Biology Calculators

Browse 10 free biology tools. All tools are free, instant, and require no signup.

Biological calculations for genetics, cell biology, ecology, and life sciences. Calculate allele frequencies, population growth, and biological metrics.

All Biology Tools

• Bacterial Growth Rate - Determine specific growth rate (μ), doubling time, and generation count for bacterial cultures using OD or cell counts.
• Blood Type Calculator - Predict possible blood types of children based on parents' blood types using Punnett square genetics. Show ABO and Rh factor probabilities.
• Cell Doubling Time Calculator - Calculate the generation time and growth rate of your cell culture based on population changes over time.
• Codon Usage Calculator - Analyze DNA/RNA sequences to determine codon frequency, amino acid distribution, and sequence metrics.
• DNA Concentration Calculator - Calculate dsDNA concentration from A260 absorbance and check sample purity with A260/A280 ratios.
• GC Content Calculator - Calculate GC and AT content percentages of a DNA/RNA sequence instantly.
• Genome Size Calculator - Convert between DNA C-value (pg) and genome size (Mb/Gb), or calculate sequencing coverage depth.
• PCR Efficiency Calculator - Calculate quantitative PCR (qPCR) efficiency and amplification factor from standard curve slopes.
• Protein Molecular Weight - Calculate the molecular weight and amino acid composition of a protein sequence instantly.
• RNA Concentration Calculator - Calculate RNA concentration from A260 absorbance and verify sample quality with A260/A280 and A260/A230 ratios.