Verifiers

Verifier numbers EAN-8 preview

Verifier numbers EAN-8 Calculator allows you to verify the number entered EAN-8.

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Verifiers

Verification ISBN preview

Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?

Calculator allows you to verify the ISBN number entered.

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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.

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Verifiers

Verifier numbers EAN-13 preview

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

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Math

Arabic numbers Converter - Roman

Calculator converts numbers to roman Arabic or Roman to Arabic vice versa. The maximum value that the calculator correctly parse the number 3999.

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Life

Rainwater tank

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

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Employee

Calculator average revenue per employee in the company

Calculator on the basis of the specified amount paid salaries and number of employees, calculates the average annual and

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Building

Insulation of wall

Jak policzyć izolację ścian?

Calculator allows you to calculate the amount of insulation panels needed to cover the walls of the building using the "light wet" or "dry light" methods.

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Employee

How do I calculate vacation? Calculator dimension leave in Poland

jak wyliczyć urlop wypoczynkowy? jak obliczyć urlop? jak się liczy urlop wypoczynkowy?

Calculator by entering the type of secondary education and the start and end dates of employment shall calculate the chargeable period of annual leave.