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Dilution Calculator Calculate stock and diluent volumes using C₁V₁ = C₂V₂.Serial Dilution Calculator Plan a stepwise dilution series and reagent volumes.Molarity Calculator Find the mass needed to prepare a solution.PCR Master Mix Plan reaction volumes and account for pipetting excess.qPCR ΔΔCt Calculator Compute relative expression from target and reference Ct values.Descriptive Statistics Mean, median, sample SD, SEM and range in one step.Percentage Change Calculator Find absolute and percentage changes from a baseline.t-Test Calculator Compare two groups: Welch independent or paired t-test.Pearson Correlation Calculator Calculate Pearson r, two-sided p-value and linear trend.Proportion Sample Size Estimate survey sample size for a single proportion.Scientific Unit Converter Convert everyday scientific units instantly.DOI Link Builder Clean and format DOI identifiers.Figure Resolution Checker Check image dimensions and effective print DPI.Scatter Plot Maker Paste two columns, preview a figure and export SVG.Diagnostic Accuracy Calculator Sensitivity, specificity, PPV, NPV, LR± and 95% confidence intervals.ROC Curve & AUC Calculator Calculate empirical ROC, AUC and DeLong-style 95% CI.
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