🇬🇧 Built for the UK
Convert anything,
the UK way.
Free calculators & converters built for the UK — Gas Mark, baking units, shoe sizes, VAT and more. Everything runs in your browser, nothing uploaded.
🇬🇧
Built for the UK
Gas Mark, imperial units, UK VAT — the conversions American tool sites cover poorly or not at all.
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Private by design
Every calculation runs in your browser. Your inputs never leave your device — GDPR friendly.
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Free & instant
No signup, no paywall. Pick a tool, get an answer in seconds.
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No data upload. GDPR friendly.
Every tool here runs entirely in your browser. We don't send your inputs anywhere — no tracking your calculations, no servers processing your numbers. That's our privacy promise to European users.