Math Calculators
Pick a calculator below. Every one runs entirely in your browser and shows the worked steps — nothing here is placeholder data.
Percentage calculator
Fraction calculator
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LCM & GCF calculator
Ratio calculator
Algebra calculator — solve ax + b = c
Quadratic equation calculator — solve ax² + bx + c = 0
Slope, distance & midpoint calculator
Area & perimeter calculator
Volume calculator
Mean, median & mode calculator
Probability calculator
Scientific calculator
Use + − × (as *) ÷ (as /) ^ ( ) and functions: sqrt, sin, cos, tan, log, ln, abs, pi, e.
GPA calculator
Add each course's credit hours and letter grade (4.0 scale).
Age calculator
BMI calculator
BMI is a general screening tool, not a medical diagnosis. Talk to a healthcare provider for personalized guidance.