Image Tools
Black & White Converter
🔒 Runs in your browser
Convert any image to black and white using luminance weighting. Runs entirely in your browser — no upload.
Uses the luminance formula (0.299R + 0.587G + 0.114B) for perceptually accurate greyscale. Your image never leaves the browser.
How to Convert an Image to Black and White Free (2026)
Convert any image to greyscale entirely in your browser using the luminance formula. Supports JPG, PNG, WebP, and GIF. No upload, no account, no watermark.