DNA Calculator

Analyze DNA sequences with calculations for reverse complement, GC content, length, and melting temperature

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About This Tool

The DNA Calculator is a comprehensive online tool for analyzing DNA sequences. It performs multiple calculations including generating the reverse complement, calculating GC content percentage, determining sequence length, and estimating melting temperature. This tool is designed for students, researchers, and bioinformatics professionals who need quick DNA sequence analysis without complex software installation.

Save your calculation history with a free account

How to Use

Enter a DNA sequence in the input field (only A, T, C, G characters allowed)
Select the calculation type from the dropdown menu
Click the 'Calculate' button to analyze your DNA sequence
View the detailed results in the output section
Use the 'Clear' button to reset the form for new calculations

Frequently Asked Questions

Find Quick Answers

What characters are allowed in the DNA sequence input?

Only the standard DNA nucleotides: A (adenine), T (thymine), C (cytosine), and G (guanine). The tool automatically converts lowercase letters to uppercase and removes whitespace.

How is the melting temperature calculated?

The melting temperature is estimated using the Wallace rule: Tm = 2°C × (A+T) + 4°C × (C+G). This provides a basic approximation suitable for sequences under 100 nucleotides.

Can I analyze RNA sequences with this tool?

No, this tool is specifically designed for DNA sequences. RNA sequences contain U (uracil) instead of T (thymine), which would give incorrect results in this calculator.

What is the maximum sequence length supported?

The tool can handle sequences up to 10,000 nucleotides. For longer sequences, consider using specialized bioinformatics software.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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