Starlight Tools directory

Studio Tools

18 free, browser-based tools. No account required.

Free to use
Runs in your browser
No account required

Audio Engineering (The Sound Lab), Video & Cinema (The Cutting Room), Photography & Optics (The Darkroom), and Gaming & Streaming utilities—all private, browser-based calculators. Jump into the BPM to Delay Time Calculator, Video Bitrate Calculator, Depth of Field Calculator, Shutter Angle Calculator, or Mouse Sensitivity Converter.

BPM to Delay Time

Convert BPM into milliseconds and Hertz for common note values to sync delays and reverbs.

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Audio File Size Calculator

Estimate PCM/WAV storage from sample rate, bit depth, channels, and duration.

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Sample Rate Calculator

See Nyquist frequency and theoretical dynamic range when comparing two rates and bit depths.

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Microphone sensitivity calculator showing dBV and mV inputs

Microphone Sensitivity Converter

Convert dBV/Pa to mV/Pa and back for gain staging and spec comparisons.

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Timelapse Calculator

Enter shoot length, target clip time, and FPS to get shutter interval and frame counts.

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Video bitrate calculator showing bitrate range and headroom

Video Bitrate & Streaming Calculator

Choose a stable bitrate for Twitch/YouTube that fits your upload bandwidth with headroom.

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Aspect Ratio Calculator

Solve for matching pixel width/height for 16:9, 2.39:1, 4:3, vertical, and custom ratios.

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Footage Storage Calculator

Estimate drive space for ProRes, H.264/H.265, or any custom bitrate over your shoot duration.

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Depth of Field Calculator

Get near/far limits, total DoF, and hyperfocal distance for your lens, aperture, and sensor.

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Field of View Calculator

Compute horizontal/vertical/diagonal FOV and frame coverage for any focal length and sensor.

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Crop Factor Calculator

Translate focal lengths between Full Frame, APS-C, and Micro Four Thirds for matched views.

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FPS to Hertz Calculator

See frame time and how your FPS lines up with monitor refresh for smoother output.

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Mouse Sensitivity Converter

Convert sensitivity between Valorant, CS:GO/CS2, Overwatch 2, and Apex using yaw values.

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Shutter Angle Calculator

Convert FPS and shutter angle into exposure time and equivalent shutter speed for cinema motion blur.

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ND Filter Calculator

Find the neutral density strength, filter factor, and optical density for your target shutter speed.

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Reverb Time Calculator

Calculate BPM-synced reverb decay and pre-delay values for vocals, drums, and sound design.

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Hyperfocal Distance Calculator

Find the focus distance that keeps infinity sharp, plus the nearest acceptable focus limit.

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Lens Equivalent Calculator

Match focal length and aperture equivalence across full frame, APS-C, Micro Four Thirds, and medium format.

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About These Studio Tools

These audio, video, photo, and gaming calculators run entirely in your browser—no uploads or accounts. They cover timing, storage, bitrate, framing, optics, and sensitivity workflows.

Popular picks include the BPM to Delay Time Calculator, Video Bitrate Calculator, Shutter Angle Calculator, ND Filter Calculator, Depth of Field Calculator, and Mouse Sensitivity Converter. Use them free anytime.