About EmbedCalc
EmbedCalc is a free collection of calculators for embedded and electronics engineers — bit timing for UART/SPI/I2C/CAN, LED resistors and voltage dividers, RC/LC filters, C struct padding, CRC, watchdog timeouts, motor and power tools, and more. Every tool runs in your browser, needs no account, and gives you the answer in a couple of clicks.
What makes it different
Most calculators stop at a number. EmbedCalc takes the extra step that engineers actually care about: turning that result into a real, purchasable part. The built-in "Find Component" feature queries live distributor data (Mouser, DigiKey) to show in-stock parts with current pricing — so a calculation becomes something you can actually buy.
- No account, no bloat — open a tool, get your answer, leave.
- Practical, not just formulas — each tool includes worked examples and real-world tips.
- Calculation → real components — live stock and price, not stale data.
- Firmware-friendly — code-generating tools (CRC, register maps, struct layout) built for embedded work.
Who is behind it
EmbedCalc is built and maintained by an independent embedded-systems developer with a background in MCU/MPU firmware, board bring-up, and hardware bring-up. It started as a personal set of everyday engineering tools and grew into a public site.
Feedback
Found a bug, a wrong value, or want a tool added? That feedback directly shapes the site — please reach out on the Contact page. See also our Privacy Policy.