THE RAMEN NOTEBOOK / TOOL 001

Noodle hydration
calculator

Your flour. Your chosen percentage. A clear water quantity.

Make it your batch

01 / CALCULATE

Enter your flour mass and the hydration specified by the recipe you are following. This calculates added plain water; the recipe’s other ingredients must be scaled separately.

Batch quantities
1–10,000 g

0–100% of flour mass

WATER TO ADD

175 g

500 g × 35 ÷ 100

Compare another hydration
0–100%; uses the same flour mass

200 g water · 25 g more water

These limits only keep the sums sensible; they aren’t cooking advice. Results show up to two decimal places.

The calculation

Added plain water (g) = flour (g) × hydration (%) ÷ 100. For example, 500 g flour at 35% gives 175 g water.

Use the percentage from your recipe. This tool does not select an ideal hydration or predict texture. It excludes water in eggs and premixed liquid kansui.