Free Developer Tools

A curated toolkit of free converters and calculators for developers, CS students, and engineers. 8 tools across 5 categories — no sign-up required.

Number Systems

Precision number-format converters for embedded systems, graphics programming, and low-level debugging.

Convert 32-bit hex to an IEEE 754 float with a bit breakdown.

Convert a decimal float to 32-bit IEEE 754 hex.

Convert infix, postfix, and prefix expressions with step-by-step stack operations.

Convert infix to postfix or prefix, step by step.

Convert postfix or prefix to infix using a stack.

Convert between postfix and prefix, step by step.

Convert salary amounts between yearly, monthly, weekly, daily, and hourly rates.

Convert salary between yearly, monthly, weekly, and hourly rates.

Calculate percentage decline and compare changes between values.

Calculate the percentage decrease between two values.

Convert centimeter and millimeter measurements into international ring sizes.

Convert centimeters or millimeters to international ring sizes.