Business Calculator by Useless Brain

Business Calculator is a premium, all-in-one suite of essential business tools — right in your browser.

Whether you run a shop, freelancing business, startup, or manage personal finances, get accurate results instantly without opening spreadsheets or websites.

★ 24 PROFESSIONAL CALCULATORS
• Profit & Loss
• Margin & Markup
• VAT & Tax
• GST (CGST / SGST / IGST)
• Discount & Percentage
• Commission
• Currency converter (optional live rates)
• Break-even analysis
• ROI
• Loan EMI
• Simple & Compound Interest
• Invoice total
• Selling price & Cost price
• Inventory profit
• Shipping cost
• Business days
• Salary
• Unit price
• Custom calculator

★ DESIGNED FOR SPEED
• Instant live calculations
• Clear input validation
• One-tap copy of results and formulas
• Pin and favorite the tools you use most
• Searchable history timeline

★ BEAUTIFUL & ACCESSIBLE
• Soft light neumorphic UI with elegant maroon accents
• Keyboard-friendly navigation
• Clean, focused popup — no clutter

★ 10 LANGUAGES
English, Arabic, Bengali, Chinese, French, Hindi, Portuguese, Russian, Spanish, and Urdu.

★ PRIVACY-FIRST & OFFLINE-READY
• No accounts required
• No analytics or trackers
• Settings, history, pins, and favorites stay on your device
• Works offline (currency rates need network when you want live FX; rates can be cached)

★ PERFECT FOR
Entrepreneurs • Freelancers • Accountants • Students • Shop owners • Anyone who needs quick business math

Made with ❤ by Mr Tarek