About CalcNest

CalcNest is a free farm of everyday and finance calculators — tip, percentage, margin, salary to hourly, discount, and compound interest. The tagline says it plainly: free calculators — tip, percent, margin, and more.

Privacy

All math runs locally in your browser. We do not send bills, salaries, or rates to a server. There are no analytics keys, no accounts, and no ads in this open-source build. Your numbers stay on your device.

Calculators

• Tip Calculator — Split the bill with tip percent and per-person totals. Free tip calculator — no signup.
• Percentage Calculator — Find X% of Y, what percent X is of Y, and percent change. Instant percentage math.
• Margin Calculator — Cost and sell price → profit margin % and markup %. Clear margin vs markup.
• Salary to Hourly Calculator — Convert annual salary ↔ hourly rate with hours/week and weeks/year presets.
• Discount Calculator — Original price and discount % → final price and savings. Quick sale math.
• Compound Interest Calculator — Principal, rate, compounds per year, and time → future value. Compound growth free.

Deploy

The site is a static Next.js export. Drop the out/ folder on Cloudflare Pages, Netlify, GitHub Pages, or any static host.