All-in-One Tools Collection

A broad collection of online tools for development, AI, design, and productivity tasks.

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Convert whole calendar years to exact days from a specified start year

Convert kilometers per hour to knots with configurable decimal precision

Convert knots to kilometers per hour with configurable decimal precision

Convert knots to miles per hour with configurable decimal precision

Convert miles per hour to knots with configurable decimal precision

Convert running pace in minutes per kilometer to kilometers per hour

Convert running pace in minutes per mile to miles per hour

Extract audio from video files with advanced options - multiple formats, quality settings, and audio enhancement

Normalize audio in video files to consistent loudness levels using EBU R128 standard

Remove the audio track from a video file, keeping only the video stream

Adjust the audio volume in a video file by increasing, decreasing, or normalizing sound levels

Convert kilometers per hour to meters per second with configurable decimal precision