UK Calculator Pro - Tax, VAT & Salary

About

UK Calculator Pro brings essential UK financial tools right to your browser toolbar. No more searching for calculators — get instant results with one click.

🧮 ADVANCED CALCULATOR
Full-featured calculator with percentage (%), square root (√), x², memory functions (MC, MR, M+, M−), tip calculator, and complete keyboard support. Works just like a real calculator — but always one click away.

📊 PERCENTAGE CALCULATOR (4 modes)
• What is X% of Y? — Instantly calculate percentages
• X is what % of Y? — Find the percentage relationship
• Percentage Change — Calculate increase or decrease between two values
• Add/Remove % — Add or subtract a percentage from any amount
All calculations update live as you type — no button needed.

💰 UK TAX CALCULATOR (2025/26)
Enter your annual salary and instantly see your take-home pay after:
• Income Tax (20%, 40%, 45% bands)
• National Insurance (8% / 2%)
• Personal Allowance (£12,570, tapered above £100K)
• Effective tax rate
Supports both England/Wales/NI and Scottish tax rates.

🧾 VAT CALCULATOR
• Add VAT at 20%, 5% or 0% to any amount
• Remove VAT to find the net price
• Instant results — perfect for invoicing, quotes and price checks

🔄 UNIT CONVERTER (12 conversions)
• Weight: KG ↔ Stone & Pounds, KG ↔ Pounds
• Length: CM ↔ Inches, Miles ↔ KM
• Temperature: °C ↔ °F
• Volume: Litres ↔ UK Gallons

🖱️ RIGHT-CLICK CONTEXT MENU
Select any number on any webpage and right-click to:
• Add 20% VAT instantly
• Remove VAT
• Convert units (kg/lbs/cm/inches)
Results appear as a sleek overlay — no popup needed.

⌨️ KEYBOARD SHORTCUTS
Full keyboard support in calculator mode: 0-9, +, −, ×, ÷, Enter, Escape, Backspace, %

WHY UK CALCULATOR PRO?
✅ Updated for 2025/26 UK tax year
✅ Works offline — all calculations in your browser
✅ No data collection — completely private
✅ Lightweight (under 15KB)
✅ No ads in the extension
✅ Free forever

Perfect for accountants, freelancers, small business owners, HR professionals, and anyone who works with UK tax, VAT or unit conversions daily.

From the makers of ukcalculator.com — the UK's comprehensive calculator hub with 2,500+ free calculators.

Version 1.0.0 | Manifest V3 | Chrome, Edge & Brave compatible