Convert Base 7 to Base 6

Convert Base 7 (base 7) to Base 6 (base 6) instantly and accurately.

Selected Base 7 (base 7) - available characters: 0, 1, 2, 3, 4, 5, 6

Conversion Formula

Step-by-step example using the value 42 (decimal):

Convert Base 7 (base 7) → Base 6 (base 6)

Step 1: Expand each digit of 60 (base 7) by position:

        6 × 7^1 = 42
        0 × 7^0 =  0
        ────────────
        Sum = 42 (decimal)

Step 2: Divide 42 by 6 repeatedly (read remainders upward):

        42 ÷ 6 = 7  r 0
         7 ÷ 6 = 1  r 1
         1 ÷ 6 = 0  r 1
        Read remainders upward: 110

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Result:  60 (base 7) = 110 (base 6)

About Base 7

Septenary (base 7) uses digits 0-6. Each position is a power of 7: 7⁰=1, 7¹=7, 7²=49. Seven is prime, so every fraction p/q (q not divisible by 7) produces a purely repeating expansion. Seven days of the week derive from Babylonian astronomy (the 7 naked-eye celestial objects). Reed-Solomon codes used in QR codes and Blu-ray draw on prime-field properties of GF(7). Conversion: decimal 42 = 6×7+0 = 60₇.

About Base 6

Senary (base 6) uses digits 0-5. Each position is a power of 6: 6⁰=1, 6¹=6, 6²=36. Six is divisible by 1, 2, 3, and 6, making fractions clean: 1/2 = 0.3, 1/3 = 0.2 (both terminating). Native to the Ndom language of Papua New Guinea. Standard dice produce one uniform senary digit per roll. Donald Knuth noted senary's compact multiplication table. Conversion: decimal 42 = 1×36+1×6+0 = 110₆.

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