Calculator

Calculator is a modern 3D calculator for everyday arithmetic, engineering and scientific calculations, and unit conversions.

Four modes and key features:
- Standard: addition, subtraction, multiplication, division, percentages, sign change, and repeated calculations with the equals button.
- Engineering: square root, powers, reciprocal values, trigonometric functions, logarithms, and constants π and e.
- Scientific: inverse and hyperbolic trigonometry, factorial, and other extended functions.
- Converter: 23 tools for currency, area, length, temperature, volume, mass, data storage, speed, time, dates, BMI, discounts, age, numeral systems, tax/GST, split bills, frequency, fuel consumption, angle, pressure, force, power, and loans.
- Calculation history is stored locally, with a configurable entry limit.
- Copy and paste numeric values.
- System, light, and dark themes, plus selection of the startup mode.
- Responsive 3D interface for phones and tablets.

All calculator functions and non-currency conversions work offline. Currency conversion sends the entered amount and selected currency codes to the InetTools service to load the current result and rate date. No account is required.