From This to That

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.