About HourMath

HourMath is a set of free tools for hourly workers, shift managers and small-business owners who need to total work hours and figure out pay — without spreadsheets, sign-ups, or guesswork.

What makes it different

• Correct overtime, including state rules. Most free calculators only handle the federal 40-hour rule. We apply real state daily-overtime law — California daily overtime and double-time, the 7th-consecutive-day premium, and Alaska, Colorado and Nevada rules — with sources cited.
• Private by design. Everything runs in your browser. Your hours and pay are never uploaded or stored.
• No sign-up, no email wall. Get your answer instantly.
• Printable. Save or print a clean copy for your records.

Our tools

Time Card Calculator · Overtime Calculator · Overtime by State · California Overtime · Nevada Overtime · Colorado Overtime · Alaska Overtime · Shift Differential

About the author

HourMath is built and maintained by Nandu Kannan, a software engineer who builds independent web tools. Every overtime rule on this site is researched from primary sources — the federal Fair Labor Standards Act and each state's own statute and labor department (CA Labor Code §510, Alaska Stat. §23.10.060, the Colorado COMPS Order, and Nevada NRS §608.018) — and each calculator links to the source it applies, so you can verify the rule yourself. Found something that looks off? Let us know and it gets fixed.

A note on accuracy

We work hard to keep the math and the labor-law rules correct and up to date, but wage law is complex and changes. Our tools are informational and not a substitute for professional or official guidance. See our Terms of Use.