Water Intake Calculator
Estimate daily water needs from weight and activity.
Instant · runs in your browserAbout the Water Intake Calculator
Your water needs depend on body weight, how active you are and how hot it is. This calculator gives a daily estimate in litres and glasses as a practical starting point.
How it works
A common rule of thumb is about 30–35 ml per kg of body weight per day, plus extra for exercise and hot weather, which is especially relevant during Pakistani summers.
Good to know
Food, tea and fruit also provide water. People with kidney or heart conditions should follow their doctor's advice.
پانی کی ضرورت کا کیلکولیٹر
وزن، سرگرمی اور گرمی کے لحاظ سے روزانہ پانی کی مقدار لیٹر اور گلاسوں میں جانیں۔ عام اصول تقریباً 30 سے 35 ملی لیٹر فی کلو وزن ہے۔
- ورزش اور گرمی میں زیادہ پانی
- گردے یا دل کے مریض ڈاکٹر کی ہدایت پر عمل کریں
How to use Water Intake Calculator
- Enter your values. Units and defaults are shown beside each field.
- Press Calculate (results also update as you type once calculated).
- Read the result and the step-by-step breakdown with the formula used.
- Copy the result or reset to start again.
Frequently asked questions
How accurate is this calculator?
Calculations use the standard formulas shown on the page, computed in full precision and rounded only for display. The result is only as accurate as the inputs and assumptions listed.
Is this medical advice?
No. Health calculators give general estimates for information only and are not a diagnosis. Speak to a qualified health professional about your situation.
Is it free?
Yes. All tools are free to use without an account.