3D Vector Calculator
Three vectors, one perspective scene. Drag to orbit and wheel or pinch to zoom — the projection, depth ordering and axis arrows are computed, not faked with CSS.
eye distance 16.0 · yaw 46° · pitch 26°
Vectors
Working
a·b = (3)( 1)( 0) · (0)( 2)( 3)
= 3·0 + 1·2 + 0·3 = 2
a·b = |a||b|cos θ → cos θ = 0.1754
θ = 79.897° (1.3945 rad)
a·b ≠ 0, so the vectors are not perpendicular.
Summary
- |a|
- 3.1623
- |b|
- 3.6056
- |c|
- 2.2361
- a · b
- 2
- a × b
- (3, -9, 6)
- angle(a, b)
- 79.897°
- proj_b a
- (0, 0.3077, 0.4615)
- a · (b × c)
- 15
About this tool
The scene uses a real camera basis and a perspective divide, then sorts every line, face and label back-to-front so the parallelograms and the spanned box overlap correctly — no CSS 3D transforms. Values are recomputed on each input change, and the working panel shows each formula with your own numbers substituted. Everything runs in your browser.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is 3D Vector Calculator really free?
Yes. 3D Vector Calculator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does 3D Vector Calculator upload my data?
No. 3D Vector Calculator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and 3D Vector Calculator is ready to use on desktop or mobile.
Does 3D Vector Calculator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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