Verifiers

NIP correctness in Poland

Jak sprawdzić poprawność numeru NIP?

Verifier allows you to validate the tax identification number entered

Tax identification number is a code used to identify taxpayers in Poland, which consists of 10 digits.

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72938

Verifiers

Verification ISBN preview

Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?

Calculator allows you to verify the ISBN number entered.

60275

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.

50218

Verifiers

Verifier numbers EAN-13 preview

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

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36184

Generators

Pseudo-random number generator without repetition

Calculator generates random numbers without repetition from 0 to n-1.

62103

Math

Mean and covariance matrix calculator

Covariance is a measure of the covariance of two variables (X and Y). The calculator calculates the average for the sample and the covariance between variables. Sets of X and Y must be the same number.

19450

Health

Maximum Heart Rate

The calculator allows you to calculate the index of maximum heart rate (MHR) for your body

22699

Financial

Interest coverage

Calculator to the data calculated interest coverage ratio. WPO - tells you how many times the possibility of payment of interest is higher than the interest burden. The higher the level, the company feels less burdensome to pay interest.

3579775

Building

Calculator floor panels

Calculator based on the dimensions of the area to put the panels and occupancy data on number of panels in one package, calculate how much you have to buy packages of panels to cover the entire room.