Verifiers

Verification of the social security number in Poland

It presents data deriving from the unique social security number, such as date of birth, sex, serial number and check its correctness.

Long description

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51871

Verifiers

Verification ISBN preview

Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?

Calculator allows you to verify the ISBN number entered.

35570

Verifiers

Verifier numbers EAN-13 preview

Verifier numbers EAN-13 Calculator allows you to verify the number entered EAN-13.

28211

Verifiers

Verification of the ISSN

Calculator allows you to verify the number entered ISSN (International Standard Serial Number serial publication). FAQ: How ISSN number?

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Metal weight calculator

the calculator calculates the mass of metal parts according to the form of the product and the type of metal

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Rainwater tank

The calculator calculates the amount of collected rainwater from the roof of the given dimensions. Long description

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Calculator / BMI - Calculate Body Mass Index indicator

jak obliczyć BMI?

The online BMI calculator calculates the body mass index - BMI - based on height and weight entered.

44527

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Amount of paint necessary to paint the room

Calculator to estimate the amount of paint needed to paint a room by painting a single and double.

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Number of tetrahedral

Tetrahedral numbers are the natural numbers, for which it is possible to construct a tetrahedron formnego of bullets. They are a special case of the pyramidal numbers.