Home › Engineering Toolkit › Rectangle / Box
▭ Rectangle / Box
Area, perimeter, diagonal — and volume if you add a depth.
The Mixadù Rectangle / Box is a free online calculator that area, perimeter, diagonal — and volume if you add a depth. It runs entirely in your browser — no sign-up, no uploads, and your inputs never leave your device. Supported units include FT, IN, M, CM, MM.
- Instant results as you type
- Free — no login or sign-up
- Private: runs entirely in your browser
- Part of the 91-tool Engineering Toolkit
Frequently asked questions
Is the Rectangle / Box free?
Yes. The Rectangle / Box is completely free, with no login or sign-up.
Are my inputs uploaded anywhere?
No. The Rectangle / Box runs entirely in your browser; your inputs never leave your device.
Which units does the Rectangle / Box support?
It supports FT, IN, M, CM, MM.
Does the Rectangle / Box work on mobile?
Yes. It is fully responsive and works on phones and tablets.