Partial bottle calculator

How much did I drink after topping up my bottle?

Add refills, subtract what you poured out, and see the amount left to log.

Use one bottle over one period. Add up all refills, even small ones. If you give a drink to someone else or pour water away, include that amount separately.

Estimated amount drunk

Example below

Why the top-up matters

Start with 500 mL and add another 350 mL before the bottle is empty. Later, 200 mL is still in the bottle and 100 mL was poured out. That leaves 550 mL you drank. Adding 350 mL was a refill, not a second drink.

If you cannot estimate a spill or shared amount, the result is uncertain. Use the same unit throughout. This tool calculates volume only.

Continue on iPhone

Use the result when you next log a drink. The browser does not send it to Dropkin.

Open Dropkin on the App Store

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