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Measurements for the kitchen, the road, the workshop and the lab.
Calculate loan payments, savings, annuities and sales tax.
Count calendar days and explore date tools.
Convert currencies using dated daily reference observations. Check the provider and date with your result.
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Explore driving distances, flying distances and travel calculations.
Read original page scans with chapter and page navigation.
Explore number bases, expressions, arithmetic, Roman numerals and circle equations.
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Whether you're planning a trip, cooking dinner, or comparing speeds, start with a real question.
Type a number, a starting unit, “to”, and the unit you want—for example, “12 inches to cm”. Your answer appears automatically. Select a suggestion with a tap or click, or use the arrow keys and Enter. Escape closes the suggestions. You can also enter From and To separately. The complete measurement catalog and converter help explain the accepted notation.
Use the full recognized measurement collection, including compound units, prefixes, constants and specialized measurements. Browse recognized measurements and the converter help for accepted notation.
Currency tools show daily reference rates with their actual observation dates. They are not real-time or transaction quotes. Banks and transfer services may apply different spreads and fees. Unavailable data is identified rather than replaced with sample values.
Yes. Enter a conversion in Smart Convert and find the answer directly below it. The unit controls are underneath. Use the navigation links to explore more tools, and choose Day or Night for a comfortable appearance.
Check that you entered a number and two supported units that measure the same thing. For example, inches can convert to centimeters, but not to kilograms. Finish a partial unit or select a suggestion to continue.