Email Us
The fastest way to reach us is by email:
What To Include
To help us answer quickly, please let us know:
- The page your message is about (a link is perfect).
- What you expected and what you saw, for example, a number that looks wrong.
- Your device and browser if a calculator isn’t working.
We Welcome
- Corrections. If you spot an error in a number, a source or an explanation, tell us and we’ll check it promptly.
- Tool ideas. Missing a converter or calculator you’d find useful? Suggest it.
- Feedback. What’s helpful, what’s confusing, what you’d like to see next.
- Partnerships and media. Educators, dietitians, publishers and app developers are welcome to get in touch.
Before You Write
Many common questions are answered on our pages:
- How to convert kJ to calories
- How many kJ do I need a day?
- How to read kJ on food labels
- kJ vs calories vs kcal
Please note we can’t give personal medical or dietary advice. For that, a GP or accredited dietitian is the right person to ask.
Corrections Policy
Accuracy matters to us. When someone reports a possible error, we check the number against its original source, fix it if it’s wrong, and update the page’s “last updated” date. If a calculator formula changes, we re-test every page that uses it before publishing.
Response Times
We read every message. Most emails get a reply within two business days; detailed data questions can take a little longer while we check sources. We don’t sell or share your email address, and we only use it to reply to you, see our privacy policy.
Suggest A Conversion Or Calculator
Is there a number you look up often that we don’t cover yet, a specific kJ value, a food, a drink or a type of exercise? Tell us what you were trying to work out and where the number came from (a label, an app, a menu). The most-requested ideas become new pages and tools, and we’ll let you know when yours goes live.