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 529–564 of 564.
- formula calculator
Titration calculator
Equivalence V_a C_a = V_b C_b — solve for any one of the four (mono–mono).
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Titration curve (strong–strong)
pH vs volume for strong acid titrated with strong base (or swap).
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Topology visualizer (roadmap)
Placeholder for advanced viz.
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Torque
τ = r F sin θ.
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Trait probability
Phenotype split from p under complete dominance.
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Transpiration (E ∝ g×VPD)
Proportional estimate.
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Triangle solver (SSS)
Area and angles from three sides.
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Triangle trigonometry (SAS)
Area and third side from two sides and included angle.
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Trig equation (simple)
Principal solution for sin θ = k or cos θ = k.
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Trig identities (reference)
Common identities summary.
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Trigonometry calculator
sin, cos, tan in degrees or radians.
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Trophic energy transfer
E_n = E₀ × η^n with custom η.
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Truth table generator
Two-input logic gates.
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Two's complement calculator
Fixed-width two's complement ↔ signed integer.
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Uncertainty calculator
Combine independent uncertainties for sum or product.
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Unit circle visualizer
Angle from +x axis with cos/sin readout.
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Vaccine dose per vial
Total mass or volume divided by containers.
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Van’t Hoff factor calculator
Solve i from measured colligative ΔT and K, m (or related combinations).
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Variance calculator
Sample or population variance.
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Vector field preview
Simple 2D field arrows.
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Venn diagram helper (counts)
Region sizes from |A|, |B|, |A∩B|.
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Viscosity (Poiseuille flow)
Q = π r⁴ ΔP / (8 η L) for laminar pipe flow.
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VO₂ max (Cooper)
From 12-minute run distance.
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Volume calculator
Box, cylinder, sphere, cone, pyramid.
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Volume converter
m³, L, gal, ft³, …
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Volume flow rate
Q = A v.
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VSEPR shape predictor
Molecular shape from bonding domains and lone pairs on central atom.
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Water potential comparison
Compare Ψ_in vs Ψ_out for net water direction (toy).
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Wave simulation (snapshot)
Sine snapshot y ∝ sin(kx + φ) with adjustable λ and φ.
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Wave speed
v = f λ.
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Weak acid / weak base calculator
pH from K_a and C (acid) or pOH/pH from K_b and C (base).
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Weighted average
Lines of value and weight.
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Work (constant force)
W = F d cos θ.
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Young’s modulus
E = σ/ε.
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Z-score calculator
z = (x − μ)/σ.
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Z-transform (reference)
Discrete transform snippets.
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