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Keystone field

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Conversion between number bases

Converter allows you to convert numbers between number bases - binary (binary), trójkowym, czwórkowym, Friday, szóstkowym, siódemkowym, octal (octal), dziewiątkowym, decimal (decymalnym) jedenastkowym, dwunastkowym, trzynastkowym, czternastkowym, piętnastkowym, hexadecimal (hex). Typed characters that are not numbers and the letters A, B, C, D, E, F are ignored.      
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Trigonometric functions calculator

Calculator by entering an angle in degrees or radians calculated values ​​of the basic trigonometric functions.
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Multiplication table

Multiplication table 20 × 20 gives the opportunity to multiply their arbitrary natural numbers (1-20).
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Field and volume of a sphere

Calculator by entering the radius of the sphere is calculated its surface and volume.      
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Verifiers

Verification of the REGON number in Poland

Verifier allows you to validate entered REGON number
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Statutory interest calculator - calculating the percentage of online in Poland

Jak obliczyć odsetki ustawowe?
Free online calculator statutory interest - can quickly calculate statutory interest.