About Trove

Trove is a growing collection of free online tools: calculators, file utilities, developer helpers and more. It is owned and operated by LemmeDeliver, which builds and maintains every tool on the site.

How we build tools

• Private by design. Every tool runs in your browser. The files you open and the numbers you enter are processed on your own device and are never uploaded to our servers.
• Free, with no sign-up. There are no accounts, no usage limits and no watermarks.
• Fast and accessible. Pages load quickly on ordinary phones and connections, and every tool can be used with a keyboard and screen reader.
• Honest results. Calculators explain the formula they use, and estimates are labelled as estimates.

How the site stays free

We may show advertising to cover the cost of running and improving the tools. Ads never change how a tool works or what it calculates. Read our Privacy Policy to see how advertising cookies are handled.

Get in touch

Found a bug or want a tool we don't have yet? Contact us. We read every message.