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Transkalkuli app for iPhone and iPad


4.4 ( 7824 ratings )
Utilities Productivity
Developer: IT-Service Janetzko
2.99 USD
Current version: 1.09, last update: 7 years ago
First release : 13 Mar 2014
App size: 102.61 Mb

Transkalkuli is a word of the language Esperanto and means "convert" .

With a total of 1199 units in 65 categories Transkalkuli is by far one of the most versatile and most comprehensive converters in the App Store. Transkalkuli is intuitive to use, has an attractive layout and is designed for IOS 7 .
You can view a video of the app in action before buying at http://www.janetzko.org/software/transkalkuli/

Included Features

∙ Universalapp for iPhone and iPad. Pay once and use on both devices.
∙ On the iPad usable in portrait and landscape mode.
∙ Supports iPhone 4 and iPhone 5 sizes.
∙ Full retina resolution for iPhone and iPad.
∙ Currency Converter for 93 currencies. Updated at 30 minute intervals.
∙ No in-app purchases and no advertising. Neither in this nor in future releases.
∙ Link to the Wikipedia article for every unit within the app.
∙ The input value, the selection of the input and the output unit, the position of the decimal slider, and the state of the switch for scientific or standard notation are explicitly stored automatically for each category of the Converter.
∙ Ability of saving the conversions to a logbook. Copy & paste from the logbook to other apps.
∙ Layout with 42 background colors and 7 patterns. The colors and patterns can be combined (294 possibilities).
∙ Detailed instructions for operating in an info area within the app.


The app is available for German and English speaking countries. Other languages ​​are planned.

List of all categories: (Units in brackets)

∙ Acceleration (21)
∙ Angle (9)
∙ Angular Acceleration (4)
∙ Angular Velocity (12)
∙ Area (18 Units)
∙ Biblical Length (23)
∙ Biblical Volume (29)
∙ Biblical Weight (16)
∙ Cooking Recipies (32)
∙ Currency (93)
∙ Data (25)
∙ Data Transfer Rate (10)
∙ Density (32)
∙ Dog Years (14)
∙ Electric Capacitance (18)
∙ Electric Charge (13)
∙ Electric Charge Density (6)
∙ Electric Conductance (9)
∙ Electric Conductivity (8)
∙ Electric Current (14)
∙ Electric Current Density (5)
∙ Electric Field (9)
∙ Electric Inductance (19)
∙ Electric Linear Charge Density (6)
∙ Electric Linear Current Density (8)
∙ Electric Resistance (19)
∙ Electric Voltage (11)
∙ Energy (28)
∙ Force (23)
∙ Frequency (23 Units)
∙ Fuel Efficiency (18)
∙ Latent Heat (3 Units)
∙ Length (43 Units)
∙ Light - Illumination (11)
∙ Light - Luminous Intensity (7)
∙ Light - Luminance (12)
∙ Magnetic Flux (12)
∙ Magnetic Flux Density (12)
∙ Magnetomotive Force (5)
∙ Molar Concentration (12)
∙ Moment of Inertia (7)
∙ Power (46)
∙ Prefixes (21)
∙ Pressure (33)
∙ Radiation - Absorbed Dose (23)
∙ Radiation - Exposure (4)
∙ Radiation - Dose Equivalent (8)
∙ Radiation - Radioactivity (21)
∙ Roman Area (20)
∙ Roman Length (21)
∙ Roman Volume (31)
∙ Roman Weight (19)
∙ Rotation (9)
∙ Sound Intensity (3)
∙ Surface Tension (8)
∙ Temperature (8)
∙ Time (25)
∙ Torque (11)
∙ Velocity (21)
∙ Viscosity - Dynamic (26)
∙ Viskosity - Kinematic (21)
∙ Volume (40)
∙ Volumetric Flow Rate (25)
∙ Water Hardness (9)
∙ Weight (38)

More categories and units are already planned and will be added in free updates.

Despite the utmost care in the preparation of conversion tables, it may be that one or the other error has occured. If you find an error, or if you miss categories and/or units, then please write me a message, either in a comment on the App Store or directly on my website under http://www.janetzko.org/software/transkalkuli/ or send an email to [email protected]. I will correct the error in an update or, if possible, add more categories/units.