ROT13 cipher online encoder and decoder. Encrypt and decrypt any cipher created in a ROT13 cipher. You can use any shift and additionally a key for more precise text encoding.

Are your hair falling out, are you starting to go bald? Use this calculator and check the probability and age at which you may be at risk of total hair loss.

Calculator of the amount of concrete needed to build a foundation slab or a concrete ceiling.

Use this calculator to calculate the molecular weight of gas.

The WHR calculator calculates the ratio of waist circumference to hip circumference.
Thanks to the Talia-Hips calculator, we will find out what type of obesity we have, what is the risk of hypertension, coronary diseases, stroke, atherosclerosis and diabetes, and we will learn the average standard WHR for our gender and age.

Calculator of the arithmetic mean of a series of distributing class intervals.

With this calculator, we will find out what ventilation efficiency should have depending on the size, height and type of room, e.g. in the kitchen, bathroom or toilet. The ventilation calculator will help us choose the right fan for the selected room, e.g. it will facilitate the selection of the hood for the kitchen.

What would your weight be on other planets? How old would you be on another planet in the solar system? When would you have your birthday? You can check it with this calculator. You can also check what the weight of any item would be. The calculator will convert your weight and age into the weight and age you would have if you lived on Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune or Pluto.

You can calculate any system of linear equations, both homogeneous and heterogeneous with any number of unknowns Using the Inverse of a Matrix method.

Thanks to the WACC calculator, we will calculate the average relative cost of capital employed in financing investments by the enterprise.
The weighted average cost of capital takes into account the diversification of the investment financing structure and the various costs of individual capital components, and indicates the average relative cost of the enterprise engaging a given capital.

Rectangle calculator will help you calculate the diagonal of the rectangle, the side length, height, area of the rectangle.

This calculator helps us check whether the planned investment will be profitable and whether the project should be accepted or rejected.
Thanks to the calculator, we can calculate:
NPV (Net Present Value) - sum of discounted net cash flows
PI (Profitability Index) - investment profitability
IRR (Internal Rate of Return) - internal rate of return
DPP (Discounted Payback Period) - discounted payback period
Value of discounted net cash flow for each period.

With the GUDERMANN trigonometric function calculator you can calculate the values of the hyperbolic amplitude. In addition to the response results, the calculator will also plot the selected function. You can choose a ready-made function, e.g. gd(x) or arcgd(x) as the inverse of the Gudermann function, or enter your own function, e.g. gd(x^2), gd(x+3), etc.

With this calculator you will calculate the weighted arithmetic mean.

Vernam cipher online encoder and decoder. Encrypt and decrypt any cipher created in a Vernam cipher.

The calculator helps you to calculate the present value of money (PV) and the future value of money (FV) in time.

With this calculator you can quickly calculate the kinetic energy of an object. You will also calculate mass from energy and velocity and speed given kinetic energy and mass.

With the help of the math calculator you can easily and quickly calculate the slope, the point of intersection with the Y axis.

This financial calculator will help you calculate the purchase or sale price of Treasury bills, the amount and the annual discount rate.

With the Fractions Calculator, you can multiplying any two mixed numbers or proper and improper fractions.
Fractions Calculator will show you the result of operations on fractions step by step and will give you explanations of the operations performed to multiplying fraction. You will learn how to simplify fractions, how to find a common denominator, how to find the least common multiple and the greatest common divisor.