Engineering calculator online

We hasten to present to everyone a free engineering calculator. With it, any student can quickly and, most importantly, easily perform various kinds mathematical calculations online.

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

An engineering calculator can perform as simple arithmetic operations, as well as rather complex mathematical calculations.

Web20calc is an engineering calculator that has great amount functions, for example, as the calculation of all elementary functions. The calculator also supports trigonometric functions, matrices, logarithms and even plotting.

Undoubtedly, Web20calc will be of interest to the group of people who are looking for simple solutions types in search engines query: mathematical online calculator. The free web application will help you instantly calculate the result of any 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, PI constant. For complex calculations parentheses should be included.

Features of the engineering calculator:

1. basic arithmetic operations;
2. work with numbers in a standard form;
3. calculation of trigonometric roots, functions, logarithms, exponentiation;
4. statistical calculations: addition, arithmetic mean or standard deviation;
5. application of a memory cell and user 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:

Extraction of roots (square root, cubic root, as well as the root of the n-th degree);
ex (e to x power), exponent;
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: base two binary logarithm is log2x, base ten base ten logarithm is log, natural logarithm is ln.

This engineering calculator also includes a calculator of quantities with the ability to convert physical quantities for various measurement systems - computer units, distance, weight, time, etc. With 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 will be useful to put the cursor in the input field). Among other things, data can be entered using the buttons of the calculator itself.

To build graphs in the input field, write the function as indicated in the example field or use the toolbar specially designed for this (to go to it, click on the button with the icon in the form of a graph). To convert values, press Unit, to work with matrices - Matrix.

The modern way of life requires constant dynamics. Making calculations on a calculator, we noticeably save our time, do not risk making mistakes and get exact result. Thanks to the invention of this device, many people have forgotten what shortages and errors in calculations are. However, the calculator is different from the calculator, and if primitive computational functions can be done on mathematical model, then the most complex calculations can be made only with the help of engineering. From now on, acquire this miracle modern technology no need - just ask for help from our engineering calculator online! The program works without additional installation - just go to the electronic page and start acting.

Online engineering calculator functions

A math-type calculator will only help you make primitive calculations. With it, you can do what we were taught in primary school high school:

• addition;
• subtraction;
• division;
• multiplication;
• interest subtraction;
• raising a number to a power;
• finding the square root.

Engineering calculator online includes all these and additional functions that are necessary for complex calculations. Now you do not have to spend extra money to buy this device, because you can make calculations on our website.

In addition to the above, our universal calculator will help you perform the following calculations:

Location:

• sine of the angle;
• tangent;
• cosine;
• cotangent;
• arcsine;
• arc tangent;
• arc cosine;
• inverse tangent.

Online engineering calculator interface

Performing all of the above calculations is quite simple. Our online engineering calculator has a clear interface, and therefore it is very convenient to work with it. In its appearance, it completely imitates a real calculator, so you do not need to study the functions for a long time. Despite this, we enclose detailed instructions and descriptions of each key.

Using our program is also beneficial because the calculations are made instantly - you do not need to update the site page, because the calculator works in flash mode. A huge number of people use our program every day. Among them are students higher institutions, teachers, architects, scientists and other people interested in the accuracy of calculations. The online engineering calculator does not require downloading and installing additional plugins, so you can start using it right now!

Math-Calculator-Online v.1.0

The calculator performs the following operations: addition, subtraction, multiplication, division, working with decimals, extracting the root, raising to a power, calculating percentages, and other operations.

Solution:

How to use the math calculator

The algorithm of the online calculator with examples

Addition.

Integer addition natural numbers { 5 + 7 = 12 }

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

Adding decimal fractional numbers ( 0.3 + 5.2 = 5.5 )

Subtraction.

Subtraction of whole natural numbers ( 7 - 5 = 2 )

Subtraction of whole natural and negative numbers ( 5 - (-2) = 7 )

Subtraction of decimal fractional numbers ( 6.5 - 1.2 = 4.3 )

Multiplication.

Product of whole natural numbers ( 3 * 7 = 21 )

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

Product of decimal fractional numbers ( 0.5 * 0.6 = 0.3 )

Division.

Division of whole natural numbers ( 27 / 3 = 9 )

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

Division of decimal fractional numbers ( 6.2 / 2 = 3.1 )

Extracting the root from a number.

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

Extracting the root of decimals ( root(2.5) = 1.58 )

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

Extracting the root of the difference in numbers ( root (32 - 7) = 5 )

Squaring a number.

Squaring an integer ( (3) 2 = 9 )

Squaring decimals ( (2.2) 2 = 4.84 )

Convert to decimal fractions.

Calculating percentages of a number

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

Decrease the number 510 by 35% ( 510 - 510 * 0.35 = 331.5 )

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

This calculator tries to estimate the complexity of the calculation without a calculator (on a piece of paper) tasks using arithmetic operations addition, subtraction, multiplication and division.
The calculator determines the number of elementary operations in the example, gives the conditional complexity expressed in milliseconds required to calculate the example. The complexity is the sum of the elementary operations multiplied by the complexity factor (the time in milliseconds required to complete the operation). The explanation of elementary operations is given in the table at the bottom of the calculator.

Calculation result

Number of elementary operations

Complexity (calculation time)

Deciphering operations with an indication of complexity.
++ complexity 200, increase by one, for example, when multiplying 200 3000 - there will be one multiplication of 2 Zeros will be counted 3 and 5 times
+ difficulty 500, elementary addition e.g. 5+4
- difficulty 500, elementary subtraction, e.g. 3-2
* complexity 1000, elementary multiplication, for example 2*2
/ complexity 1000, division - the division operation is reduced to the sequential execution of multiplication and subtraction operations, and each time we figure out which factor to choose so that the product turns out to be slightly less than or equal to the current dividend. This elementary operation is counted in this column. The necessary multiplications and subtractions are calculated additionally.
0+ complexity 100, addition with zero - a special case is highlighted separately, since this is a simpler operation than addition.
0 complexity 100, substitution of zeros
°+ complexity 700, addition with unit transfer, for example 16+7 - contains two operations - elementary addition and unit transfer to the next digit.
=0 complexity 200, reduction - subtraction operations of equal values, for example 100-100
°- difficulty 600, borrow one when subtracting, for example, subtracting 11-9 will perform one borrow and one subtraction operation.
** complexity 400, repeated multiplication. it often happens that when performing elementary (and not only) multiplication operations, the same operations are performed. For example 25 33 will contain two elementary multiplications and one repetition, we can simply rewrite the result of multiplication 25 3 one more time.
*0 complexity 100, a special case of multiplication by zero
*1 complexity 200, a special case of multiplication by one
°* difficulty 700, multiplication carry, e.g. 23 4 - two elementary multiplications plus one carry (1) when multiplying 3 4
+- difficulty 300, sign change
<> complexity 500, permutation of subtrahends, performed if we try to subtract more from less
. complexity 500, floating point operations

Consider the calculation of complexity using the example (4567+987-8354)*32/25:
The example contains all four arithmetic operations.

Addition is performed first 4567+987=5554

As you can see, in this example there are three elementary additions: 7 + 7, 6 + 8, 5 + 9, each of which transfers one to the highest digit.

Then subtraction 5554-8354=-2800

Since it is subtracted from the smaller more, the result is negative, the operands are permuted before subtraction. The first two digits of 5,4 are reduced, then when calculating 3-5, an elementary subtraction is performed with a loan of one, then a simple subtraction of 8-1-5=2.

The third step is to perform the multiplication -2800*32=-89600

Since the first multiplier ends with zeros, we count their number in order to add zeros to the result at the end of the multiplication. Then we multiply 28 32. When multiplied by 3 8 and 2 8 is carried over to the next. discharge. 2 2 and 2*3 are just elementary multiplications. Total 4 elementary multiplications, 2 transfers, 2 counts.

Last action - division -89600/25=-3584

At each division step, the multiplier is selected in such a way that its product by the divisor is close to the number made up by the first digits of the current division remainder. This operation is counted as elementary division, after which multiplication and subtraction are performed, the complexity of which is calculated by analogy with the previous steps.
In particular, when dividing the first digits (86) by 25, we select the factor = 3. Next, the multiplication is 25 * 3-75, then the subtraction is 89-75 = 14.
In total, when calculating 89600/25, we have: 4 divisions and 4 subtractions, 8 products, 3 reductions, two multiplications with carry, when multiplying with carry, one addition is performed.

In the end, during the calculation of the entire example, 52 elementary operations were performed - taking into account the indicated weight coefficients, the total complexity is 28500. Thus, it will take about half a minute (28.5 seconds) to solve this example.

P.S. All time estimates and the complexity calculation algorithm itself are made on the basis of the author's subjective assumptions, comments and comments are welcome.

It's a small, easy-to-use program designed to make your day-to-day routine calculations easier and requires nothing more than your browser to complete.

You need to make calculations, perform a series mathematical operations, and in this moment didn’t have a regular electronic calculator or an appropriate program at hand? In this case, this simple and easy-to-use online calculator will become indispensable for you. You have the option to enter data using the visual interface buttons, or directly using the keyboard. The calculator performs all basic operations (addition, subtraction, multiplication, division). The presented mathematical calculator online also allows you to carry out calculations 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 are made a few years ago, and have a primitive set of functions. The calculator presented on our site is in no way inferior to the usual calculators for all, 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 in the lower right corner there is an online calculator. An online calculator can save you a lot of time 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. Pretty not simple task consists of taking a loan from a commercial bank. Many bankers and traders resort to using an online calculator when working with documents.

Calculator(lat. 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 conducts some type of calculation (deposit calculator, pad calculator, etc.)
4. Profession (the person who makes the calculation).

In the Soviet Union, the term “microcalculator” was used to refer to a small-sized computing device, which was first used in 1973 for the electronics B3-04 microcalculator. Just "calculators" called large desktop computing devices. Both desktop and microcalculators were officially called "ECVM - electronic keyboard computers."

At present, due to the fact that English language only the term "calculator" (calculator) is used, the term "microcalculator" is out of circulation.