Email Open Rate
Use Email Open Rate to calculate email campaign open rate — free, immediate, and with nothing to install. Every figure is worked out on your own device using standard formulas — nothing you type is transmitted, which matters when the numbers are your salary, loan or health data. It is used most by people comparing loan or mortgage options before talking to a lender. Figures are indicative — they are not financial, medical or legal advice. Nothing is gated: no signup wall, no trial period, no upgrade prompt.
Key features
- Figures are indicative — they are not financial, medical or legal advice.
- Both metric and imperial units are supported where relevant.
- Works on desktop, tablet and phone — no separate app to install.
- No ads interrupting the tool itself, and no upsell before the result.
How to use Email Open Rate
- Enter your figures: Fill in the fields above. Leave anything optional blank and a sensible default is used.
- Pick your units: Switch between metric and imperial if the calculation involves units.
- Read the result: The answer updates immediately, with the breakdown shown so you can check the working.
Frequently asked questions
- Can I rely on this for a formal decision? — Treat Email Open Rate as a quick indication. For anything binding — a mortgage, a tax return, a medical decision — confirm with a qualified professional.
- Are my numbers sent anywhere? — No. The calculation runs in your browser. Salary, loan and health figures never leave the device.
- How accurate is Email Open Rate? — Email Open Rate uses the standard published formula for this calculation with full double-precision arithmetic, so the arithmetic itself is exact. Accuracy of the answer depends on the figures you enter.
- Is there a limit on how often I can use it? — No. It is free and unlimited, with no account required.