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We invite you to explore our website. Here you will find items such as, economics, finance,
financial and statistical calculations, health, recreation, food and more for the day to day.

**Articles**

**Miscellaneous**

- Daily Calorie Needs
- Body Mass Index (BMI)
- Waist-Hip Ratio (WHR)
- Body Surface Area (BSA)
- Know your business.
- Internal Rate of Return (IRR))
- Modified internal rate of return (MIRR)
- Break-even point in quantities
- Break-even point in sales
- Cash Flow by Direct Method
- Cash Flow by Indirect Method
- Rule of three - direct proportion
- Rule of three - inverse proportion
- Compound rule of three
- Equivalent interest rates
- Basic concepts of trigonometry
- Proportional Division
- Polynomials
- Linear Correlation Coefficient
- Dupont Analysis
- Right Triangle
- Isosceles Triangle
- Equilateral Triangle
- Scalene Triangle
- Trapezium
- Regular polygon

**Utilities**

**Financial planning**

**Financial calculus**

- Monthly investments
**Monthly investments in unequal installments**- Discounted cash flow (DCF)
**Monthly leasing payments****Auto loan calculator**- Leasing prepayment
- Leasing interest rate
**Monthly loan payments**- Mortgage monthly payments
- Loan prepayment
- Loan prepayment with extra monthly payment
- Number of payments
- Loan Interest
**Interest on consumer goods****Equivalent Interest Rate**- Loans comparison
- Future Value - Investment
- Present Value - Investment
- Interest - Investment
**Present Value of annuity (investment) growing**- Future Value of annuity (investment) growing
- Period - Investment
**Price discount**- Simple discount
- Simple discount period
**Bill discounting**- Average term discount
**Effective rate discount**

**Economic and financial analysis**

- Financial ratios by DuPont system
- Investment Analysis by the Method of Net Present Value (NPV)
- Discounted Cash Flow (DCF)
- Internal Rate of Return (IRR)
- Modified Internal Rate of Return (MIRR)
- Average Interest Rate
- Average Rate of Return
- Break-Even Point (BEP) in Quantities
- Break-Even Point (BEP) in Sales
- French Amortization System (Price)
- Constant Amortization System
- German Amortization System
- Sinking Fund
- American Amortization System
- Amortization - Average of the Constant System and French
- Straight Line Depreciation Method
- Sum of Digits Depreciation Method (SYD)
- Balance Sheet Analysis
- Cash Flow Statement by Direct Method
- Cash Flow Statement by Indirect Method

**Glossary**

**Performance evaluation**

**Statistics and mathematic**

- Percent of a number
- Percent of a total
- Accumulated total by a percentage
- Percentage difference between two numbers
- Arithmetic mean
- Geometric mean
- Harmonic mean
- Quadratic mean
- Weighted mean
- Weighted geometric mean
- Weighted harmonic mean
- Standard Deviation
- Correlation Coefficient
- Simple Linear Regression
- Quadratic equation solver
- Cubic equation solver
- Polynomial evaluation
- Nth root solver
- Nth Power of a number(exponentiation)
- Logarithm & antilogarithm solver
- Trigonometric Functions Calculator
- Inverse Trigonometric Functions Calculator
- Directly proportional division
- Inversely proportional division
- Determinant matix 3 by 3 calculator
- Solving Systems of linear equations in two variables
- Solving Systems of linear equations in three variables
- Rule of three - direct proportion
- Rule of three - inverse proportion
- Compound rule of three

**Unit converter**

- Currency unit converter
- Area unit converter
- Distance unit converter
- Weight unit converter
- Volume / Capacity unit converter
- Pressure unit converter
- Acceleration unit converter
- Speed & velocity unit converter
- Angle unit converter
- Temperature unit converter
- Cooking unit converter
- Oven temperature unit converter

**Geometric calculation**

#### Plane figures

**Right Triangle****Isosceles Triangle****Equilateral Triangle****Scalene Triangle****Square****Rectangle****Trapezium****Right-Angled Trapezoid****Isosceles Trapezoid****Rhombus****Regular polygon****Polygon names****Circle**

#### Solid figures

**Pyramid****Triangle pyramid****Square pyramid****Rectangular pyramid****Cube****Prism****Rectangle Prism****Cone****Cylinder****Sphere**