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# Ingredient rounding

| **Quick answer:** When scaling or converting, CookBook cleans up awkward numbers so you see kitchen-friendly amounts like **1 ⅔ cups** or **2.25 kg** instead of **1.59 cups** or **2.247 kg**. Toggle rounding in **Side menu ☰ → Settings → Conversions → Rounding**. Choose **Rounded** for tidy values or **Accurate** for raw decimals.

# Why rounding exists

Changing units or servings often produces messy figures:

`1.5 metric cups → 1.59 US cups → 1.32 imperial cups`

Those amounts aren’t helpful at the stove, so CookBook nudges them to sensible fractions or neat decimals.

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# How CookBook rounds

| Unit group | Rounding rule |
| --- | --- |
| Cups, tsp, tbsp, fl oz, pint, ounces, dl, cl, pound | Rounded to the nearest amount below. |
| ml, grams | Shown as whole numbers (no decimals like 32.7 g) |
| Litres, kg, quart, stone | Rounded to the nearest 0.05 (e.g., 2.24 kg → 2.25 kg) |
| Gallons | Rounded to the nearest 0.025 |

The goal is a number you can measure without a scientific beaker.

| ⅛ (0.125) | ¼ (0.25) | ⅓ (0.33) | ½ (0.50) | ⅔ (0.66) | ¾ (0.75) | ⅞ (0.875) |
| --- | --- | --- | --- | --- | --- | --- |

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# Switching between Rounded and Accurate

1. Open the **Side menu ☰ → Settings**.
2. Under **Conversions**, tap **R****ounding**.
3. Select **Rounded** (friendly fractions / decimals) **or** **Accurate** (exact amounts, up to three decimal places).

Toggle at any time, CookBook refreshes every recipe instantly.