Zoology Research Calculators: Ecology, Stats & Wet Lab Tools

🧬 Research Scholar’s Toolkit

Professional grade calculators for Ph.D. fieldwork, wet lab protocols, and thesis statistics.

🦠 Biodiversity 📈 Statistics 🧪 Wet Lab

🦠 Biodiversity & Plankton Suite

Shannon-Wiener, Simpson’s, Evenness & Sedgwick-Rafter density — one entry, or a whole site×species sheet at once.

Diversity Indices

Shannon-Wiener (H′), Simpson’s (D) & Pielou’s Evenness (E) from one species-count list.

Species Counts (comma separated)

H′ = −Σ(Pᵢ×lnPᵢ) · D = Σnᵢ(nᵢ−1)/N(N−1) · E = H′/lnS

Sedgwick-Rafter Density

Convert a raw microscope count into organisms/L.

Organisms Counted (N)

Volume of Concentrate, mL (Vs)

Volume Counted in Chamber, mL (Vc)

Volume of Water Filtered, L (Vf)

Density (org/L) = (N × Vs) / (Vc × Vf)

Mark-Recapture

Lincoln-Petersen Index for estimating population abundance.

Catch 1 (n1)

Catch 2 (n2)

Recaptured Marks (m2)

N = (n1 × n2) / m2

Bulk Upload / Paste — Site × Species Table

First column = species names, first row = site/sample names, cells = counts. Upload a .csv/.xlsx or paste straight from Excel. All processing happens in your browser — no data is uploaded anywhere.

📁 Drag & drop a .csv / .xlsx file here, or click to browse

or paste table below

🔒 Your data stays in this browser tab — nothing is sent to a server.

📈 Thesis Statistics Suite

Mean ± SEM, Chi-Square, Pearson’s Correlation & One-Way ANOVA — one test at a time, or a whole dataset table at once.

Mean ± SEM

Generate Mean and Standard Error for thesis tables.

Data Set (comma separated)

SEM = σ / √n

Chi-Square (X²)

Goodness of Fit test (Observed vs Expected).

Observed (comma separated)

Expected (comma separated)

X² = Σ (O-E)² / E

Pearson’s Correlation

Correlation coefficient (r) between two variables.

Variable X (comma separated)

Variable Y (comma separated)

r = Σ(x-x̄)(y-ȳ) / √[Σ(x-x̄)² Σ(y-ȳ)²]

One-Way ANOVA

Compare means across 2+ groups (e.g. sites or years).

Groups (semicolon-separated; commas within)

F = MS_between / MS_within

Bulk Upload / Paste — Grouped Data Table

First row = group/variable names, cells below = numeric values (ragged columns OK). Upload a .csv/.xlsx or paste straight from Excel. All processing happens in your browser — no data is uploaded anywhere.

📁 Drag & drop a .csv / .xlsx file here, or click to browse

or paste table below

🔒 Your data stays in this browser tab — nothing is sent to a server.

🧪 Wet Lab Prep & Measurement Suite

Molarity, Dilution (C1V1), Beer-Lambert & PCR Mastermix — the four calculations every prep session needs.

Molarity Calculator

Calculate solute mass for preparing lab solutions.

MW (g/mol) Vol (mL) Desired Molarity (M)

Mass = M × L × MW

Dilution (C1V1)

Calculate volume of stock needed for working solution.

Stock (C1) Final (C2) Final Volume (V2 mL)

V1 = (C2 × V2) / C1

Beer-Lambert Law

Convert Absorbance (OD) to Concentration.

Abs (A) Coeff (ε) Path Length (cm)

c = A / (ε × l)

PCR Mastermix Chef

Calculate mix volumes for multiple reactions.

Sample Count Error % 1X Recipe (uL)

Vol = (1x) × N × (1 + Err%)