From This to That
All-in-One Unit Converter
Free
From This to That is a comprehensive unit converter that puts thousands of conversions at your fingertips. Whether you're a student, engineer, scientist, or just need to convert a recipe from metric to imperial, this app has you covered.
80+ conversion categories:
Common — Length, area, volume, weight & mass, temperature, pressure, energy, power, force, time, speed, angle, and fuel consumption.
Engineering — Acceleration, angular velocity, angular acceleration, density, specific volume, moment of inertia, moment of force, and torque.
Heat — Fuel efficiency, temperature interval, thermal expansion, thermal resistance, thermal conductivity, specific heat capacity, heat density, heat flux density, and heat transfer coefficient.
Fluids — Flow (volumetric, mass, molar), mass flux density, concentration (molar, solution), viscosity (dynamic, kinematic), surface tension, and permeability.
Electricity & Magnetism — Charge, current, electric field strength, electric potential, resistance, resistivity, conductance, conductivity, capacitance, inductance, magnetomotive force, magnetic field strength, and magnetic flux.
Light & Sound — Luminance, luminous intensity, illumination, digital image resolution, frequency, and sound levels.
Radiology — Radiation, radiation activity, exposure, and absorbed dose.
Plus specialty converters:
- Color codes — Convert between HEX, RGB, HSL, HSV, and CMYK with a built-in color picker
- Morse code — Translate text to and from Morse code
- Roman numerals — Convert between decimal numbers and Roman numerals
- Number bases — Convert between binary, octal, decimal, hexadecimal, and more
- Text case — Transform text between camelCase, snake_case, kebab-case, Title Case, and others
- Timezone — Convert times across world time zones
- Metric prefixes — Convert between nano, micro, milli, kilo, mega, giga, and beyond
Key Features:
- Display as decimal, fractions, or compound
- Tap any result to copy it to your clipboard
- Export conversions to CSV and share them
- Search across all categories and units to find what you need instantly
- Clean, native interface on iPhone, iPad, and Mac
- Support for Apple Shortcuts
- No ads. No subscriptions. No data collection. No internet required.
Ratings & Reviews
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-remembers values when navigating between converters
The developer, Daniel Baughman, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Daniel Baughman
- Size
- 5.2 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later. - Mac
Requires macOS 15.6 or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Daniel Baughman