Math Tools
Utilities for mathematical calculations.
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Percentage Calculator
Run percent-of, percent-change, and ratio calculations.
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Length Converter
Convert between meters, feet, inches, and other length units.
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Fashion Size Converter
Compare clothing and shoe sizes across regional standards.
About Math Tools
LivHome's Math tools are a free collection of browser-based utilities for everyday calculations and unit conversions.
This group covers three common tasks: a Percentage Calculator for working out discounts, shares of a total, change rates, and original values; a Length Converter for switching between metric (m, cm), imperial (inch, ft, yd), and traditional Korean units; and a Fashion Size Converter for matching shoe, clothing, and ring sizes across US, UK, EU, and Korean standards.
Choose the Percentage Calculator when a question involves a percent, such as a sale price or how much one number is of another. Use the Length Converter for measurements and the Fashion Size Converter when shopping across regions. The three calculation functions use the values you enter in the browser.
Results are computed from the inputs and reference data you provide. For sizing, fit can vary by brand, so treat conversions as a starting point and check a maker's own size chart when it matters.
Frequently asked questions
- Are these math tools free to use?
- Yes. Every tool in this category is free with no sign-up or account required.
- What network requests can the page make?
- The calculations run in the browser, while advertising, analytics and sign-in scripts can make separate requests. Sharing, copying or downloading can disclose the chosen content. The Privacy Policy describes these boundaries.
- Why don't fashion sizes always match between countries?
- Size standards differ by region and brand, so a converted size is a close estimate. Compare it with the seller's own size chart before buying.
For account, sync, advertising and analytics data flows, see the Privacy Policy.