NEB Tm Calculator

Use the NEB Tm Calculator to estimate an appropriate annealing temperature when using NEB PCR products.

Instructions

  • Select the product group of the polymerase or kit you plan to use.
  • Select the polymerase or kit from the list of products.
  • If needed, modify the recommended primer concentration.
  • Enter primer sequences (with up to 3 ambiguous bases). Spaces allowed.

Note that an annealing temperature will only be displayed if both primer sequences are entered.

Anneal at

--- °C

Primer 1

--- nt

---% GC

Tm: ---°C

Primer 2

--- nt

---% GC

Tm: ---°C