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Currency & unitsUSD · Imperial

Using USD and Imperial. You can change either choice.

Currency changes the unit of your amounts, not their value. No exchange rate or country-specific tax, benefit, or lending rule is applied. Money results and loan schedules retain the calculators’ two-decimal precision; this does not apply local cash-rounding rules.

Measurement changes convert valid existing quantities. Incomplete entries stay as typed; finish them using the units shown. Other units stay as labeled. Enter numbers as 1,234.56; a decimal comma is not supported.

Initial suggestions use only your browser’s language region. Choices are saved on this browser; no location lookup is used.

Privacy Notice

How we handle information when you use CalcAhead.

Last updated: September 23, 2026

Your calculations

Calculations run in your browser. We do not send your calculator inputs or results to our servers or include them in analytics events. Your currency and measurement preferences are saved on your device.

Cookies and website analytics

We use Pageview and Google Analytics to understand website visits and improve the site. These services may receive pages visited, referring pages, browser and device details, and technical request information such as an IP address. Google Analytics may use cookies to distinguish visits.

You can manage cookies and stored website data in your browser settings. Clearing website data also resets saved preferences. See Google’s privacy policy for its data practices.

Website hosting

Cloudflare hosts and protects CalcAhead. It may process technical request information to deliver the site and maintain security. See Cloudflare’s privacy policy.

When you contact us

If you email us, we use your email address, message and any attachments to respond to your enquiry. Our email services are provided by Cloudflare and Google. Please avoid sending sensitive personal information.

Questions and updates

For privacy questions or requests about information you have sent us, email [email protected]. We may update this notice as the site changes; the date above shows the latest revision.