BTU Calc

About BTU Calc

BTU Calc was built for the moment you just need to handle this task and move on — no signup, no upload to a third-party server. Processing runs locally in your browser using modern Web APIs. Nothing is uploaded, nothing is logged, and there is no quota to worry about for casual use. If you find yourself doing this regularly, the rest of the utility suite covers most adjacent tasks with the same approach.

When you'd reach for BTU Calc

• You're on a public or shared machine and don't want to leave traces of what you're working on.

  Travelers, contractors, anyone working from a friend's computer.

  Nothing is uploaded, nothing persists if you're not signed in.

• You're cleaning up a folder of files that accumulated over a project and need to standardize them.

  Designers, writers, and developers wrapping up deliverables.

  Drop each file in, copy the output, move on.

• You're hitting the daily limit of a paid SaaS and need a backup option for a single quick job.

  Marketers and ops people whose primary tool is metered.

  Stay productive without burning credits.

• You need to handle a one-off task right before a meeting and don't have time to install anything.

  Anyone working remotely on a borrowed or restricted machine.

  Open the page, get the result, paste it into your doc — under a minute.

Frequently asked about BTU Calc

Do I need to create an account to use BTU Calc?

No. BTU Calc works without any signup. We only ask for an email if you decide to subscribe to a paid plan.

What browsers does BTU Calc support?

Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.

Can I use BTU Calc commercially?

Yes. The output of BTU Calc belongs entirely to you, with no licensing restrictions.

Does BTU Calc work on mobile?

Yes, BTU Calc is fully responsive and tested on iOS Safari and Android Chrome.

Will BTU Calc change my original file?

Never. BTU Calc only reads your input file and produces a new output file.