Verifiers

Verifier numbers EAN-13 preview

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

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31436

Verifiers

Verification ISBN preview

Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?

Calculator allows you to verify the ISBN number entered.

21401

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.

19153

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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Speed bowling ball

The calculator calculates the average speed of the bowling ball thrown from the offside line for the entry in field settings bowling.

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Generator ideal body weight according to the formula Lorenz

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Map Scale Converter

Calculator allows to determine the actual distance corresponding to the distance on the map with the specified scale. If the map at 1:500,000 scale the input field, enter the value 500000.

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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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Sieve of Eratosthenes

The program generates the prime numbers in a given range using the sieve of Eratosthenes algorithm.