About LeeChuanjing Pay
LeeChuanjing Pay is a small independent project created to make everyday paycheck math effortless and transparent. We build free calculators for the questions people actually type into search: how much is my hourly rate as a salary?, what will a 5% raise add?, how many overtime dollars did I earn?, and exactly how old am I in days?
Our approach
- Privacy first. Every calculation happens in your browser with JavaScript. The numbers you enter never leave your device and are never stored on a server.
- Standard formulas. We use widely accepted calculations: 2,080 paid hours for full-time equivalence, 1.5× overtime under the U.S. Fair Labor Standards Act, and inclusive date arithmetic. Where local rules differ, we say so on the page.
- Explained, not hidden. Each tool shows its formula, a worked example, reference tables and FAQs so you can verify the result yourself.
Who we are
We are a two-person team (a developer and a payroll professional) who were tired of spreadsheet errors and ad-cluttered tools. LeeChuanjing Pay is supported by lightweight, non-intrusive advertising so the calculators stay free for everyone.
Editorial standards
Our content is written and reviewed for accuracy. Calculators are updated when standard definitions change. We are not a lender, employer or government agency, and our figures are estimates for planning, not official records.
Questions or corrections? Visit our Contact page.