About this app

TechCalc is the "Swiss Army Knife" of Scientific Calculators ... 44 Calculation Options + a Scientific Reference Section + the Periodic Table of the Elements!

Perfect for all aspects of scientific and engineering calculations in school, university and throughout your career. Why not download it now and give it a try?

Modes included in the main menu are:

● Basic Calculator - Algebraic and Reverse Polish Notation (RPN),
● Scientific Calculator - Algebraic and Reverse Polish Notation (RPN),
● 64-bit Programmer Calculator (Hex, Oct, Bin and Dec) - Algebraic and Reverse Polish Notation (RPN),
● Graphs (Functions, Implicit Equations, Parametric Equations, XY Scatter Plot and 3D Surface Plot),
● Matrices - including Inverse, Transpose, Determinant, Cofactor, Adjugate, Trace, Rank, Eigenvalues, Eigenvectors, Decompositions (LU, Cholesky, QR, Singular Value),
● Complex Numbers (Cartesian, Polar, using Euler's identity),
● Quick Formulas (includes 58 classic scientific formulas plus the ability to add your own custom formulas),
● Quick Converter,
● Time Calculator,
● Equation Solver (Linear Equations, Roots of a Polynomial Equation, Exponents of an Exponential Equation, Inequations, Factorization of Polynomials, GCD of 2 Polynomials, LCM of 2 Polynomials, Binomial Expansion & Vector Arithmetic),
● Calculus - including Symbolic Algebra (Derivatives, Definite Integrals, Taylor Series, Indefinite Integrals & Limits)
● Financial (Simple Interest; Compound Interest; Cash Flow; Amortization; Growing Annuity; Cost, Sales, Margin & Markup; Break-Even; Depreciation; Bonds; Days Calculation; Interest Conversion; Options Trading - Greeks)

+ the Periodic Table of Elements!

Features include:

● All Trigonometric operations (radians, degrees or gradients)
● Powers & Roots
● Logs and Antilogs
● Factorial, Modulus & Random Numbers Functions
● HCF, LCM, Prime Factors
● Pol() & Rec() Functions
● Permutations (nPr) and Combinations (nCr)
● Statistics (30 different functions!)
● Conversions (35 different categories!)
● Physical and Astronomical Constants (52 in total!)
● Fractions Mode
● 20 Memory Registers in each of the calculation modes
● Detailed calculation history
● Extensive Help and Reference
● Highly customizable via the Settings

The reference section includes the following calculators and converters (any, or all, of which can be moved to the main menu if required):

● ASCII Converter
● Aspect Ratio Calculator
● Balancing Chemical Equations
● Barometric Formula Calculator
● Bicycle Tire Pressure Calculator
● Body Mass Index (BMI) Calculator
● Boolean Algebra Calculator
● Characteristics of an RLC Circuit
● Color Calculator
● Coordinates Converter
● Empirical Formula Calculator
● Ephemerides Calculator
● Feet and Inches Calculator
● Fractional Bits Converter
● Geodetic Distance Calculator
● Humidity Calculations
● IEEE 754 Converter
● Interpolation Calculator
● IP Subnet Calculator
● Linear Regression Analysis
● Molecular Weight Calculator
● Number Base Converter
● Numerical Sequences
● Percentage Calculator
● pH Calculator
● Polygon Area Calculator
● Proportion Calculator
● Roman Numeral Converter
● Sigma and Pi Notation
● Statistics (Grouped Data)
● Unit Price Comparison
● Wind Chill Calculator

The reference section also includes the following information:

● Physical Laws
● Mathematical Tables
● Elementary & Linear Algebra
● Trigonometric Identities
● Differentiation & Integration Rules
● Statistics Formulas
● Vector Mathematics
● Names in the Metric System
● Cooking Temperature Scales
● Beaufort Wind Scale

Please email any questions that are not answered in the Help section.

This is also an ad-supported app - upgrade to an ad-free version via: https://play.google.com/store/apps/details?id=com.roamingsquirrel.android.calculator_plus

New features

ver 5.1.3:
★ minor bug fixes and library updates

App Permissions

Allows access to the vibrator.
Allows an application to write to external storage.
Allows applications to access information about networks.
Allows applications to open network sockets.
Allows an application to modify global audio settings.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows an application to read from external storage.