RNA Copy Number Calculator
Estimate RNA molecule copy number from mass and nucleotide length.
RNA Copy Number measurements
Enter your values, then calculate.
Result
How to calculate rna copy number
This calculator estimates RNA copy number from mass and sequence length — a common calculation in molecular biology for RT-PCR and RNA quantification work.
How the calculation works
Copy number = (RNA mass in ng × 6.022×10¹⁴) ÷ (RNA length in nucleotides × 340), where 340 g/mol is the average molecular weight per RNA nucleotide.
Example
5 ng of RNA at a 1,500-nucleotide length: (5×6.022e14)÷(1,500×340) = 3.011e15÷510,000 ≈ 5.9×10⁹ copies.
Frequently asked questions
How is Result calculated?
Result = ([RNA mass] × 602200000000000) ÷ ([RNA length] × 340).
Is the RNA Copy Number Calculator free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
RNA Copy Number Calculator
Copy number = (RNA mass in ng × 6.022×10¹⁴) ÷ (RNA length in nucleotides × 340), where 340 g/mol is the average molecular weight per RNA nucleotide.
Let's understand your rna copy number result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for RNA Copy Number
- RNA length should reflect your specific transcript's actual length — confirm this from your sequence data.
- This calculation uses 340 g/mol per nucleotide (versus 660 for double-stranded DNA), reflecting that RNA is typically single-stranded.
Common RNA Copy Number Mistakes to Avoid
- Using the DNA average molecular weight per base (660) instead of the RNA-specific value (340), which would produce a significantly incorrect copy number.
When to Use This Calculator
This calculator estimates RNA copy number from mass and sequence length — a common calculation in molecular biology for RT-PCR and RNA quantification work.