Percentage, Interest, Area & Profit–Loss Calculator – Formula, Working & Features Guide

Percentage Calculator

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Formula: (x / 100) × y

Simple Interest

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SI = (P × R × T) / 100

Compound Interest

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CI = P(1+r/100)t − P

Area of Circle

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π × r²

Profit / Loss

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Profit = SP − CP / Loss = CP − SP

Introduction

Maths aur finance ke calculations daily life ka important hissa hain. Percentage nikalna ho, interest calculate karna ho, circle ka area ya profit–loss ka exact amount – manual calculation me galti hone ke chances hote hain.

Isliye online calculators ka use karke:

  • Time bachta hai

  • Calculation fast hoti hai

  • Result accurate milta hai

Is blog me hum detail me samjhenge sabhi calculators ke working formulas aur unke extra features.

📊 Percentage Calculator – Formula & Working

Percentage ka matlab hota hai “per hundred”. Ye marks, discount, tax aur comparison ke liye use hota hai.

🔢 Percentage Formula

Percentage = (Part / Total Value) × 100

✅ Example

Percentage = ?
Of Value = 500
Part = 75

Percentage = (75 / 500) × 100 = 15%

🛠 Percentage Calculator Use Kaise Kare

  1. Percentage ya value enter karein

  2. Of Value fill karein

  3. Calculate button click karein

  4. Final percentage instantly show ho jayegi

👉 Useful for students, discounts, GST, marks calculation.

💵 Simple Interest Calculator – Formula & Working

Simple Interest (SI) me interest sirf principal amount par lagta hai.

🔢 Simple Interest Formula

SI = (Principal × Rate × Time) / 100

Total Amount = Principal + SI

✅ Example

Principal = ₹10,000
Rate = 8%
Time = 2 Years

SI = (10,000 × 8 × 2) / 100 = ₹1,600
Total Amount = ₹11,600

🛠 Simple Interest Calculator Use

  1. Principal amount enter karein

  2. Interest rate (%) dalein

  3. Time (years) fill karein

  4. Calculate par click karein

👉 Useful for short-term loans, basic finance learning.

📈 Compound Interest Calculator – Formula & Working

Compound Interest (CI) me interest principal + pehle ka interest dono par lagta hai.

🔢 Compound Interest Formula

CI = P (1 + R/100)ᵀ – P

Where:
P = Principal
R = Rate
T = Time (Years)

✅ Example

Principal = ₹5,000
Rate = 10%
Time = 3 Years

Amount = 5000 (1.10)³ = ₹6,655
CI = 6,655 – 5,000 = ₹1,655

🛠 Compound Interest Calculator Use

  1. Principal enter karein

  2. Rate (%) fill karein

  3. Time (years) enter karein

  4. Calculate button dabayein

👉 Best for FD, RD, mutual funds, long-term investments.

⭕ Area of Circle Calculator – Formula & Working

Circle ka area maths aur geometry ka important part hai.

🔢 Area of Circle Formula

Area = π × r²

Where:
π (Pi) ≈ 3.14
r = Radius

✅ Example

Radius = 7 cm

Area = 3.14 × 7 × 7 = 153.86 cm²

🛠 Area of Circle Calculator Use

  1. Radius enter karein

  2. Calculate par click karein

  3. Area instantly show hoga

👉 Useful for students, construction, design, geometry problems.

📉 Profit / Loss Calculator – Formula & Working

Profit aur Loss business aur trading ka base concept hai.

🔢 Profit & Loss Formula

Profit = Selling Price – Cost Price
Loss = Cost Price – Selling Price

🔢 Profit / Loss Percentage

Profit % = (Profit / Cost Price) × 100
Loss % = (Loss / Cost Price) × 100

✅ Example

Cost Price = ₹2,000
Selling Price = ₹2,500

Profit = 2,500 – 2,000 = ₹500
Profit % = (500 / 2,000) × 100 = 25%

🛠 Profit / Loss Calculator Use

  1. Cost Price enter karein

  2. Selling Price fill karein

  3. Calculate button click karein

👉 Helpful for shopkeepers, traders, online sellers.

🔘 Calculator Buttons & Extra Features Explained

✅ Calculate

  • Formula apply karta hai

  • Result turant show karta hai

🔄 Reset

  • Sab input fields clear kar deta hai

  • Fresh calculation ke liye ready

🖨 Print

  • Result ka print ya PDF download option

📋 Details

  • Formula aur calculation steps dikhata hai

💼 Invest Now

  • Financial planning ya investment page par redirect

🔚 Conclusion

Percentage, Interest, Area aur Profit/Loss calculators daily-life aur exam dono ke liye powerful tools hain. Ye calculators:

  • Complex maths ko simple banate hain

  • Accurate aur fast result dete hain

  • Beginners ke liye easy to use hote hain

Chahe aap student, business owner, investor ya job professional ho – ye calculators aapki calculation needs ko perfect tarike se solve karte hain.

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