All pages

Every English page on this site, in one list. Rebuilt automatically on each update. The Chinese site has its own index here.

Tools (106)

• Bench Tools
• Agarose Gel Concentration Selector and Mass Calculator (with TBE/TAE Guidance)
• Amino Acid Properties Reference: Molecular Weight, Side-Chain pKa, Hydrophobicity, and Codon Count
• Ammonium Sulfate Precipitation Calculator: Solid Amount for Protein Fractionation
• Animal Dosing Calculator — mg/kg to Injection Volume & Batch Prep
• One-Way ANOVA Calculator Online (Post-Hoc Tests & Multiple Comparison Correction)
• Beer-Lambert Law Calculator: Absorbance, Extinction Coefficient, and Concentration
• Buffer Preparation Calculator (Henderson-Hasselbalch)
• Buffer pH Temperature Correction Calculator (Tris / HEPES / MOPS)
• Buffer Recipe Calculator: TAE / TBE / PBS and Custom Formulas — Mass and Volume Conversions
• Circular Dichroism Mean Residue Ellipticity Calculator (CD [θ]MRE and Δε)
• Hemocytometer Cell Concentration Calculator
• Cell Split Ratio & Regrowth Time Calculator — Back-Calculate the Right 1:N Ratio from Doubling Time
• Plate Colony Count and CFU/mL Calculator (Countable Range / ISO Weighted Average / Poisson Error)
• Chi-Square and Fisher's Exact Test Calculator (with OR / RR)
• ChIP-qPCR Percent Input Calculator (% Input Enrichment Analysis)
• How to Choose a Statistical Test: By Data Type, Number of Groups, and Paired vs. Independent Design
• Codon Table Quick Reference (Standard Genetic Code): Bidirectional Codon–Amino Acid Lookup
• Codon Usage Table & Rare Codon Scanner (with CAI Calculation)
• Complete Medium Calculator — Serum and Supplements Back-Calculated from Final Volume
• Correlation Coefficient Calculator: Pearson, Spearman and Kendall
• Cell Culture Vessel Converter — Surface Area, Seeding Density & Drug Volume
• qPCR 2^−ΔΔCt Relative Quantification Online Calculator
• Diagnostic Test 2×2 Table Calculator: Sensitivity, Specificity, and Predictive Values
• Dialysis Buffer Exchange Calculator — Desalting, Imidazole Removal, Buffer Swap
• Solution Dilution Calculator (C1V1 = C2V2)
• Community Diversity Index Calculator (Shannon / Simpson / Chao1)
• DNA / RNA Copy Number Calculator (Plasmid Standards, qPCR, ddPCR)
• Bacterial / Cell Doubling Time and Growth Rate Calculator
• Drug Dilution Calculator for Cell Assays — DMSO Stock, Working Solution & Well DMSO%
• Dual-Luciferase Reporter Normalization Calculator (Firefly / Renilla Relative Luciferase Activity)
• Degree of Labeling (DOL) Calculator: Fluorescent Labeling Stoichiometry for Antibodies and Proteins
• Enrichment Significance Test Calculator — Hypergeometric Distribution / Fisher's Exact Test
• Michaelis-Menten Km and Vmax Calculator (Nonlinear Fit + Three Linearization Methods)
• FASTA File Statistics: Sequence Count, Length Distribution, and N50
• Multiple Testing Correction Calculator: BH (FDR), BY, and Bonferroni
• Figure Size and Resolution Calculator for Journal Submission (mm / inch / px / DPI)
• FRET Efficiency and Donor–Acceptor Distance Calculator (Förster Equation)
• Gel Band Size Estimation (DNA bp / Protein kDa, Semi-log Standard Curve)
• Gene List Intersection, Union & Difference — Online Venn Set Calculator
• Non-Standard Genetic Code Tables: Mitochondrial, Bacterial, and Ciliate Codon Differences (NCBI transl_table Reference)
• Genome Coordinate System Converter — BED (0-based) ↔ GFF/VCF/SAM (1-based)
• Gibson Assembly Fragment Amount Calculator (Multi-Fragment Molar Ratio and pmol Conversion)
• Hardy-Weinberg Equilibrium Calculator: Allele Frequency, Genotype Frequency, and HWE Departure Test
• HPLC Column Efficiency Calculator: Theoretical Plate Count N, Resolution Rs, and Capacity Factor k′
• IC50 / EC50 Four-Parameter Logistic Fit Calculator (with Data Reliability Checks)
• CO₂–pH Calculator for Cell Culture Media
• Buffer Ionic Strength Calculator (IEX · SEC · EMSA Condition Check)
• Radioactive Isotope Decay Calculator (³²P / ³⁵S / ¹²⁵I / ³H Remaining Activity)
• Kaplan-Meier Survival Curve and Log-Rank Test Calculator
• Ki Calculator (Cheng-Prusoff Equation) — IC50 to Ki Conversion
• Bench Calculators
• DNA Ligation Calculator — Vector and Insert Amount (T4 Ligase)
• Limiting Reagent and Theoretical Yield Calculator (Synthesis / Biochemical Reactions)
• Liquid-Liquid Extraction Efficiency Calculator (Multiple Extractions and Partition Coefficient)
• log2FC ↔ Fold Change Converter
• Mass Accuracy Calculator: ppm Error and Mass Window for High-Resolution MS
• Microscope Pixel Size and Nyquist Sampling Calculator (Resolution Depends on Pixels, Not Magnification)
• Multiplicity of Infection (MOI) Calculator
• Molecular Weight Calculator: Molar Mass and Weighing Mass from Chemical Formula
• Molarity, Mass, and Volume Calculator — Solve for Concentration, Volume, or Mass
• ESI-MS Adduct m/z Calculator ([M+H]+, [M+Na]+, Neutral Mass)
• NGS Library Molarity & Equimolar Pooling Calculator (Qubit ng/µL to nM)
• Mann-Whitney U and Wilcoxon Signed-Rank Test Calculator
• Nucleic Acid Concentration Calculator: OD260, ng/µL, and pmol Conversion
• OD₆₀₀ to Cell Concentration Calculator (Dilution Correction / Plate Reader Path-Length / Inoculum Back-Calculation)
• Primer Resuspension and Dilution Calculator
• Osmolarity Calculator — mOsm Conversion & Isotonicity Check
• Pairwise Sequence Alignment Online Tool (Needleman-Wunsch Global Alignment)
• PCR Reaction Setup Calculator (with Multi-Sample Master Mix)
• PCR Run Time Calculator — Amplicon Size × Extension Rate
• Peptide Fragment Ion m/z Calculator (b/y Ions, MS/MS Spectrum Annotation)
• Percent Concentration Converter (% w/v, % w/w, % v/v, ppm ↔ mol/L)
• FASTQ Quality Score Calculator — Phred Q Score, Error Rate, Q20/Q30
• Pharmacokinetic Non-Compartmental Analysis (NCA): AUC, Half-life, and Clearance Online Calculator
• Primer Dimer and Hairpin Structure Detector (with 3′-End Complementarity Analysis)
• Protein Net Charge Calculator (pH-Dependent)
• Protein Molecular Weight, Isoelectric Point & 280 nm Extinction Coefficient Calculator
• Protein Purification Table: Specific Activity, Yield, and Purification Fold Calculator
• qPCR Amplification Efficiency Calculator — Standard Curve Slope to E, Pfaffl Relative Quantification
• Centrifuge RCF (g) ↔ RPM Converter — Relative Centrifugal Force Calculator
• Research Utilities
• Restriction Digest Setup Calculator (Units, Glycerol Limit, and Volume Breakdown)
• Restriction Enzyme Recognition Sequences Reference & Cut-Site Finder
• DNA / RNA Reverse Complement Online Converter
• RNA-seq Expression Normalization Calculator: RPKM / FPKM / TPM Converter
• ROC Curve & AUC Calculator with Hanley-McNeil Confidence Intervals
• Centrifuge k-Factor Calculator: Convert Run Time When Switching Rotors
• Sample Size Estimation for Two-Group Comparison (t-test / Proportion Test)
• SDS-PAGE Gel Preparation Calculator (Resolving Gel & Stacking Gel)
• Online DNA GC Content and Tm Calculator
• Sequence Analysis Tools
• Sequencing Depth & Data Volume Calculator (Lander-Waterman)
• Standard Curve Linear Regression and Back-Calculation of Unknown Samples (BCA / Bradford / ELISA)
• Statistics Calculators
• Online t-Test Calculator: Independent Samples / Paired Samples / One-Sample (with Welch Correction)
• TCID₅₀ Calculator — Virus Infectious Titer via Reed-Muench Method
• Nearest-Neighbor Primer Tm Calculator
• Transfection Volume Calculator — Lipofectamine 3000 / PEI Scaled by Growth Area
• Transformation Efficiency Calculator
• DNA to Protein Translation — Six-Frame Online Tool
• Subcutaneous Tumor Volume Calculator (Caliper Measurement / TGI Tumor Growth Inhibition)
• Word Count for Mixed Chinese–English Text (Abstract / Submission Limits)
• Scratch Wound Healing Assay Calculator: Wound Closure Percentage and Migration Rate
• Z' Factor Calculator: HTS Assay Quality Assessment for High-Throughput Screening
• Z-Stack Step Size Calculator (Axial Resolution & Nyquist Sampling)