calc.engineer / General & Math / Log Calc

Log Calc v1.0.0

Compute logarithms of a positive number in any base. Returns the custom-base logarithm, natural logarithm (ln), common logarithm (log10), and binary logarithm (log2). Useful for signal processing (decibel calculations), information theory (entropy in bits), pH chemistry, and general scientific computation. Uses the change-of-base formula log_b(x) = ln(x) / ln(b). Feeds into exponent_calc for inverse operations and scientific_notation for order-of-magnitude analysis.

← from exponent_calc.resultfeeds exponent_calc →feeds scientific_notation →
The positive number to compute the logarithm of
The logarithm base (default 10). Must be positive and not equal to 1
Fill in the inputs and Compute to see the structured result.

From an agent (MCP) or the API

curl -X POST https://calc.engineer/api/log_calc \
  -H "Content-Type: application/json" \
  -d '{"value": …, "base": …}'

MCP: connect to https://calc.engineer/mcp and call log_calc.

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