How is the Suu Index calculated?

Completion (how close you got to your goal) is 50%, regularity (spreading intake through the day) 20%, timing (drinking at good moments) 20%, and over-intake (penalty for big spikes) 10%. The four combine into a single 0–100 score.

What is a good Suu Index score?

Higher is better. Scores map to labels — roughly Excellent, Good, Improving and Weak — so you can see at a glance whether your hydration quality is on track, not just whether you hit a number.

How do I improve my hydration score?

Spread your water through the day instead of gulping it all at once, hit (but don't massively overshoot) your goal, and drink at steady intervals. Suu's reminders and Personal Hydration Plan are built to raise your Suu Index.

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The Suu Index

Q: What is the Suu Index?

The Suu Index is a 0–100 daily hydration score that measures the quality of your hydration. It combines completion (50%), regularity (20%), timing (20%) and over-intake (10%), and is labeled Excellent, Good, Improving or Weak.

A single 0–100 score that tells you how good your hydration really is — quality, not just how many milliliters you logged.

What is the Suu Index? The Suu Index is a 0–100 daily hydration score. It combines completion (50%), regularity (20%), timing (20%) and over-intake (10%) into one number, labeled Excellent, Good, Improving or Weak — so you can track the quality of your hydration over time, not just the total amount.

How the score is calculated

Four factors blend into a single 0–100 value:

50%

Completion

How close you got to your daily goal.

20%

Regularity

Spreading intake steadily through the day.

20%

Timing

Drinking at good moments, not all at once.

10%

Over-intake

A gentle penalty for big one-off spikes.

What your label means

Your score maps to a clear label so you know at a glance where you stand:

Excellent Good Improving Weak

Why quality beats quantity

Drinking 2 liters in one gulp before bed is not the same as sipping it steadily through the day — your body absorbs and uses water far better when intake is spread out. The Suu Index rewards how you hydrate, not just the raw total, which is why two people who both "hit 2L" can have very different scores.

How to improve your Suu Index

Spread water across the day instead of cramming it late.
Hit your goal — but avoid massive one-time overshoots.
Drink at steady intervals; follow Suu's smart reminders.
Let your Personal Hydration Plan pace you automatically.

The Suu Index is a motivational metric, not a medical measurement. It is general guidance, not medical advice.

Frequently asked questions

What is the Suu Index?

A 0–100 daily hydration score combining completion (50%), regularity (20%), timing (20%) and over-intake (10%), labeled Excellent, Good, Improving or Weak.

How is it calculated?

Completion 50%, regularity 20%, timing 20%, over-intake 10% — blended into one 0–100 number.

What's a good score?

Higher is better; labels (Excellent → Weak) show whether your hydration quality is on track, not just whether you hit a number.

How do I raise it?

Spread intake through the day, hit your goal without huge spikes, and drink at steady intervals. The Adaptive Hydration Brain and your plan are built to help.

See your Suu Index — free

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