Browse by category
Growth kinetics, plate counts and cell quantitation math used at the bench in tissue culture rooms and microbiology labs…
Nucleic acid quantitation, primer design and reaction setup math for the molecular biology bench. Covers spectrophotometry, PCR…
Mendelian probability, population genetics and linkage math assigned in genetics courses and used in genetic counseling. Turns…
Bedside and bench corrections that turn raw chemistry panel numbers into interpretable values. Used by medical technologists…
Dosage and infusion arithmetic performed by nurses, pharmacists and prescribers at the point of care. Covers weight- and…
Hemodynamic, respiratory and acute-care formulas applied at the bedside and in physiology courses. Converts vital signs, blood…
2x2 table statistics and measures of association used in evidence-based medicine, biostatistics courses and assay validation…
Most used in biology, genetics & clinical lab
- Cell Doubling Time CalculatorExponential (Malthusian) growth modelEnter the cell density you seeded, the density you counted at harvest, and the hours in between. This calculator returns the…
- CFU per mL Plate Count CalculatorFDA BAM Chapter 3 / ISO 7218 plate countCount your colonies, tell this calculator how much you plated and how far you diluted, and it returns the viable count of the…
- DNA / RNA Concentration from A260 CalculatorBeer–Lambert law with standard A260 conversion factors (Sambrook, Molecular Cloning)This calculator turns a 260 nm absorbance reading into the three numbers you actually need at the bench: concentration in…
- Primer Melting Temperature (Tm) CalculatorSantaLucia unified nearest-neighbour thermodynamics (1998)Paste a primer sequence and this calculator returns its melting temperature four ways: the nearest-neighbour thermodynamic…
- PCR Master Mix CalculatorC₁V₁ = C₂V₂ dilution arithmeticGive this calculator your reaction volume, how many reactions you are setting up, and the stock and final concentration of each…
- Delta Delta Ct Fold Change CalculatorLivak & Schmittgen 2^-ΔΔCt method; MIQE guidelinesEnter four Ct values — your target gene and your reference gene, each in the treated and the control sample — and this…
- Punnett Square Probability CalculatorMendel's laws of segregation and independent assortmentType each parent's genotype the way you would write it on paper — Aa , AaBb , AaBbCc — and this calculator builds the whole…
- Hardy-Weinberg Equilibrium CalculatorHardy-Weinberg principle (Hardy 1908; Weinberg 1908)Enter how common a recessive phenotype is — as a frequency, as a "1 in N" incidence, or as the allele frequency itself — and…
- Anion Gap CalculatorSerum anion gap with Figge albumin correctionEnter a basic metabolic panel and this calculator returns the serum anion gap, the albumin-corrected gap, the delta gap, the…
- Corrected Calcium for Albumin CalculatorPayne albumin-adjusted calciumRoughly 40% of the calcium in serum is bound to albumin and is biologically inert. A total calcium result therefore falls when…
- Serum Osmolality & Osmolal Gap CalculatorSmithline–Gardner calculated osmolalityEnter sodium, glucose and BUN and this calculator returns the calculated serum osmolality, then subtracts it from your…
- eGFR Calculator (CKD-EPI 2021)CKD-EPI 2021 / KDIGO 2024This calculator uses the CKD-EPI 2021 creatinine equation — the race-free equation recommended by the National Kidney…