Science & Education
A = ε·c·l both ways, with T = 10⁻ᴬ, %T, unit selectors, and the 0.05–1.0 working-range check.
beer-lambert-law-calculatorScience & Education
Hydrogen level n: r_n = n²a₀, E_n = −13.605693/n² eV, v_n = αc/n, orbital period, plus optional transition energies with named series lines.
bohr-model-calculatorMedia
Apply EDM-style tempo-synced pumping ducking to any audio without a kick-drum sidechain file — volume-envelope automation in the style of LFO Tool / Kickstart.
audio-sidechain-pump-generatorMath & Numbers
Minimal SOP via Quine–McCluskey with essential prime implicants, exact minimum cover, Gray-coded Karnaugh map, and full-assignment verification.
boolean-algebra-simplifierHealth
Compare Mifflin-St Jeor, original and revised Harris-Benedict, Schofield (FAO/WHO/UNU), and Katch-McArdle BMR equations side by side with mean and spread in kcal/day. Not medical advice.
basal-metabolic-rate-extMedia
Generate exact A=440, A=432, or custom equal-tempered reference notes and practice scales.
audio-tuning-reference-generatorHealth
Trophic pyramid from producer energy and transfer efficiency: per-level energy, % of base, losses, and why energy pyramids stay upright.
biomass-pyramidHealth
Convert OD600 to CFU/mL via a calibration slope with organism presets, blank correction, dilution handling, and linearity warnings.
bacterial-growth-odMedia
Estimate the lowest and highest stable sung notes from an audio recording.
audio-vocal-range-finderEducation
Least-squares A562 curve fit, back-calculated unknowns with dilution factor, extrapolation flags, and detergent/reducing-agent compatibility notes. Educational use only.
bca-assay-calculatorEducation
Least-squares BSA curve, back-calculated unknowns with dilution factor, extrapolation flags, and protein-specific dye-response caveats. Educational use only.
bradford-assay-calculatorMedia
Apply long-short swing timing to transient-driven loops, with optional seeded humanization.
audio-swing-feel-generator