# Household Math

Whether you're needing to measure ingredients in the kitchen or calculate the sale price of a discounted item, Wolfram|Alpha is the perfect tool for answering math problems encountered in everyday life. Convert between standard and metric units during travels, add or multiply fractions for a baking recipe, calculate the percentage of a purchase to apply a discount or tip, compare different tire sizes and much more.

Perform computations with kitchen or other common measurements, convert them into any corresponding international unit or estimate the number of objects needed to fill a space, area or length.

#### Easily scale recipes up or down with precision:

#### Pack your boxes or your bag as efficiently as possible:

### Simple Fractions

Add, subtract, multiply or divide fractions.

#### Add fractions:

#### Do exact arithmetic with fractions:

### Linear Equations

Find the solution to a simple linear equation.

#### Find the solution to a simple linear equation:

### Simple Math

Do basic arithmetic calculations including addition, subtraction, multiplication and division.

#### Do basic arithmetic:

### Simple Percentages

Calculate a specified percentage of a number or convert a fraction to a percentage.

#### Convert a fraction to a percentage:

#### Calculate a percentage of a quantity:

#### Compute a discounted price:

### Simple Geometry

Get information about geometric shapes.

#### Compute properties of a plane figure:

#### Compute properties of a regular polygon:

### 関連する例

### Word Problems

Get the solution to a math word problem.

#### Solve a word problem:

Look up information about tire sizes for cars, bicycles and motorcycles.