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Calculate significant figures in numbers and expressions Master significant figures with our free, easy-to-use calculator! Perfect for students, scientists, and engineers. The SigFig Calculator extension helps you calculate significant figures in numbers and complex mathematical expressions with detailed, step-by-step explanations. No more guessing about sig fig rules! Key Features: ✓ Calculate sig figs for single numbers and complex expressions ✓ Step-by-step explanations following standard sig fig rules ✓ Supports basic operations (+, -, ×, ÷, ^) and parentheses ✓ Modern, intuitive interface with clear visual feedback ✓ No internet connection required - works offline ✓ Free with no ads or hidden costs How it works: Click the extension icon Enter your number or expression (e.g., "12.34", "2.5*3.67") Click "Calculate" or press Enter View the result with significant figure count and detailed explanation Sig Fig Rules Applied: • Non-zero digits are always significant • Zeros between non-zero digits are significant • Leading zeros are never significant • Trailing zeros are significant only if there's a decimal point • For calculations: Addition/subtraction rounds by least number of decimals, multiplication/division uses least number of sig figs Perfect for chemistry, physics, engineering, and math students who need to properly report measurements with the correct number of significant figures. Privacy Promise: This extension requires no permissions and doesn't collect any personal data. All calculations happen locally on your device. Powered by SigFigsCalculator.pp.ua - your trusted source for significant figures calculations.