Email Open Rate Calculator

Email marketing metrics: open rate shows recipients who opened the campaign. CTR (click-through rate) measures clickers among openers

The calculator uses the standard published formula for email open rate. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Open rate = Opens / Sends × 100. Each step in the calculation is shown so you can verify the result manually.