InYourHand

Convert units

Enter a number and a unit to see the value in every unit of the same kind.

  • No registration, No login
  • Zero privacy leaks
  • No AI training
  • Free forever
  • Eco: no server processing: Processing happens only on your device. No data-center power or cooling water is used.

🤲Your files are yours. Keep them in your hand.

Options

Calculated on your device. Results are rounded to 10 digits.

How to use Unit Converter

  1. Type the text or URL you want to turn into a QR code.
  2. Reorder or adjust the settings, then hit the big button.
  3. When it's ready, click "Save." Your files never leave your device.

FAQ

Which value does it use for one tatami (jo)?

1.62 m², the value used in Japanese real-estate advertising rules. Actual mat sizes vary by region.

How is tsubo converted?

One tsubo is 400/121 m² (about 3.3058 m²).

Is it safe to use Unit Converter with my files?

Yes. Your files are never uploaded — they're processed only inside your browser. Every page is served with a policy that blocks outgoing connections (Content-Security-Policy connect-src 'none'), and the counter in the bottom-left shows the data sent: 0 bytes.

Is it free? Do I need an account?

It's completely free, no account needed, and there are no usage limits.

Does it work on my phone?

Yes. It works in mobile browsers on iPhone and Android. For very large files, a computer will be faster.

More tools

Data sent to server: 0 bytes