About Redmoon Converters

Redmoon Converters is a growing collection of 94+ focused calculators and converters covering cooking, music production, fitness, 3D printing, brewing, development, design and more. Every tool does one job well: you put numbers in, you get a clear, correct answer out — no sign-up, no clutter, no spreadsheet required.

Why we built it

Most of these conversions have a real formula behind them — the density that links cups to grams, the geometry that turns filament length into spool weight, the math that locks a delay time to a tempo. We kept re-deriving the same numbers, so we built tools that get them right every time, and then wrote up the reasoning so you can understand the answer rather than just copy it. That's also why we publish a blog of worked guides alongside the tools.

What makes our tools different

• Fast. Tools load instantly and calculate as you type.
• Private. Calculations run entirely in your browser — the values you enter are never sent to our servers.
• Specific. Each tool is purpose-built for one task instead of being a do-everything calculator.
• Free. Every tool is free to use. Unobtrusive ads keep the lights on.
• Multilingual. The site is available in many languages.

Who we are

Redmoon Converters is built and maintained by Redmoon Software, an independent software studio. It's part of a small family of utility sites that includes Redmoon Calculators, Redmoon Randomizers and Redmoon Business Date Calculators. You can learn more about the studio at redmoonsoftware.com.

Get in touch

Spotted a bug, want a tool that doesn't exist yet, or have a correction to one of our formulas? We genuinely want to hear it. Email us or head to our contact page. You can also browse all tools to see what's available today.