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✨ CalcPlex.net — Free Online Calculators, Pakistan & Global

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50+ free calculators for finance, health, math, education & Pakistan local tools — EMI, BMI, GPA, Zakat, FBR Tax & more. CalcPlex.net: the only free calculator suite built for Pakistan and global users. Works on every device, always free.

Popular: EMI Calculator BMI Calculator Zakat Calculator FBR Tax 2025-26 GPA Calculator Percentage Age Calculator
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8 categories · 50+ free calculators
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Finance

Loans, investments & financial planning

  • EMI / Loan Calculator
  • Compound Interest
  • Investment ROI (CAGR)
3 Tools
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Health

BMI, calories, macros & fitness metrics

  • BMI Calculator
  • TDEE & Calorie Calculator
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Math & Science

Percentage, statistics, fractions & more

  • Percentage Calculator
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Education

GPA, CGPA, grades & exam planning

  • GPA Calculator (4.0/10.0)
  • CGPA & Weighted Grade
  • Final Exam Score Needed
7 Tools
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Time & Date

Age, date difference & timezone tools

  • Age Calculator
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Unit Converter

Length, weight, temperature, currency

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8+ Units
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Business

GST, discounts, invoices & profit tools

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Pakistan Local

Zakat, Nisab, FBR Tax & Islamic tools

  • 🌙 Zakat Calculator 2025-26
  • 📋 FBR Tax Slab 2025-26
  • 🏠 Stamp Duty (All Provinces)
5 Tools
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Blog & Guides

Pakistan finance & tax explained simply

  • FBR Tax Slabs 2025-26 Guide
  • How to Calculate Zakat on Gold
  • Filer vs Non-Filer Explained
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🔥 Most Popular Tools

Highest searched calculators worldwide
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EMI / Loan Calculator
Monthly installments for home, car & personal loans with amortization
Finance
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BMI Calculator
Body mass index with health category, risk & ideal weight
Health
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Percentage Calculator
X% of Y, % change, discount, markup & reverse percentage
Math
🎂
Age Calculator
Exact age in years, months, days + next birthday countdown
Time
🎓
GPA / CGPA Calculator
4.0/10.0 scales, semester & cumulative GPA, honor status
Education
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Zakat Calculator
Nisab check, all assets, 2.5% Zakat — Shariah compliant 2025
Pakistan

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All 50+ calculators completely free. No hidden charges, no premium tiers, no paywalls for any tool.
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Works on Any Device
Fully responsive — perfectly optimized for mobile phones, tablets, laptops and desktops.
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Verified Accurate Formulas
Every calculator uses verified formulas — FBR official tax slabs, Islamic scholarly standards, international financial formulas.
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Instant Results
No page reloads, no waiting. Results appear as you type with full breakdowns, charts and tables.
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Pakistan-First Design
Unique Pakistan tools: Zakat, Nisab, FBR Tax 2025-26, Stamp Duty, Islamic Bank EMI — not found together anywhere else.
🇵🇰 Pakistan Exclusive

Islamic & Local Finance Tools

Specially built for Pakistani Muslims — Zakat, Nisab, FBR Salary Tax 2025-26, Property Stamp Duty & Pakistan Bank EMI. Accurate, Shariah-compliant calculations.

🌙 Zakat Calculator ⚖️ Nisab Checker 📋 FBR Tax 2025-26 🏠 Stamp Duty 🏦 Bank EMI
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Frequently Asked Questions

Quick answers to common calculator questions
How do I calculate EMI for a home loan?▾
EMI formula: EMI = [P × R × (1+R)N] ÷ [(1+R)N – 1], where P = Principal, R = Monthly rate (annual ÷ 12 ÷ 100), N = Months. Example: Rs 50 lac at 12% for 20 years → EMI ≈ Rs 55,054. Use our free EMI calculator for instant results with full amortization schedule.
How is Zakat calculated in Pakistan 2025-2026?▾
Zakat is 2.5% of your total zakatable wealth (cash, gold, silver, investments, business assets minus liabilities) held for one full lunar year (Haul) above the Nisab threshold. Nisab = 87.48g gold or 612.36g silver. Use our Zakat calculator with current gold/silver prices.
What are the FBR salary tax slabs 2025-26?▾
FBR Tax Slabs 2025-26: 0% → up to Rs 600,000 · 1% → Rs 600K–1.2M · Rs 6,000 + 11% → Rs 1.2M–2.2M · Rs 116,000 + 23% → Rs 2.2M–3.2M · Rs 346,000 + 30% → Rs 3.2M–4.1M · Rs 616,000 + 35% → above Rs 4.1M. Calculate exact deductions with our FBR tax calculator.
How do I calculate BMI?▾
BMI = weight (kg) ÷ height² (m²). Example: 70 kg, 1.75 m → BMI = 70 ÷ 3.06 = 22.9 (Normal). Ranges: Under 18.5 = Underweight · 18.5–24.9 = Healthy · 25–29.9 = Overweight · 30+ = Obese. Our BMI calculator also calculates calories, body fat & ideal weight automatically.
How to calculate GPA on 4.0 and 10.0 scale?▾
GPA = Total Quality Points ÷ Total Credit Hours. Quality Points = Grade Point × Credit Hours. Grade scale (4.0): A/A+ = 4.0, A– = 3.7, B+ = 3.3, B = 3.0, C = 2.0, F = 0. Our GPA calculator supports 4.0, 4.33, 5.0 and 10.0 scales with honor status (Summa, Magna, Cum Laude).
Are CalcPlex calculators free and private?▾
Yes — 100% free, no signup, no limits. All 50+ calculators work on any device. All calculations run locally in your browser using JavaScript — we never see or store your numbers. CalcPlex is served over HTTPS with full security headers.