iOS 18 Math Notes Unit Conversion Shortcuts
Apple’s iOS 18 integrates a dynamic calculation engine into the Notes and Calculator apps through Math Notes, allowing users to perform instant, inline unit conversions simply by typing or handwriting expressions. By using straightforward natural language syntax, Math Notes recognizes values, suggests contextual conversions, and automatically solves equations when an equals sign is entered. This guide details the syntax triggers and the primary categories of unit conversion shortcuts natively displayed within Math Notes.
How Inline Conversions Work
To trigger an inline unit conversion in Math Notes, enter a starting
quantity and unit, followed by the keyword "in" or "to," the target
unit, and an equals sign (=).
- Syntax:
[Value] [Current Unit] in [Target Unit] = - Alternative Syntax:
[Value] [Current Unit] to [Target Unit] =
Once you enter the equals sign, Math Notes automatically calculates the result and places it immediately after the prompt. If you write out a value and unit without specifying a target unit, tapping the expression often displays contextual conversion suggestions based on your regional settings.
Supported Conversion Categories and Shortcuts
Math Notes supports automatic inline conversions across all major measurement systems, seamlessly translating between imperial and metric standards:
- Currency: Converts live exchange rates across world
currencies.
- Examples:
50 USD in EUR =,100 GBP to JPY =,25 CAD in USD =
- Examples:
- Length and Distance: Handles imperial, metric, and
astronomical units.
- Examples:
12 inches in cm =,5 miles to km =,100 meters in feet =,6 yards in meters =
- Examples:
- Weight and Mass: Converts standard household,
scientific, and bulk weights.
- Examples:
150 lbs in kg =,500 grams to ounces =,2 tons in pounds =
- Examples:
- Temperature: Instantly shifts between Fahrenheit,
Celsius, and Kelvin without requiring manual formulas.
- Examples:
72 F in C =,0 C to F =,300 K in C =
- Examples:
- Volume and Liquid Capacity: Useful for cooking,
fuel, and engineering calculations.
- Examples:
2 gallons in liters =,4 cups to ml =,16 fl oz in pints =,1 liter in quarts =
- Examples:
- Speed and Velocity: Translates travel and wind
measurements.
- Examples:
65 mph in km/h =,100 km/h to mph =,25 knots in mph =
- Examples:
- Time: Evaluates spans across standard increments.
- Examples:
72 hours in days =,120 minutes to hours =,2.5 days in seconds =
- Examples:
- Digital Data and Storage: Converts digital memory
and file sizes.
- Examples:
1024 MB in GB =,2 TB to GB =,500 kilobits in megabytes =
- Examples:
- Area: Computes land, construction, and geometric
measurements.
- Examples:
10 acres in sq ft =,100 sq meters to sq feet =,5 hectares in acres =
- Examples:
- Energy and Power: Converts mechanical, electrical,
and dietary energy units.
- Examples:
2000 calories in kJ =,500 watts in horsepower =,10 kilowatt hours in joules =
- Examples:
Handwritten Conversions via Apple Pencil
On iPadOS 18 and iOS devices supporting handwriting input, these
shortcuts function identically with handwritten text. Write out the
conversion using the same formula (e.g., 5 miles in km =),
and Smart Script will complete the equation, rendering the converted
number inline in a style matching your natural handwriting.