Toggle 32/64-bit grids. Click bits to flip them live and see decimal recalculate. Shows popcountll, clzll, ctzll, and MSB instantly.
Yes, completely free. No sign-up, no credit card, no usage limits.
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Yes. All tools are fully responsive and work on phones, tablets, and desktops.
Decimal Value
42
Click any bit to flip it — index 0 = LSB (rightmost)
__builtin_popcountll
3
Set bits
__builtin_clzll
26
Leading zeros
__builtin_ctzll
1
Trailing zeros
MSB position
5
Highest set bit
Binary
00000000000000000000000000101010Hexadecimal
0x0000002A