Choose language

PL, EN, ES, DE, FR, RU


Popular calculators

Voltage drop calculator from current for single-phase and three-phase circuits

With this calculator you can calculate voltage drops for single-phase and three-phase AC circuits calculated from the rated current. You will also calculate wire length, wire diameter, wire cross-sectional area, voltage or current.

How to convert cat age to human age? Cat age calculator

How to convert cat's age into human's age? How old is a cat in human years? How long does a cat live? Cat Age Calculator can help you with these and other questions. By giving the cat's age, we will find out how old he would be if he were a human. We can also check what age a cat would be at our age.

Matrix 2x2 calculator

Thanks to the mathematical calculator, you can easily calculate the determinant of the matrix, find the complement matrix, the transposed matrix, and the inverse matrix.

Ventilation efficiency calculator in the bathroom, toilet or kitchen

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.

Floor panels and materials calculator

Flooring Calculator is a complete tool to calculate the costs and materials needed to lay a wooden floor. Thanks to the calculator, we will find out how many packages of panels, underlay, vapor barrier foil under the panels, skirting boards, connectors, corners and plugs will be needed, as well as the cost of all materials including labor.

Brinell hardness scale

With this calculator you can calculate the HB hardness or the hardness of metals based on the Brinell hardness test.

ADFGX / ADFVGX cipher - encoder / decoder

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

Gudermannian function - hyperbolic amplitude

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.

Timer 555 Monostable, Astable - Output pulse duration calculator

Using this calculator, you will calculate the pulse duration of the output pulse of the NE555 IC in monostable or astable mode of operation.

Quartiles Q1, Q2, Q3 of the interval series

With this statistical calculator, you will learn how to calculate the lower quartile, middle quartile, and upper quartile of an interval resolution series.

Triangle calculator -height, area, perimeter, sides

Triangle calculator will help you calculate the area, perimeter, sides, height, angles of any triangle, right triangle and equilateral.

Calculator of reactive power from voltage and current

The reactive power calculator in AC circuits will help you easily calculate reactive power, voltage and current.

Polygon - diagonals, height, area, perimeter, sides

Regular polygon calculator will help you calculate the diagonals of any regular polygon, side length, height, area, perimeter and radius of the circumscribed circle and the radius of the circle inscribed in a regular polygon.

Spelling words with the phonetic alphabet - converter, translator

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

Price, discount and discount rate of a treasury bill

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

Life expectancy and actual age by health - calculator

The life expectancy and health age calculator will let you know your life expectancy. First of all, it will make you aware of what factors affect your life expectancy and your real age according to your health.

Resting Metabolic Rate (RMR) calculator

Using the calculator, you will calculate the resting metabolic rate (RMR) and the amount of calories needed to supplement, i.e. burned by the body while resting.

Bicycle tire pressure calculator

With this calculator, you will calculate the exact tire pressure required for your bicycle tires on the front and rear wheels depending on the load, wheel size, bicycle weight, etc.

Dilution of solutions

Using this calculator, you can calculate the total volume of the solution after dilution and the volume of solvent added during dilution.

Four-square cipher - encoder / decoder

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



Online calculator

C
M+
M-
MR
log
10x
MS
MC
asin
acos
atan
ex
sin-1
cos-1
tan-1
ln
sin
cos
tan
π
√
x²
1/x
x!
xM
(
)
exp
7
8
9
÷
4
5
6
×
1
2
3
-
0
·
=
+
C
M+
M-
sin
sin-1
asin
MC
MS
MR
cos
cos-1
acos
log
ln
10x
tan
tan-1
atan
π
e
ex
exp
1/x
x!
7
8
9
(
)
xM
4
5
6
-
÷
x²
1
2
3
+
×
√
0
·
=