Health & Fitness · Free tool
Water Intake by Body Weight
Calculate daily water intake from body weight using the half-ounce-per-pound rule plus activity and climate adjustments.
Updated April 2026
96 oz / day
Base 80 oz x 1.20 (activity + climate)
Ounces
96 oz
Milliliters
2839 ml
Cups (8 oz)
12.0
Estimate only — consult a doctor or RD for medical advice.
Advertisement
What it does
Calculate daily water intake from body weight using the half-ounce-per-pound rule plus activity and climate adjustments.
Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.
How to use it
- Fill in the inputs or drop your file.
- Click the primary button to run.
- Copy or download the result.