Developer Tools Calculators

Simplify aspect ratios and calculate matching dimensions.

Estimate video file size from bitrate, duration, audio, and overhead.

Count words, characters, sentences, and estimated reading time from pasted text.

Count characters, characters without spaces, lines, and UTF-8 bytes.

Calculate reading speed in words per minute and estimate time for a target word count.

Calculate screen or image pixel density from resolution and diagonal size.

Generate a CSS clamp() expression from min and max size and viewport widths.

Estimate Base64 encoded length, padding, and size overhead from text or payload bytes.

Estimate JSON byte size, minified size, and parse validity from pasted JSON.

Estimate download time from file size, connection speed, and overhead.