The calculator is used to calculate the ventilation capacity in an attic or loft for the minimum, normal and extreme thermal conditions of the environment depending on the area and height of the room and the roof pitch. The fan removes warm air from the room and should be mounted at the highest possible point for the best efficiency.

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.

How far is the storm? How close is lightning? Is the storm looming or is it moving away? Surely everyone has asked themselves such questions. That is why we have created a lightning distance calculator with which you can easily check it.

With the Langevin trigonometric function calculator you can calculate the values of the function. In addition to the response results, the calculator will also plot the selected function. You can choose a ready function, e.g. L(x) or enter your own function, e.g. L(x^2), L(x+3) etc.

Using this calculator you can calculate the weight equivalent of acid.

The caloric demand calculator will help you create the right diet. It will answer the question of what is our daily calorie requirement and how much daily do we need to consume carbohydrates, proteins and fats to gain weight or lose weight by a given weight within a certain period of time.
We have a choice of several of the most popular formulas for calculating the basal metabolic rate. As a result, we will also get a seven-day alternating caloric cycle, thanks to which, with long-term diets, we can "cheat" the body by consuming different caloric values a day while maintaining a weekly diet.

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

Online calculator calculates the mode of series of distributing class intervals. You learn how to find the Modal value for a grouped data with different intervals between the data classes.

This calculator is a complete tool to calculate the heat loss of your home Whit this calculator, we will find out what the heat losses are, e.g. through the ceiling, external walls, windows, floor in each room of our house, depending on the type of building material, number of layers, insulation and external temperature.

Using the calculator, you can calculate the pressure, volume, temperature and volume of moles of ideal gas.

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

Thanks to the calculator, you can easily calculate the amount of calories you burn every day. There are over 600 different activities available, from which you can choose those that were or will be performed on a given day and set the duration for each selected activity.

As a result, the calculator will provide the total duration of all activities, the sum of calories burned and the number of calories consumed for each activity separately, including the time of its execution. The calculator also tells you how many hours you need to constantly perform a given activity to lose weight by about 0.5 kg, taking into account your weight.

Using this translator / converter you can quickly and easily check how to spell each word using the international (and not only) phonetic alphabet.

Thanks to the calculator, you can quickly and easily calculate how much money you will accumulate in a given period by putting a monthly fixed amount on your account for a specified period of time, giving the annual interest rate.

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

With this calculator you will calculate the mean square or arithmetic mean of the squares also known as the power mean of the second order.

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

With this online function graph plotter, you can draw any function. On one graph you can draw any three functions and compare their parameters. You can create graphs for many equations and functions.

With the help of the calculator you will calculate the determinant of the fourth degree matrix by the Laplace Expansion method. You will learn step by step how the calculations are performed and we will get explanations of each action. A useful tool for learning, consolidating, checking your own calculations and understanding the Laplace method.

With this calculator you will learn how to add in columns. You can check if the addition you have made is correct