calculator

Estimate daily fluid targets for adults 65+ based on weight, activity, and climate, with serving-size options, a spaced drinking schedule.