Significant Figures Converter

Round numbers to the desired significant figures

Significant Figures Rules

  • 1. All non-zero digits are significant (123 has 3 sig figs)
  • 2. Zeros between non-zero digits are significant (102 has 3 sig figs)
  • 3. Leading zeros are not significant (0.0012 has 2 sig figs)
  • 4. Trailing zeros after decimal are significant (1.200 has 4 sig figs)
  • 5. Trailing zeros in whole numbers may or may not be significant