Contact Us

Have a question, found a bug, or have an idea to make our calculators better? We would love to hear from you. Fill out the form below and we will get back to you as soon as we can — usually within two working days.

What We Can Help With

• Corrections. If a formula, constant, or reference figure looks wrong, tell us which page and what you expected. These go to the top of the queue. Our about page lists the formulas and sources behind each calculator if you want to check our working first.
• Bugs. A calculator that will not accept an input, returns an odd result, or breaks on your device. Let us know the browser and the numbers you entered so we can reproduce it.
• New calculator requests. If the fuel maths you need is not covered by our 24 existing tools, describe the calculation and we will look at adding it.
• Translation fixes. The site is published in 19 languages. If a translated label or guide reads awkwardly in your language, we want the correction.
• Press and licensing. Questions about quoting or citing our figures — see the terms of service for the short version.

Before You Write

A few things we are asked often: every calculator here is free with no sign-up, results are estimates rather than guarantees, and we do not store the numbers you type — the maths runs in your browser, as described in our privacy policy. We cannot diagnose a specific vehicle fault or give tax advice, though our fuel efficiency guides cover most of the common questions about improving real-world MPG.

You can also email us directly at hello@milespergalloncalculator.com.