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- Tsunami Speed & Arrival Time Calculator (Shallow Water c=√(gh)) | CalcBE Calculate approximate tsunami wave speed and arrival time from average water depth and distance using the shallow-water wave approximation (c=√(gh)...
- Beta diversity calculator (Jaccard / Bray–Curtis) | Distance matrix & PCoA | CalcBE Compute beta diversity between samples using Jaccard (presence/absence) or Bray–Curtis (abundance). Paste an OTU/ASV table or import CSV to view th...
- Protein standard curve calculator (BCA / Bradford) | CalcBE Build a protein assay standard curve (BCA/Bradford) and estimate unknown concentrations. Supports linear/quadratic regression (auto compare AICc),...
- Kd calculator | Binding curve fit (one site / Hill) | CalcBE Fit binding data and estimate Kd (dissociation constant) using one-site or Hill models. Includes auto model comparison (AICc), replicates (mean±SD)...
- MOI calculator (multiplicity of infection) | cells, titer, volume | CalcBE Calculate MOI from cell count, titer (TU/PFU/IFU), and inoculum volume. Also solve volume or required titer from a target MOI, show a Poisson infec...
- IC50/EC50 calculator (4PL/5PL curve fit) | Dose–response | CalcBE Paste concentration–response data and estimate IC50/EC50 (the 50% point) with 4PL/5PL curve fitting. Supports inhibition/activation, point exclusio...
- Centrifuge converter (rpm ↔ RCF ×g) | by rotor radius | CalcBE Convert between centrifuge speed (rpm) and relative centrifugal force (RCF, ×g) using rotor radius (mm/cm/in). Includes a quick reference table, co...
- DNA assembly mix calculator (Gibson/Golden Gate) | Auto mix volumes | CalcBE Calculate DNA assembly mix for Gibson or Golden Gate. From backbone/insert molar ratios, get required mass (ng) and volume (µL), plus remaining wat...
- NGS library concentration (ng/µL → nM) | dilution & pooling | CalcBE Convert NGS library concentration from ng/µL and fragment length to nM, then calculate normalization dilutions and pooling (equal volume or equal m...
- PCR master mix calculator | reactions, concentrations, overage | CalcBE Calculate PCR/qPCR master mix volumes from reaction volume/count and stock/final concentrations. Supports overage (% or +1), 96/384 wells, protocol...
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- Concrete, Gravel & Mulch Calculator | Material Estimates | CalcBE
Estimate concrete volume and bag counts, gravel coverage and tons, and mulch bags with US or metric inputs plus a waste allowance. Results are informational only.
- Function Transformations Explorer (Translate, Scale, Reflect) | CalcBE
Adjust a, b, h and v in y = a·f(b(x−h)) + v to explore shifts, stretches and reflections. Compare graphs side by side. Shareable URL. No sign-in.
- Long Division Calculator (Steps, Quotient, Remainder) | CalcBE
See quotient, remainder, and step-by-step long division with layout. Supports decimals and repeating decimals. Teacher mode, shareable URL, LaTeX. No sign-in.