--- title: "Quadratic Equation Calculator | Formula Solver Tool | XTRAW Tools" description: "Solve quadratic equations from coefficients a, b, and c using the quadratic formula with a free browser-based calculator." url: "https://xtraw.com/tools/industry-tools/education-tools/quadratic-equation-calculator" date: "2026-08-20T10:51:52+00:00" language: "en-GB" --- [Typing Speed Calculator](https://xtraw.com/tools/industry-tools/education-tools/typing-speed-calculator)[Basic Probability Calculator](https://xtraw.com/tools/industry-tools/education-tools/basic-probability-calculator) [![Quadratic Equation Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/xtraw-quadratic-equation-calculator-360x360.jpg)](https://xtraw.com/images/virtuemart/product/xtraw-quadratic-equation-calculator-360x360.jpg "Quadratic Equation Calculator from XTRAW Tools") popular [Back to: Education Tools](https://xtraw.com/tools/industry-tools/education-tools "Education Tools") # Quadratic Equation Calculator Solve quadratic equations using coefficients a, b, and c. Use this free browser-based quadratic equation calculator from XTRAW Tools. **Quadratic Equation Calculator** helps you solve quadratic equations using coefficients a, b, and c. Use this free browser-based calculator from XTRAW Tools to compare inputs, estimate results, and plan your next step. ## How to Use the Quadratic Equation Calculator 1. Enter the required calculator inputs shown in the form. 2. Review the numbers, expression, equation, data set, ratio, date, or measurement assumptions. 3. Run the calculator, then adjust one input at a time to compare scenarios or check your work. ## What This Calculator Helps With Solve quadratic equations using coefficients a, b, and c. It is designed for students, teachers, algebra learners, test-prep users, and anyone solving quadratic equations who want a fast, browser-based result before relying on an instructor, textbook, advisor, professional source, healthcare provider, or specialist. - a: 1 - b: -5 - c: 6 ## Common Uses People use this calculator when they need a quick way to solve math, summarize data, check formulas, compare values, estimate timing, or verify measurement-based results. - **Math Solving:** Solve school, study, work, or everyday math problems using clear numeric inputs. - **Measurement:** Use measurements, values, ratios, data sets, or equations to calculate a specific result. ## Formula or Method x = \[-b ± sqrt(b² - 4ac)\] / 2a ## Example **Example inputs:** a: 1; b: -5; c: 6 **Example result:** Using the default inputs, the solutions are x = 3 and x = 2. ## Related Tools - [Scientific Calculator](https://xtraw.com/tools/scientific-calculator) - [Exponent Calculator](https://xtraw.com/tools/exponent-calculator) - [Logarithm Calculator](https://xtraw.com/tools/logarithm-calculator) - [Proportion Calculator](https://xtraw.com/tools/proportion-calculator) - [Ratio Calculator](https://xtraw.com/tools/ratio-calculator) - [Fraction Calculator](https://xtraw.com/tools/fraction-calculator) ## Quadratic Equation Calculator FAQ ### Is the Quadratic Equation Calculator free? Yes. This calculator is free to use on XTRAW Tools. ### Do I need to create an account? No. XTRAW tools are designed for browser-based use without requiring an account. ### Are the results exact? Results may be estimates depending on the inputs, formula, rounding, and purpose of the calculator. Always verify important results before relying on them. **Disclaimer:** This calculator is provided for general informational and convenience purposes only. It is not legal, financial, medical, pregnancy, fertility, engineering, academic, safety, or professional advice. Always verify important results with a qualified professional, instructor, authoritative source, or appropriate specialist before making decisions. **Related Tools** ![Tooltip]() [![Scientific Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-scientific-calculator-360x360_230x230.jpg) Scientific Calculator](https://xtraw.com/tools/industry-tools/education-tools/scientific-calculator "Scientific Calculator") Perform advanced arithmetic, powers, roots, logarithms, trigonometry, and scientific math. Use this free browser-based scientific calculator from XTRAW Tools. Custom prototype for related products [![Exponent Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-exponent-calculator-360x360_230x230.jpg) Exponent Calculator](https://xtraw.com/tools/industry-tools/education-tools/exponent-calculator "Exponent Calculator") Calculate powers using a base and exponent. Use this free browser-based exponent calculator from XTRAW Tools. Custom prototype for related products [![Logarithm Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-logarithm-calculator-360x360_230x230.jpg) Logarithm Calculator](https://xtraw.com/tools/industry-tools/education-tools/logarithm-calculator "Logarithm Calculator") Calculate logarithms for a number and base. Use this free browser-based logarithm calculator from XTRAW Tools. Custom prototype for related products [![Proportion Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-proportion-calculator-360x360_230x230.jpg) Proportion Calculator](https://xtraw.com/tools/industry-tools/education-tools/proportion-calculator "Proportion Calculator") Solve proportions and missing values in equivalent ratios. Use this free browser-based proportion calculator from XTRAW Tools. Custom prototype for related products [![Ratio Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-ratio-calculator-360x360_230x230.jpg) Ratio Calculator](https://xtraw.com/tools/industry-tools/education-tools/ratio-calculator "Ratio Calculator") Simplify ratios and compare proportional values. Use this free browser-based ratio calculator from XTRAW Tools. Custom prototype for related products [![Fraction Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-fraction-calculator-360x360_230x230.jpg) Fraction Calculator](https://xtraw.com/tools/industry-tools/education-tools/fraction-calculator "Fraction Calculator") Calculate fraction addition, subtraction, multiplication, division, and simplification. Use this free browser-based fraction calculator from XTRAW Tools. Custom prototype for related products **Related Categories** ![Tooltip]()[![Math Calculators category image](https://xtraw.com/images/virtuemart/category/17_math_calculators.jpg) Math Calculators](https://xtraw.com/tools/calculators/math-calculators "Math Calculators") Custom prototype for related categories [![Algebra Calculators category image](https://xtraw.com/images/virtuemart/category/145_algebra-calculators.jpg) Algebra Calculators](https://xtraw.com/tools/calculators/math-calculators/algebra-calculators "Algebra Calculators") Custom prototype for related categories [![Scientific Calculators category image](https://xtraw.com/images/virtuemart/category/149_scientific-calculators.jpg) Scientific Calculators](https://xtraw.com/tools/calculators/math-calculators/scientific-calculators "Scientific Calculators") Custom prototype for related categories [![Education Tools category image](https://xtraw.com/images/virtuemart/category/086_education_tools_350x350.jpg) Education 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