Weekly water intake

The calculator uses the numbers you enter: water drunk, the target, and extra on active days. 2 times 7 minus 2 times 7 minus 0.4 times 3 is 1.2 below. Cups sit in the grid.

The target is not a medical intake and does not replace a doctor. Focus: focus time after interruptions.

Input data

Enter water drunk, the target, and extra on active days. You can leave the unit price blank.

Optional context

This field is optional. The unit price shows the cost of the water you drink in a week and in a month. A blank field skips that context and does not change the main result.

Results

Enter data and click Calculate.

How it works

The calculator multiplies water drunk by 7 and subtracts the target times 7 plus extra times days. 2 times 7 is 14. 2 times 7 plus 0.4 times 3 is 15.2. 14 minus 15.2 is 1.2 below. Cups sit in the grid. The unit price is optional.

The main result comes from water, the target, extra, and days. Cups and price sit in the grid.

Second example: 2.5 times 7 minus 2 times 7 minus 0.3 times 2 is 2.9 above. Third: 1.2 times 7 minus 2 times 7 minus 0.5 times 5 is 8.1 below.

The target is not a medical intake and does not replace a doctor. A comma in 12.5 is read the same way as a period.

Formula

Result = drunk × 7 − (target × 7 + extra × days). At 2, 2, 0.4, and 3: 14 − (14 + 1.2) = −1.2, so 1.2 below.

What these numbers mean

2 times 7 minus 2 times 7 minus 0.4 times 3 is 1.2 below.

water and target
Water drunk a day and the daily target you set. In the first example that is 2 and 2.
extra and days
Extra water on an active day times the number of such days. Here that is 0.4 and 3.
cups and price
They sit in the grid. The unit price is optional and does not change the main result.

How to use

  1. Enter 2 as water drunk.
  2. Add a target of 2 and extra 0.4, plus 3 active days and 3 cups.
  3. Click Calculate. The result is 1.2 below.
  4. Second example: 2.5, 2, 0.3, 2 and 1 is 2.9 above. Third: 1.2, 2, 0.5, 5 and 5 is 8.1 below.
  5. You can skip the unit price. When you fill it, it appears in the grid and does not change the main result.

Examples

Example 1

  • drunk 2
  • target 2
  • extra 0.4
  • active 3 days
  • cups 3

1.2 below

2 × 7 = 14. 2 × 7 + 0.4 × 3 = 15.2. 14 − 15.2 = −1.2. Cups sit in the grid.

Example 2

  • drunk 2.5
  • target 2
  • extra 0.3
  • active 2 days
  • cups 1

2.9 above

2.5 × 7 = 17.5. 2 × 7 + 0.3 × 2 = 14.6. 17.5 − 14.6 = 2.9 above.

Example 3

  • drunk 1.2
  • target 2
  • extra 0.5
  • active 5 days
  • cups 5

8.1 below

1.2 × 7 = 8.4. 2 × 7 + 0.5 × 5 = 16.5. 8.4 − 16.5 = −8.1, so 8.1 below.

Related calculators

Focus time after interruptions

Focus time after interruptions: 8 minus 4.8 and 2 is 6.8 hours short versus the plan. The hourly rate sits in the grid.

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Sitting time and breaks

Sitting time and breaks: 8 minus 4 times 60 over 60 is 4 hours above. Laptop and standing sit in the grid.

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Common questions

What does 1.2 below mean?

2 × 7 = 14. 2 × 7 + 0.4 × 3 = 15.2. 14 − 15.2 = −1.2. Cups sit in the grid.

How is the result calculated?

Result = drunk × 7 − (target × 7 + extra × days). At 2, 2, extra 0.4 and 3 days the result is 1.2 below.

What is the second example?

2.5 × 7 = 17.5. 2 × 7 + 0.3 × 2 = 14.6. 17.5 − 14.6 = 2.9 above.

What is the third example?

1.2 × 7 = 8.4. 2 × 7 + 0.5 × 5 = 16.5. 8.4 − 16.5 = −8.1, so 8.1 below.

What does the calculator not do?

The target is not a medical intake and does not replace a doctor. The unit price is optional.

Do all fields enter the main result?

No. The main result comes from water, the target, extra, and days. Cups and price sit in the grid.

What do water, the target, and extra mean?

Water is the amount drunk a day. The target is the daily threshold you set. Extra is water on an active day.

Does a comma in 12.5 work?

Yes. 12.5 and 12,5 are read the same way.

Sources

The result comes from the numbers you enter. This is water versus the target, not a routine score and not a medical intake.

Page updated in 2026.