It's a small, easy-to-use program designed to make everyday routine calculations easier, requiring nothing more than your browser to perform it.

Do you need to make calculations, perform a series of mathematical operations, but at the moment you don’t have a regular electronic calculator or corresponding program at hand? In this case, this simple and easy-to-use online calculator will be indispensable for you. You have the option of entering data using visual interface buttons, or directly using the keyboard. The calculator performs all basic operations (addition, subtraction, multiplication, division). The presented online mathematical calculator also allows you to calculate complex expressions, for example: (21-45)/(1.5*2)*(8+2*2)=-96. At your disposal.

Online calculator This is far from new. But most of the existing ones were made several years ago and have a primitive set of functions. The calculator presented on our website is in no way inferior to the calculators familiar to everyone, and in some ways even surpasses them.

Calculator is a device for mathematical calculations. Many people on earth use a calculator for simple calculations. Calculators are very different from each other: there are simple calculators among the functions that only have multiplication, division, subtraction and addition. There are more “sophisticated” calculators that can, among other things, raise to a power, etc. There are also online calculators. For example, on this site there is an online calculator in the lower right corner. An online calculator can save a lot of time in solving various mathematical problems. When calculating any non-trivial engineering problem, having a good calculator (even an online calculator will do) is simply necessary. Imagine for yourself what will happen if you make an arithmetic error when designing a building. The calculator also helps to prepare various financial reports. It is not an easy task to take out a loan from a commercial bank. Many bankers and traders resort to using an online calculator when working with documents.

Calculator(Latin calculātor “counter”):

1. An electronic computing device for performing operations on numbers or algebraic formulas;
2. A computer program that emulates the functions of a calculator.
3. A specialized program that automatically carries out some type of calculations (deposit calculator, contact pad calculator, etc.)
4. Profession (person doing the calculations).

In the Soviet Union, the term “microcalculator” was used to designate a small-sized computing device, first used in 1973 for the “Electronics B3-04” microcalculator. Large desktop computing devices were simply called “calculators.” Both desktop and microcalculators were officially called “EKVM - electronic keyboard computers.”

Currently, due to the fact that in English only the term “calculator” is used, the term “microcalculator” has fallen out of circulation.

Mathematical-Calculator-Online v.1.0

The calculator performs the following operations: addition, subtraction, multiplication, division, working with decimals, root extraction, exponentiation, percent calculation and other operations.

Solution:

How to use a math calculator

Key	Designation	Explanation
5	numbers 0-9	Arabic numerals. Entering natural integers, zero. To get a negative integer, you must press the +/- key
.	semicolon)	Separator to indicate a decimal fraction. If there is no number before the point (comma), the calculator will automatically substitute a zero before the point. For example: .5 - 0.5 will be written
+	plus sign	Adding numbers (integers, decimals)
-	minus sign	Subtracting numbers (integers, decimals)
÷	division sign	Dividing numbers (integers, decimals)
X	multiplication sign	Multiplying numbers (integers, decimals)
√	root	Extracting the root of a number. When you press the “root” button again, the root of the result is calculated. For example: root of 16 = 4; root of 4 = 2
x 2	squaring	Squaring a number. When you press the "squaring" button again, the result is squared. For example: square 2 = 4; square 4 = 16
1/x	fraction	Output in decimal fractions. The numerator is 1, the denominator is the entered number
%	percent	Getting a percentage of a number. To work, you need to enter: the number from which the percentage will be calculated, the sign (plus, minus, divide, multiply), how many percent in numerical form, the "%" button
(	open parenthesis	An open parenthesis to specify the calculation priority. A closed parenthesis is required. Example: (2+3)*2=10
)	closed parenthesis	A closed parenthesis to specify the calculation priority. An open parenthesis is required
±	plus minus	Reverses sign
=	equals	Displays the result of the solution. Also above the calculator, in the “Solution” field, intermediate calculations and the result are displayed.
←	deleting a character	Removes the last character
WITH	reset	Reset button. Completely resets the calculator to position "0"

Algorithm of the online calculator using examples

Addition.

Addition of natural integers (5 + 7 = 12)

Addition of integer natural and negative numbers ( 5 + (-2) = 3 )

Adding decimal fractions (0.3 + 5.2 = 5.5)

Subtraction.

Subtracting natural integers ( 7 - 5 = 2 )

Subtracting natural and negative integers ( 5 - (-2) = 7 )

Subtracting decimal fractions ( 6.5 - 1.2 = 4.3 )

Multiplication.

Product of natural integers (3 * 7 = 21)

Product of natural and negative integers ( 5 * (-3) = -15 )

Product of decimal fractions ( 0.5 * 0.6 = 0.3 )

Division.

Division of natural integers (27 / 3 = 9)

Division of natural and negative integers (15 / (-3) = -5)

Division of decimal fractions (6.2 / 2 = 3.1)

Extracting the root of a number.

Extracting the root of an integer ( root(9) = 3)

Extracting the root of decimal fractions (root(2.5) = 1.58)

Extracting the root of a sum of numbers ( root(56 + 25) = 9)

Extracting the root of the difference between numbers (root (32 – 7) = 5)

Squaring a number.

Squaring an integer ( (3) 2 = 9 )

Squaring decimals ((2,2)2 = 4.84)

Conversion to decimal fractions.

Calculating percentages of a number

Increase the number 230 by 15% ( 230 + 230 * 0.15 = 264.5 )

Reduce the number 510 by 35% ( 510 – 510 * 0.35 = 331.5 )

18% of the number 140 is (140 * 0.18 = 25.2)

Engineering calculator online

We are happy to present everyone with a free engineering calculator. With its help, any student can quickly and, most importantly, easily perform various types of mathematical calculations online.

The calculator is taken from the site - web 2.0 scientific calculator

A simple and easy-to-use engineering calculator with an unobtrusive and intuitive interface will truly be useful to a wide range of Internet users. Now, whenever you need a calculator, go to our website and use the free engineering calculator.

An engineering calculator can perform both simple arithmetic operations and quite complex mathematical calculations.

Web20calc is an engineering calculator that has a huge number of functions, for example, how to calculate all elementary functions. The calculator also supports trigonometric functions, matrices, logarithms, and even graphing.

Undoubtedly, Web20calc will be of interest to that group of people who, in search of simple solutions, type in search engines the query: online mathematical calculator. A free web application will help you instantly calculate the result of some mathematical expression, for example, subtract, add, divide, extract the root, raise to a power, etc.

In the expression, you can use the operations of exponentiation, addition, subtraction, multiplication, division, percentage, and the PI constant. For complex calculations, parentheses should be included.

Features of the engineering calculator:

1. basic arithmetic operations;
2. working with numbers in a standard form;
3. calculation of trigonometric roots, functions, logarithms, exponentiation;
4. statistical calculations: addition, arithmetic mean or standard deviation;
5. use of memory cells and custom functions of 2 variables;
6. work with angles in radian and degree measures.

The engineering calculator allows the use of a variety of mathematical functions:

Extracting roots (square, cubic, and nth root);
ex (e to the x power), exponential;
trigonometric functions: sine - sin, cosine - cos, tangent - tan;
inverse trigonometric functions: arcsine - sin-1, arccosine - cos-1, arctangent - tan-1;
hyperbolic functions: sine - sinh, cosine - cosh, tangent - tanh;
logarithms: binary logarithm to base two - log2x, decimal logarithm to base ten - log, natural logarithm - ln.

This engineering calculator also includes a quantity calculator with the ability to convert physical quantities for various measurement systems - computer units, distance, weight, time, etc. Using this function, you can instantly convert miles to kilometers, pounds to kilograms, seconds to hours, etc.

To make mathematical calculations, first enter a sequence of mathematical expressions in the appropriate field, then click on the equal sign and see the result. You can enter values ​​directly from the keyboard (for this, the calculator area must be active, therefore, it would be useful to place the cursor in the input field). Among other things, data can be entered using the buttons of the calculator itself.

To build graphs, you should write the function in the input field as indicated in the field with examples or use the toolbar specially designed for this (to go to it, click on the button with the graph icon). To convert values, click Unit; to work with matrices, click Matrix.

Compared to other online calculators, our solution makes calculations accurate to 20 decimal places. Regular services display up to 10 characters. This is due to the need for large computing resources. To display up to 30 characters, equipment with enormous performance is required. Our service has the following advantages:

• the ability to scale the calculator to convenient sizes;
• adaptation to any display size;
• calculations are made according to the rules of mathematics, taking into account the priority of operations of various types (addition, multiplication, etc.);
• the most accurate calculations;
• calculation of the entire expression at once, and not in parts.

A mathematical calculator makes it possible to accurately calculate any values ​​according to the canons of mathematical laws. Does not create subtotals after entering each action, making the calculation take into account the entire mathematical expression, rather than all operations separately.

Example calculation

If you try to determine the result of the calculations of the following example 3 + 3x3, the system will give a result of 12. Other calculators, as a rule, will give a result of 18. This is due to the fact that after each action a subtotal is determined. Our program takes into account the hierarchy of mathematical symbols, first performing the operation of multiplication, and then only addition.

How to count on a simple calculator

A simple calculator performs simple calculations: add up the sum or difference, perform division and multiplication operations. Use the mouse or keyboard keys to enter values. The most convenient for calculations will be the numeric block, but you can also use those keyboard buttons that are located between the function row and the letter block. All digital values ​​on the keyboard correspond to the buttons of the online calculator.

To perform addition and multiplication, division and subtraction, the following keys on the PC keyboard are used:

[*] - multiply;

[/] - divide;

[-] - take away;

[+] - add;

- equals;

[.] - decimal separator.

To find out the result of a mathematical operation, you need to press on the keyboard or the [=] sign in the calculator interface. To reset values ​​using the keyboard, you can press one of the keys - or . By pressing the key you can delete the last entered value.

What operations can be performed with a simple calculator?

• (x) - multiplication;
• (÷) - division;
• (-) - subtraction;
• (+) - addition;
• (C) - reset values.
• (→) - delete the last entered character.

The history of the development of calculators goes back many centuries. In the Soviet era, enthusiasts call the MK-52 the most advanced model. The device had powerful hardware for that time and was used for programming; some specialists managed to write games and programs on it. The legendary series survived the dawn of mobile technology and is still produced today under the name MK-152.

Built-in math calculator will help you carry out the simplest calculations: multiplication and summation, subtraction, and division. Online degree calculator will quickly and accurately raise any number to the power of your choice.

The presented engineering calculator contains all possible variations of online programs for calculations. the site contains trigonometric calculator(angles and radians, degrees), logarithms(Log), factorials(n!), calculation of roots, sinuses And arctangents, cosines, tangents online- many trigonometric functions and more.

You can work with the computing program online from any device; in each case, the size of the interface will be adjusted to your device, or you can adjust its size to your taste.

Numbers can be entered in two ways:

• from mobile devices- input with phone or tablet display, program interface keys
• from a personal computer- using an electronic interface display, or through a computer keyboard using any numbers

Instructions for the functions of an engineering calculator

To understand the capabilities of the program, we give you brief instructions; for more details, see examples of online computing. The principle of working with a scientific calculator is as follows: enter the number with which the calculation will be performed, then press the function or operation button, then, if required, another number, for example, a degree, at the end - an equal sign.

• - inverse function for sin, cos, tan, switches the interface to other functions
• - natural logarithm to base “e”
• [ (] And [) ] - introduces parentheses
• - displays the integer part of a decimal number
• - hyperbolic sine
• - sine of a given angle
• - squaring (formula x^2)
• - calculates the factorial of the entered value - the product of n consecutive numbers, starting from one to the entered number itself, for example 4!=1*2*3*4, that is 24
• - converts from decimal form to format in degrees, minutes, seconds.
• - hyperbolic cosine
• - cosine of the angle
• - raising x to step. igrik (formula x^y)
• [y√x]- extracting the root to the y power of x
• - Pi number, gives the Pi value for calculations
• - hyperbolic tangent
• - online tangent, tg
• - helps to raise to the power of 3, to a cube (formula x^3)
• [3√x]- extract the cube root
• - switches entering numbers in exponential notation and back
• - allows you to enter data in exponential notation.
• - allows us to calculate the remainder when dividing one number by another
• - calculates the decimal logarithm
• - raising ten to an arbitrary power
• - calculates the reciprocal value
• - Raising Euler's number to a power
• - cuts off the whole part, leaving the fractional part
• - inverse hyperbolic sine
• - arcsine or inverse sine, arcsin or 1/sin
• - conversion of angle in degrees, minutes and seconds to decimal degrees, more details
• - inverse hyperbolic cosine
• - arcosine or inverse. cosine arccos or 1/cos
• - calculates Pi multiplied by two
• - return hyperbolic tangent
• - arctangent or inverse tangent, arctg

How to use MR MC M+ M- MS

How to use an engineering calculator - with examples

How to raise to a power

To construct, for example, 12^3, enter in the following sequence:

12 [ x y] 3 [=]

12, “x to the power of igrik” key, 3, equal sign [=]

Answer: 1728

How to find the cube root

Let's say we are taking the cube root of 729, press in this order:

729 [=]

729, [3 √x] “cube root of x”, equalities [=]

How to find a root on a calculator

Problem: Find the square root of 36.

Solution: it’s simple, click like this:

36 [ y√ x] 2 [=]

36, [y √x] “root of x, to the power igrik”, the power we need is 2, equal to [=]

Using this function you can find the root to any power, not just the square one.

How to square

For squaring, the online computing program contains two functions:

“x to the power of igrik”, “x squared”

The sequence of data entry is the same as before - first the original value, then “x^2” and equals, or if not a square, but an arbitrary number, you need to press the “x^y” function, then indicate the required degree and also press ".

For example: 45 6 [=]

Answer: forty-five in the sixth step. equals 8303765625

Trigonometric calculator online - examples

How to calculate online sines and cosines, tangents

Please note that the site can handle both degrees, radians and grads.

1 rad = 57.3°; 360° = 2π radian, 1 degree = 0.9 degrees or 1 degree = 0.015708 radian.

To enable one or another measurement mode, press the desired button:

where Deg - degrees, Rad - measurement in radians, Grad - in degrees. By default, the calculation mode in degrees is enabled.

As a simple example, let's find the sine of 90 degrees. Click:

90 [=]

Answer: one

Other trigonometric functions are also calculated, for example, let's calculate the cosine of 60°:

60 [=]

Solution: 0.5

In a similar way, the inverses are calculated trigonometric functions online on CALCPRO- arcsine, arccosine, arctangent, as well as hyperbolic functions sinh, cosh, tanh.

To enter them, you need to switch the interface by pressing , new buttons will appear - asin, acos, atan. The order of data entry is the same: first the value, then the symbol of the desired function, be it acsine or arccosine.

Conversion with Dms and Deg button on calculator

Allows you to convert an angle from degrees, minutes and seconds format to decimal degrees for calculations. performs a reverse translation - into the “degrees” format; minutes; seconds."

For example, angle 35 o 14 minutes 04 seconds 53 tenths of a second will be converted to tenths:

35,140453 [=] 35,23459166666666666666

Let's convert to the previous format: 35.23459166666666666666 [=] 35.140453

Decimal logarithm online

The decimal logarithm on a calculator is calculated as follows, for example, look for log unit to base 10, log10(1) or log1:

1 [=]

It turns out 0 in the end. To calculate lg100, press this:

100 [=]

Solution: two. How to check yourself? What is a decimal logarithm anyway - log to base 10. In our example, 2 is the power to which you need to enter the base of the logarithm, that is, 10, to get 100.

The natural logarithm is also calculated, but with the button.

How to use memory on a calculator

Existing memory buttons: M+, M-, MR, MS, MC.

The MS operation will help you add data to the program memory so that you can then carry out further calculations with it.

The MR will display the information stored in memory for you. MC will delete any data from memory. M- will subtract the number on the online display from the one stored in memory.

Example. Let's enter one hundred and forty-five into the program memory:

145

After carrying out other calculations, we suddenly needed to return the memorized number to the screen of the electronic calculator, simply click:

The screen will display 145 again.

Then we count again, count, and then decide to add, for example, 85 with the memorized 145, for this we press , or to subtract 85 from the memorized 145. In the first case, after returning the final number from memory with the button, the result will be 230, and in the second, after pressing, the result will be 60.

The site's engineering calculator will quickly and accurately perform complex calculations, greatly simplifying your tasks.

The list of calculators and functionality will expand, just add the site to your bookmarks and tell your friends!