Calculator Guide

Logarithms

Hissab supports natural log, base-10 log, and base-2 log.

Forms

  • Natural log — log 20
  • Natural log alias — loge 20
  • Log base 10 — log10 20
  • Log base 2 — log2 20
log 20
loge 20
log10 20
log2 20

log is base e, not base 10. Use log10 when you want base 10.

Change of base

For another base, use the identity log(x) / log(base).

log 343 / log 7

Examples

log2 1024
log10 1000
log 100

Common mistakes

  • ln 100 is invalid — use log 100 or loge 100.
  • -log10 0.00001 is invalid as a leading negation on a prefix function. Calculate the log first, then negate separately if needed.