Audio & Video
Streaming Bitrate Calculator
Add the video and audio bitrates of one outgoing live stream, then apply an optional planning margin. The result is an upload-capacity estimate, not an automatic quality recommendation.
Video Call Bandwidth Calculator
Estimate the combined upload and download capacity for simultaneous calls sharing one connection. Enter the rate for each local endpoint and keep the two directions separate.
Megapixel Calculator
Convert image pixel dimensions to megapixels, or estimate dimensions from a target megapixel count and aspect ratio. This counts pixels; it does not assess camera or image quality.
Microphone Test
Check that the selected microphone delivers a changing audio signal to this browser. Start the test, grant microphone access and watch the relative level while speaking. A moving meter is evidence of incoming audio, not a complete hardware assessment.
Webcam Test
Open a live preview from an available camera and check the stream settings reported by the browser. The preview uses the actual permitted camera stream. Start and Stop controls keep the capture session explicit.
Left and Right Speaker Test
Play a generated tone through the browser’s current audio output. Compare Left, Right and Both to check what is audible from the selected system output. This is a listening check; the page cannot hear the speakers.
Video File Size Calculator
Estimate video storage from average video bitrate, audio bitrate and duration. Add a separate percentage allowance and compare decimal MB/GB with binary MiB/GiB. The calculator uses entered values; it does not inspect, compress or upload a video.
Microphone Gain Calculator
Calculate an ideal gain change from an existing digital sample-peak reading and a chosen target, both in dBFS. See the amplitude multiplier and target margin below full scale. Enter readings manually; this calculator does not access the microphone or adjust a device.
Twitch Panel Maker
Design a 320-pixel-wide Twitch panel with editable text, colours and height. Preview it at its export size and download a PNG without an account.
Podcast Name Generator
Turn a topic into podcast title ideas with descriptive, conversation or story patterns. Save favourites and download a shortlist without sending your topic to an AI service.
Video Aspect Ratio Calculator
Find a video’s exact pixel ratio and largest crop for a target shape. Enter dimensions to plan an edit without uploading a file.
Audio File Size Calculator
Estimate PCM sample data or compressed audio from duration and total bitrate. Compare decimal MB with binary MiB before planning storage.
Image Print Size and DPI Calculator
Calculate print dimensions and effective PPI from image pixels and width. Find the pixels needed at a chosen print-density target.
Guides
Screen Resolution, Pixel Density and Scaling Explained
Calculate physical pixel density from the active diagonal, distinguish signal resolution from scaling, and narrow blurry text with repeatable checks.
Read Digital Microphone Levels Before Choosing Gain
Use the meter's definition and measurement stage before calculating a gain change. Digital levels describe samples, not room sound pressure.
Estimate Video File Size from Average Bitrate
Choose stream rates, calculate bytes and compare the estimate with the exported file.
Design Readable Twitch Panels and Verify the Exported PNG
Plan panel labels, spacing, color and exports with checks that match the actual image maker.
Check Clan and Podcast Name Ideas Before Using Them
Use a repeatable shortlist, spoken test and existing-use review before adopting a generated name.