CalcKing Pro-Professional

Professional engineering calculator, the mobile computing tool for engineers!
No ad interference: Specifically designed for engineers, with a pure usage experience and no pop-up ads.
Full coverage of core functions:
Basic scientific calculations: Trigonometric functions, logarithms and exponents, power operations, constant calls (π/e, etc.), support for degree/radian conversion, meeting general calculation needs.
12 types of unit conversions: Length, weight, area, volume, temperature, speed, etc., covering meters/cm/inches, kilograms/pounds, etc. Common sub-units, one-click quick conversion.
Base conversion: Supports binary, octal, decimal, and hexadecimal conversions, suitable for electronic/computer engineering scenarios.
Specialized engineering calculations: Built-in mechanics, circuits, materials, etc. Modules, solving professional problems such as force on inclined planes, series resistors, etc.
User-friendly design:
Portrait operation: Compatible with iPhone, using the vertical screen in engineering scenarios is more convenient.
Local saved calculation history: Automatically records the last 20 calculations, not lost when uninstalling, and can be recalled at any time.
Precise adaptation: Optimized for on-site work by engineers, clear display of large numbers, real-time input verification to avoid errors.
Efficient work, time and effort-saving: From basic formulas to complex engineering problems, all are covered, helping you focus on core work!