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UART 115200 Baud Error Calculator
Validate 115200 baud configurations from clock and divider rounding before debugging serial framing issues.
Popular 115200 checks
16 MHz clock: common on low-cost MCU boards
48 MHz clock: USB-capable MCUs
72/80 MHz class: high-speed MCU families
Why this query matters
115200 is one of the most common default UART baud rates. Small divider rounding mismatches can still cause unreliable logs when both ends have clock drift.
FAQ
Is ±2% error always safe?
Not always. Combined TX/RX clock errors and line conditions determine real tolerance.
Should I switch oversampling mode?
Often yes. Trying x8 or x16 can change divider rounding and reduce baud mismatch.
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