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 (76)

• 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
• Animal Dose Calculator — mg/kg to Injection Volume & Batch Preparation
• 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 Recipe Calculator: TAE / TBE / PBS and Custom Formulas — Mass and Volume Conversions
• 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)
• 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)
• Correlation Coefficient Calculator Online: 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
• 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
• 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)
• 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)
• IC50 / EC50 Four-Parameter Logistic Fit Calculator (with Data Reliability Checks)
• Radioactive Isotope Decay Calculator (³²P / ³⁵S / ¹²⁵I / ³H Remaining Activity)
• Bench Calculators
• DNA Ligation Calculator — Vector and Insert Amount (T4 Ligase)
• log2FC ↔ Fold Change Converter
• Microscope Pixel Size and Nyquist Sampling Calculator (Resolution Depends on Pixels, Not Magnification)
• Multiplicity of Infection (MOI) Calculator
• Molarity, Mass, and Volume Calculator — Solve for Concentration, Volume, or Mass
• ESI-MS Adduct m/z Calculator
• 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)
• Percent Concentration Converter (% w/v, % w/w, % v/v, ppm ↔ mol/L)
• FASTQ Quality Score Calculator — Phred Q Score, Error Rate, Q20/Q30
• Primer Dimer and Hairpin Structure Detector (with 3′-End Complementarity Analysis)
• Protein Molecular Weight, Isoelectric Point & 280 nm Extinction Coefficient 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
• 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
• Word Count for Mixed Chinese–English Text (Abstract / Submission Limits)