oztolitre.com is a free, single-purpose tool: converting fluid ounces to litres (and back) with the exact internationally defined constants. No account, no clutter — type a number and read the answer.
We built it because most unit converters quietly ignore the difference between US and UK (imperial) fluid ounces, which are different sizes. Every conversion here is computed at full precision from the official definitions: 1 US fl oz = 29.5735295625 mL and 1 UK fl oz = 28.4130625 mL.
The site is fully static, loads in a fraction of a second, and works the same on a phone in the kitchen as on a desktop. If you spot an error or have a suggestion, we genuinely want to hear it — see the Contact page.