Question 1

How do I convert 16:9 to vertical (9:16)?

Accepted Answer

Set the source to your 16:9 resolution (e.g. 1920×1080), pick the 9:16 target and Fill mode. The tool scales the source to cover the 1080×1920 frame and crops the sides — it shows the exact scale percentage, the pixels cropped off each side, and how far you can pan to reframe your subject.

Question 2

What size is a Reels, Shorts or TikTok video?

Accepted Answer

Vertical 9:16 — 1080×1920 pixels is the standard (2160×3840 for 4K). 4:5 (1080×1350) is also common for Instagram feed. All are included as presets.

Question 3

How much of my frame gets cropped?

Accepted Answer

It depends on the source and target ratios. In Fill mode the tool shows the exact crop in pixels per side and the surviving visible region; converting 16:9 to 9:16, for example, crops a large amount off the left and right. The visual preview shades exactly what's lost.

Question 4

Is it free?

Accepted Answer

Completely free, with no sign-up and no upload — the calculator runs entirely in your browser, and any image you preview stays on your device.

Aspect ratio & reframe calculator

Source

Target

Results

Preview

Preview on your own still

What is an aspect ratio?

Common delivery sizes

How to reframe between ratios

Frequently asked questions