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Try a quadratic equation
Full calculatorFind the roots of ax² + bx + c = 0.
x² − 5x + 6 = 0
Example result
x = 2, 3
Show working
D = (−5)² − 4 × 1 × 6 = 1 x = (5 ± √1) / 2 = 2, 3
Displayed values are approximations, up to 10 significant digits.Try constant acceleration
Full calculatorCalculate velocity and displacement at constant acceleration.
v = v₀ + at
Example result
v = 6 m/s · Δx = 9 m
Show working
v = 0 + 2 × 3 = 6 m/s Δx = 0 × 3 + ½ × 2 × 3² = 9 m
Displayed values are approximations, up to 10 significant digits.Try molar concentration
Full calculatorCalculate molarity from amount and solution volume.
c = n / V
Example result
c = 0.2 mol/L
Show working
V = 500 / 1000 = 0.5 L c = 0.1 / 0.5 = 0.2 mol/L
Displayed values are approximations, up to 10 significant digits.Browse by subject
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Each calculator includes assumptions and references. Results are approximations; distinguish display precision from measurement significant figures.
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GuideHow to Calculate pH: From Hydrogen Ion Concentration and Back
Learn to calculate pH from hydrogen ion concentration with pH = −log₁₀[H⁺] and to reverse it with 10⁻ᵖᴴ — fully substituted examples, why one pH unit means ten times the concentration, and a free browser tool for checking.
September 29, 2026Read article
GuideHow to Find the Equivalent Resistance: Series and Parallel Circuits
Learn the two rules of equivalent resistance — series adds up (R = R₁ + R₂ + …) and parallel combines reciprocals (1/R = 1/R₁ + 1/R₂ + …) — with fully substituted examples, why parallel shrinks the total, and how to tackle mixed circuits.
September 29, 2026Read article
GuideMatrix Determinant and Inverse: 2×2 and 3×3 Worked Examples
Learn to compute the determinant and inverse of 2×2 and 3×3 matrices with fully substituted examples. Covers the 2×2 inverse formula, cofactor expansion for 3×3, why det = 0 means no inverse, and the A × A⁻¹ = I check.
September 28, 2026Read article
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CSV to JSON Converter
Convert between CSV and JSON. Supports comma, tab and semicolon delimiters with optional header rows.
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