Health
Least-squares logistic fit of K, r, t₀ from `time, population` observations, with fitted curve, residuals, and plateau warnings.
carrying-capacity-estimatorHealth
Compute the antibiotic stock volume for a target working concentration with C₁V₁ = C₂V₂, supporting mg/mL, µg/mL, g/L, ng/mL and × fold notation.
antibiotic-concentrationHealth
Convert OD600 to CFU/mL via a calibration slope with organism presets, blank correction, dilution handling, and linearity warnings.
bacterial-growth-odHealth
Estimate adherent-cell confluency with the grid-count method: confluency% = occupied/total squares × 100 per field, with multi-field mean ± SD and optional time-to-target from the doubling time.
confluency-estimatorMedia
Create a DJ-style, pitch-preserving speed ramp between two BPM values.
audio-bpm-transition-builderMedia
Estimate the lowest and highest stable sung notes from an audio recording.
audio-vocal-range-finderEducation
Turns Neubauer grid counts into cells/mL with dilution factor, total-count option, and 20–100 cells/square density advice. Educational use only.
cell-counting-hemocytometerEducation
Doubling time, doublings, and specific growth rate from two exponential-phase cell counts, in h/min/day. Educational use only.
cell-doubling-timeEducation
Viability % and live/dead/total cells per mL from trypan blue exclusion counts, with culture-health interpretation. Educational use only.
cell-viability-trypan-blueEducation
Colony count → CFU/mL with dilution factor and plate volume, plus 30–300 range TNTC/TFTC interpretation. Educational use only.
cfu-calculatorEducation
Per-residue counts and mol%, group tallies, Kyte–Doolittle GRAVY score, and ProtParam MW from a sequence. Educational use only.
amino-acid-compositionEducation
Least-squares A562 curve fit, back-calculated unknowns with dilution factor, extrapolation flags, and detergent/reducing-agent compatibility notes. Educational use only.
bca-assay-calculator