Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Gene Expression Fold Change Calculator

Determine how much a gene is up- or down-regulated by dividing treatment expression by control expression. Used by researchers analyzing qPCR, RNA-seq, or microarray data to quantify gene activity changes.

Treatment Expression Level (units)

Control Expression Level (units)

Fill in the required fields to see your result.

Biology

Primer Melting Temperature Calculator

Estimate the melting temperature (Tm) of a PCR primer from its GC content and length using the simplified Wallace-rule approximation. Useful for quickly designing and checking primers before running PCR.

GC Content (%)

Primer Length (bp)

Fill in the required fields to see your result.

Key differences

	Gene Expression Fold Change Calculator	Primer Melting Temperature Calculator
Category	Biology	Biology
Inputs required	2	2
Result	Fold Change (fold)	Melting Temperature (°C)
What it does	Determine how much a gene is up- or down-regulated by dividing treatment expression by control expression. Used by researchers analyzing qPCR, RNA-seq, or microarray data to quantify gene activity changes.	Estimate the melting temperature (Tm) of a PCR primer from its GC content and length using the simplified Wallace-rule approximation. Useful for quickly designing and checking primers before running PCR.