--- title: "Canadian Water Intake Calculator and Drink Log | AumnI tools" description: "Compare a weight-based water target with Health Canada's total water intakes of 3.7 L for men and 2.7 L for women, and log drinks in ml by hydration value." url: https://aumnitools.com/ca/tool/water-intake-calculator category: "Health" country: "Canada" updated: 2026-11-08 --- # Water Intake Calculator Health Canada lists adequate intakes of total water at 3.7 L a day for men and 2.7 L for women, counting drinking water, other drinks and the water in food. This page starts your goal there and adds a weight-based target in millilitres and a log that weights each drink. ## Canada rules and figures - Health Canada gives adequate intakes of total water of 3.7 L a day for men and 2.7 L for women, the same as the US Dietary Reference Intakes. - These figures cover total water, meaning drinking water, other drinks and the water in food, not drinks alone. - Before a gender is chosen, this page starts the goal at the mid-point of the two figures, 3,200 ml. - The Canadian page begins with weight in pounds and volumes in millilitres, with 150 lb as the sample weight. Sources: [Health Canada: Dietary reference intakes, macronutrients](https://www.canada.ca/en/health-canada/services/food-nutrition/healthy-eating/dietary-reference-intakes/tables/reference-values-macronutrients.html) (checked 2026-11-08) ## How the water intake calculator works Your weight-based target begins from 35 mL for every kilogram, is adjusted for activity, climate and other settings, and is capped at 50 mL per kilogram. The daily goal is a separate setting, which starts at the Health Canada figure for the gender chosen, or at the mid-point of the two. Formula: `68.04 kg × 35 = 2,381 mL; × 1.25 (Moderate) × 1.0 (Temperate) = 2,977 mL; Max Safe = 68.04 × 50 = 3,402 mL` - Weight starts in pounds on the Canadian page, so 150 lb is used as 68.04 kg, and a switch to kg or stones is available. - The Health Canada figures count total water, so food supplies part of it and a drink log on its own may fall short without that being a problem. - Before a gender is chosen the goal sits at the mid-point of 3,700 and 2,700 ml, which is 3,200 ml. - Hydration values scale each drink: water 1.0, herbal tea 0.95, green tea 0.9, coffee 0.8, soda 0.6 and an alcoholic drink 0.3. - Volumes are in millilitres, and logs are stored in ml. ## How to use the water intake calculator 1. **Enter your weight and gender.** On Settings, type weight in pounds and pick a gender. Gender chooses between the 3.7 L and 2.7 L starting goals. 2. **Set activity and climate.** Pick the level that fits your week and the weather you live in. A Canadian winter might be Cold, and a prairie July Hot. 3. **Log drinks.** Choose a beverage, type the amount in millilitres and add it. Each entry counts by its hydration value. 4. **Review the numbers.** Analysis shows the minimum, recommended, optimal and maximum safe amounts, and Factors Considered lists what changed them. 5. **Adopt or export.** Use recommended on the Goals tab replaces your goal with the calculated target. Export Data saves your log. ## Example: A 150 lb woman, Moderate activity, Temperate climate At 68.04 kg the base is 2,381 mL, so Moderate activity gives a Recommended 2,977 mL. Minimum is 2,041 mL, Optimal 3,274 mL and Max Safe 3,402 mL. Her goal starts at the 2.7 L total-water figure, 2,700 ml. Logging two 500 ml waters and a 250 ml coffee counts as 500 + 500 + 200 = 1,200 ml, which is 44% of that goal. ## When to use the water intake calculator - **Reading the total-water figure.** Compare your own target with 3.7 L or 2.7 L and see how much of it might come from food. - **Winter and summer targets.** Switch Climate between Cold and Hot to see how far the target moves through the year. - **Counting mixed drinks.** Log water, tea and coffee together and watch the hydration-weighted total. - **Training weeks.** Raise Activity Level for a heavy week and log sports drinks and water against the new target. ## What the water intake calculator does not do - The Health Canada values are adequate intakes of total water for healthy adults, so a log of drinks alone can sit below them without being a concern. - Pregnancy and breastfeeding add to the calculated target but do not change the goal that starts from Health Canada's figure. Ask your doctor about your needs. - Streaks and weekly bars use the goal you have now, and reminders only appear while the page is open. - Medical conditions that change fluid needs, such as heart or kidney disease, are for your doctor to advise on. ## When something else is a better fit - **When you want a daily check-off with real streaks and history**, use the [Habit Tracker](https://aumnitools.com/tool/habit-tracker.md). - **When you want calories and macro targets for the same profile**, use the [Calorie Calculator](https://aumnitools.com/tool/calorie-calculator.md). - **When you have a medical condition that affects fluids**, use your clinician's guidance, which overrides any general formula. ## Questions about the water intake calculator ### What does Health Canada say about daily water? It lists adequate intakes of total water of 3.7 L for men and 2.7 L for women a day. Total water includes drinking water, other drinks and the water in food. ### Why is my drink log below 2.7 L? The figure counts food as well as drinks, so a drinks-only log is expected to be lower. Compare the log with the calculated target if you want a drinks-based number. ### Can I enter weight in kilograms? Yes. A small list above the weight box offers kg, lb and stones, and the tool remembers the unit you choose. ### How is the Recommended 2,977 mL reached? It is 68.04 kg times 35 mL, then times 1.25 for Moderate activity. A Temperate climate leaves it unchanged, and no gender multiplier applies to a woman. ### Does this replace my doctor's advice? No. The page uses general multipliers. If you take medicines or have a condition that affects fluid balance, ask your doctor how much to drink. ## Related tools - [Calorie Calculator](https://aumnitools.com/tool/calorie-calculator.md): Estimates BMR and daily calorie needs, with gram targets for protein, carbs and fat - [Macro Calculator](https://aumnitools.com/tool/macro-calculator.md): Turns a calorie target and macro split into daily and per-meal gram figures - [Habit Tracker](https://aumnitools.com/tool/habit-tracker.md): Tracks daily habit ticks against weekly targets, with streaks and completion rates ## About this page Runs in your browser: what you enter is processed on this device and is not uploaded. Profile, goals and your drink log, every day, are saved to local storage in this browser and not sent anywhere. General information only, not medical advice. Talk to a doctor or other health professional about decisions that affect your health. Last checked against the tool's code on 2026-11-08. Interactive version: https://aumnitools.com/ca/tool/water-intake-calculator