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Convert between Hex, Decimal, Octal and Binary instantly. See all bases updating in real time as you type. Built for developers, CS students, and engineers who need fast, accurate results. WHAT YOU CAN DO Convert seamlessly between 4 number bases: → Hexadecimal (Base 16) → Decimal (Base 10) → Octal (Base 8) → Binary (Base 2) Perform bitwise operations: → AND, OR, XOR, NOT → Left Shift, Right Shift Work with precision: → Choose your bit width: 8, 16, 32, or 64, unlimited bits → See every bit visualized in real time → Review past calculations with built-in history Clean and focused: → Dark mode support → No clutter, no bloat — just the tools you need → No account required Whether you're debugging a network mask, checking a register value, or studying for a CS exam — this is the calculator that stays out of your way and gets the job done. Terms of Use: …
Every shipping app on the App Store has gone through the same decisions you're working through right now: which screenshot goes first, what caption sits over it, which device frame to show, what color the background should be. The store listing above is Programmer Calculator - HexBin's answer to those questions — public, real, and live in the store.
Notice the icon in particular — it's the one thing users see in every context: search results, the home screen, push notifications. Programmer Calculator - HexBin's icon is a tiny canvas that has to work at 60×60 and 1024×1024 alike. Tap "View on App Store" above for the full screenshot set Apple didn't surface through their API.
Want to see how other Developer Tools apps approach the same problem? Browse more Developer Tools apps in the showcase.
Open LaunchShots and design your App Store & Google Play screenshots — pick a device frame, drop captions, ship in minutes. Free, in your browser.
Open the screenshot editor →