MagicKit.ai

Significant Figures Calculator

Count and round significant figures. Essential tool for scientific calculations and lab work.

How to Count Significant Figures

  1. 1 Enter a number in standard or scientific notation
  2. 2 Click 'Count Sig Figs' to analyze the number
  3. 3 View the count of significant figures
  4. 4 Optionally round to a specific number of figures
  5. 5 Copy the result in scientific notation if needed

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Last updated: January 15, 2026 · v2.1