# Spotlight: Advanced Calculation & Conversion (iPhone & iPad)

Whether you’re an engineer, a student or a professor or just generally rely on a (scientific) calculator, you might want to know that your iPhone and iPad can perform complex calculations without having to use a calculator app. Especially on the iPad, this trick is rather helpful as Apple did not include a native app for this purpose. While you can use Siri for calculations and unit conversions, sometimes voice entry is not an option. Here’s a tutorial on **how to perform calculations and convert units using the Spotlight search feature on the iPhone.**

## Calculation & Conversion using Spotlight

### Advantages of this trick

The iPhone does in fact include a native calculator app, which can be used for scientific math when the iPhone is rotated into a landscape orientation. If you are simply looking for a quick solution, the method below is probably **much quicker** and offers just as much flexibility if you are willing to type your equation out in literal notation.

**iPad users** will benefit most from this trick, as there is no native calculator app thta comes preinstalled on Apple’s tablets.

### How to open Spotlight search

Open up the Spotlight search field by **swiping down** on the **Home Screen** or by **swiping left all the way**. Both search fields work fine for this purpose.

### How to perform calculations

You can now **type in your query into the search field**, which will return the mathematical result. The following notations are possible, see the bold part for examples:

Addition – **5+3**

Subtraction – **5-3**

Multiplication – **5*3**

Division – **5/3**

Sine – **sin(0.5*pi)**

Cosine – **cos(0)**

Tangent – **tan(0.25*pi)**

Arc-Sine – **asin(1)**

Arc-Cosine – **acos(1)**

Arc-Tangent – **atan(1)**

Round integer – **rint(11.4)**

Potentiate – **5^2**

Square root – **sqrt(36)**

Hypotenuse – **hypot(a,b)**

#### How to convert units

Apart from calculation, you can also use Spotlight for **unit conversions**. This works for currencies, measurements and all sorts of units. Try entering terms such as **1mph, 1l, 1m, 1m2, 1eur.**