Converters
Change file formats and units.
Switch images between common formats and convert measurements between metric and imperial units.
All Converters (3)
3 ready to use.
Good to know
- Converting JPG to PNG doesn’t improve quality; it only changes the format, and the file gets bigger.
- PNG to JPG fills see-through areas with a background colour you choose.
- The Unit Converter uses exact, internationally defined conversion factors.
Which tool do I need?
| If you want to… | Use |
|---|---|
| A website or form only accepts PNG images | JPG to PNG |
| Make a PNG photo or screenshot smaller, or a form only accepts JPG | PNG to JPG |
| Convert centimetres to inches, kilograms to pounds, °C to °F and more | Unit Converter |
Questions about Converters
Is JPG or PNG better?
JPG is best for photos: it makes small files by leaving out detail you rarely notice. PNG keeps every pixel exactly and supports transparent backgrounds, so it suits screenshots, logos and images with text. For a photo, a PNG file is usually several times larger than a JPG.
What happens to transparent areas when I convert PNG to JPG?
JPG cannot store transparency, so see-through areas are filled with a background colour. PNG to JPG uses white unless you choose another colour.
How accurate is the Unit Converter?
It uses the exact international definitions, for example 1 inch = 2.54 cm and 1 pound = 0.45359237 kg. Results are rounded only for display.
Helpful guides
Image Tools