Video Aspect Ratio Calculator

Video sizing

Calculate video aspect ratios and matching dimensions for common formats.

Current width

Current height

Target ratio

Known width

Known height

Current ratio16:9Decimal1.778Height from width1280x720Width from height1280x720

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Choose a local video file or enter the video values you want to calculate.

The tool works in your browser without uploading media files.

Review the metadata, preview, frame, sizing, or bitrate estimate.

Yes. It is free and runs in your browser.

No. Local video files stay in your browser.

Explore more free online tools from Tool Nova.

Resize images online in your browser.

Estimate bitrate from file size and duration, or file size from target bitrate.

Inspect duration, resolution, file size, and estimated bitrate from a local video file.

Capture a PNG thumbnail frame from a local video file.