Dialysis fluid restriction calculator

Convert the daily fluid limit your care team gave you into ml, litres, cups and fluid ounces — and see how much is left today.

What this shows

Many people on dialysis are given a daily fluid limit by their care team. It is usually written in millilitres or litres, while the cups, mugs and bottles at home are often measured in cups or fluid ounces. This converter shows the same amount in every common unit, so you can picture your limit with the containers you actually use. A US cup here is 240 ml and a fluid ounce is a US fluid ounce (about 29.6 ml).

As the day goes on, add what you have drunk with the +100 ml and +250 ml buttons, or type a running total. The page shows what is left of the number you entered, in ml and in cups. It does not suggest a limit — it only does the arithmetic on the number you give it.

Measuring consistently

Measure your usual glass, mug and bottle once with a measuring jug, filled the way you normally fill them, and write the amounts down. Many care teams also count foods that are liquid at room temperature, such as soup, ice, ice lollies, ice cream and jelly — ask yours what they count. Keep your tally the same way every day so your totals are comparable from one day to the next.

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Renal-diet food lists

• High-Potassium Foods to Limit
• Low-Potassium Foods
• High-Phosphorus Foods to Limit
• Low-Phosphorus Foods
• High-Sodium Foods to Limit
• Low-Sodium Foods
• Search potassium, phosphorus and sodium in any food

General information, not medical advice. These calculators only do arithmetic on the numbers you enter — confirm your limits with your care team.