Significant Figures CalculatorBy kakarwalikhan313 / February 18, 2026 🔢 Significant Figures Calculator Enter Number: Round to specified significant figures Number of significant figures: Calculate Results: Number entered: Significant Figures: Scientific Notation: Decimal places: Number type: Rounded to significant figures: 📝 Explanation: Rules for Significant Figures: Non-zero digits are always significant Any zeros between significant digits are significant Leading zeros are not significant Trailing zeros in a decimal number are significant Trailing zeros in a whole number may or may not be significant 📚 Examples: 123.45 (5 sig figs) 0.00456 (3 sig figs) 1000 (1 or 4 sig figs) 1000. (4 sig figs) 1.2300 (5 sig figs) 0.000789 (3 sig figs)