Convert JPG to Grayscale
Turn any JPEG image into grayscale or pure black & white. Free, instant, no upload.
Drag & drop a JPG image here
or click to browse
Converting a photo to grayscale strips away color distractions and lets composition, light, and texture take center stage. Whether you're going for a classic black-and-white look or need a desaturated image for a document, this tool does it instantly in your browser using a perceptually accurate luminance formula.
Why Use Our Grayscale Converter?
100% Private
All conversion happens in your browser. Images never leave your device.
Two Modes
Choose smooth grayscale or stark black & white (binary threshold).
Luminance-Based
Uses ITU-R BT.601 formula for perceptually accurate grayscale.
High Quality
92% JPEG quality output preserves detail in grayscale tones.
Works Everywhere
Desktop, tablet, or mobile — no software to install.
No Watermark
Download clean images with no branding or watermarks.