DAYAVA — БЕСПЛАТНЫЙ ИНСТРУМЕНТ
Convert XLS to XLSX online
Файлы не покидают ваш компьютер — вся обработка происходит в браузере
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Load the .xls (or .ods) file, start the conversion and download the .xlsx. It runs in your browser with no need to install Excel or create an account, and you can convert several files.
XLSX is the current Excel format: it opens in more applications, usually takes less space and is supported by many online tools and data-import systems.
Data, formulas and common formatting are usually kept. Macros (VBA) are not carried over because .xlsx cannot store them, and very specific elements may change. Check the result.
No. The conversion runs in your browser and your spreadsheets never leave your device, which matters for financial or customer data. Large files may take longer to process.