Water Tools (Free Calculators & Converters)
All four tools in one place. Use the quick links or search/filter to jump in.
Body Water Percentage Calculator
Estimate total body water using height, weight, age, and sex with medically cited formulas.
Example: 70 kg • 172 cm • age 30 → TBW estimate and BW%.
Daily Water Intake Calculator
Personalized daily water target by weight, activity, climate, and pregnancy/breastfeeding flags.
Example: 80 kg • moderate activity • warm climate → daily liters/oz.
Water Softener Cost Estimator
Rough install/ownership cost based on hardness (gpg), household size, resin type, and install factors.
Example: 10 gpg • 4 people • basic install → low/avg/high estimate.
Water Weight Converter Tool
Convert liters ↔ kilograms ↔ pounds ↔ gallons using standard water density (with temperature option).
Example: 5 gal → lb & kg; 2.5 L → kg (at 20 °C).
Note: Health tools are informational and not medical advice. Cost figures are estimates; confirm local pricing. Conversions assume fresh water unless otherwise set by temperature/density.