Programmer Calculator — GetCalcMaster

Programmer calculator for base conversion and bitwise work

The Programmer Calculator is built for day-to-day developer tasks: converting between bases (hex/dec/bin), inspecting bit patterns, and validating bitwise operations. It’s ideal for debugging flags, masks, protocol fields, and “why is this value weird?” moments.

Open the tool

• Programmer Calculator — base conversion + bitwise operators
• Notebook — keep small worked examples and verification notes

Base conversion: quick mental model

• Binary is base-2 (digits 0–1). Each bit position is a power of 2.
• Hex is base-16 (digits 0–9 + A–F). Each hex digit represents 4 bits.
• Decimal is base-10 (what we use every day).

Manual test cases

• Base conversion: enter 255 and confirm it displays as 0xFF (hex) and 11111111 (binary).
• Bitwise AND: 0b1100 & 0b1010 → 0b1000
• Bitwise OR: 0b1100 | 0b1010 → 0b1110
• XOR: 0b1100 ^ 0b1010 → 0b0110
• Shift: 1 << 8 → 256

Signed vs unsigned (two’s complement intuition)

When you view a bit pattern as a signed integer, the highest bit typically acts as the sign bit. The same bits can represent very different numbers depending on whether you interpret them as signed or unsigned — so always confirm the mode/word size before trusting a negative value.

Verification tips

• Round-trip conversion: copy the hex form, paste it back, and confirm you get the original value.
• Edge cases: test 0, max values (all 1s), and values with a single bit set.
• Masks: sanity-check a mask by converting it to binary and visually confirming which bits are 1.

Learn more (worked guides)

• Binary → decimal — positional weights and sanity checks
• Decimal → hex — division/remainder method + verification
• Hex → binary — 4-bit grouping shortcuts

When you’re done with bit-level work, cross-check numeric results in General Calculator for standard arithmetic.