Tools
Config-driven calculators and helpers—each tool doubles as an explainer page for search and sharing. Jump into a subject hub or scroll the full catalog.
By subject
Same grouping as your curriculum—e.g. chemistry calculators in one place.
All tools
Alphabetical list of published utilities Showing 289–336 of 564.
- formula calculator
Loan calculator
Same EMI engine as the EMI tool.
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Logarithm calculator
log_base(y) for any valid base.
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Logic gate simulator
Single gate output for 0/1 inputs.
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Logistic growth
N(t) with carrying capacity K.
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Logistic map (chaos demo)
Iterate x_{n+1}=r x_n(1−x_n).
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Lorentz force (magnetic part)
F = |q| v B sin θ (B contribution only).
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LU decomposition calculator
PA = LU with partial pivoting (n≤6).
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Lung volumes (tidal sketch)
Tidal volume from mL/kg and mass.
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Maclaurin series calculator
Taylor polynomial at 0.
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Magnetic field (long straight wire)
B = μ₀ I / (2πr) at perpendicular distance r.
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Mandelbrot preview (ASCII)
Low-res ASCII escape-time view.
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Mass–energy (E = mc²)
Rest energy in joules and MeV.
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Mass from moles calculator
Convert moles to grams using molar mass (g/mol).
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Math flashcard generator
Lines front|back.
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Math formula sheet generator
Pick topics for a text formula list.
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Math notes outline
Starter bullet outlines by topic.
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Math problem generator (toy)
Linear template from seed.
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Math revision planner
Spread topics across days.
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Matrix addition / subtraction
A ± B with same shape.
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Matrix determinant calculator
det(A) for n≤8.
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Matrix eigenvalues calculator
Real eigenvalues for 2×2 and 3×3.
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Matrix eigenvectors calculator
Eigenvectors for 2×2 with real eigenvalues.
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Matrix equation (Gaussian)
Augmented rows for 2×2 or 3×3.
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Matrix inverse calculator
A⁻¹ for square n≤6.
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Matrix multiplication calculator
A·B with compatible dimensions.
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Matrix rank calculator
Rank via row reduction.
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Mean, median, mode
All three from one data list.
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Mechanical energy
E = KE + PE (scalar sum for this tool).
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Mechanical work (two-stage sum)
W_total = F₁d₁ + F₂d₂ with θ = 0.
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Medical risk scores (note)
Use validated ASCVD/Framingham calculators.
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Metabolic rate (guide)
BMR vs TDEE pointers.
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mg ↔ mL (from mg/mL)
Volume from mass and concentration.
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Michaelis–Menten rate
v = Vmax·S/(Km+S).
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Micrometer ↔ nanometer
1 µm = 1000 nm.
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Microscopy magnification
Ocular × objective total magnification.
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Midpoint calculator
Midpoint of a segment in 2D.
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Mixture and alligation
Weighted mixture concentration.
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Molality calculator
Compute molality (mol/kg) from moles of solute and kilograms of solvent.
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Molarity calculator
Find molarity (mol/L) from moles of solute and solution volume in liters.
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Molarity ↔ molality
Relate M and m using solution density (kg/L) and solute molar mass.
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Molecular docking (note)
Pointer to docking software.
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Molecular formula calculator
Molecular formula from an empirical formula and experimental molar mass.
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Molecular geometry (VSEPR)
Same VSEPR engine with geometry-focused title.
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Molecular mass calculator
Molar mass (g/mol) from a molecular formula (parentheses and subscripts supported).
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Mole ratio calculator
Mole ratio from balanced coefficients and optional conversion from moles of A to moles of B.
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Moles from mass calculator
Convert grams to moles using molar mass (g/mol).
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Moles ↔ grams converter
Convert using molar mass (g/mol).
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Moment of inertia
Standard formulas: point, hoop, disk, sphere, rod.
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