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CalcPro

CalcPro - Smart Online Calculator

💡 Calculate Smarter with CalcPro — 30+ Powerful Tools for Finance, Business, Education & Everyday Life.

30+ tools · Live currency · Fast · Free · No signup

✓ SIP & Investment✓ Income Tax ✓ BMI & Health✓ Live Currency ✓ Age & Date✓ Discount & GST ✓ Loan & EMI✓ Statistics

30+

Calculators

35+

Currencies

100%

Free

Fast

Load Speed

All Tools

🔢

Basic

Add, subtract, multiply

🔬

Scientific

sin, cos, log, sqrt, pi

💰

Finance

EMI, GST, CI, SI, FD

📈

SIPHot

Mutual fund returns

💵

Income TaxHot

Old vs New regime

⚖️

Health

BMI, calories, BMR

🏢

Loan

Home, car, personal

🏷️

Discount

Sale price & savings

📊

PercentageNew

%, increase, difference

🎂

Age

Exact age, birthday

📅

Date & Time

Days between, live clock

📉

StatisticsNew

Mean, median, SD

🧾

BusinessNew

Tip, fuel, electricity

💱

Currency

Live rates, 35+ pairs

📏

Units

Length, weight, temp

📚

Formulas

All math formulas

💵

SalaryNew

CTC to in-hand calculator

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NPSNew

Pension corpus calculator

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Rent vs BuyNew

Ghar lena better ya rent?

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InvoiceNew

GST invoice generator

Why CalcPro?

⚡ Instant & Accurate

All 30+ calculators run instantly in your browser. No server, no delay, full precision results.

🌐 Live Currency Rates

3 API fallbacks ensure you always get real exchange rates for 35+ currencies worldwide.

💵 Income Tax Calculator

Compare Old vs New tax regime with slabs, HRA exemption and deduction benefits for FY 2025-26.

📈 SIP & Investment

SIP, lump sum, PPF, FD/RD, Step-Up SIP — calculate your wealth growth over any period.

🇺🇸 Used Across the USA

From New York to California — students, freelancers, small businesses and professionals across the US use CalcPro daily for EMI, tax, tip splits and currency conversion.

🔒 100% Private

Everything runs locally in your browser. Nothing is sent to any server, ever.

CalcPro provides free online calculation tools for students, professionals, businesses and daily life. Calculate EMI, GST, interest, age, discounts, currency exchange and unit conversions instantly.

CalcPro is a free online calculator platform offering Scientific Calculator, EMI Calculator, GST Calculator, Loan Calculator, Age Calculator, Currency Converter, Unit Converter and many more useful tools.

CalcPro

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EMI Calculator

Principal (₹)

Annual Rate (%)

Tenure

Type

SIP Calculator

Monthly Investment (₹)

Expected Return (%/yr)

Time Period (Years)

Income Tax Calculator (India FY 2025-26)

Annual Income (₹)

Age

HRA Received (₹)

Rent Paid (₹)

80C Investment (₹ max 1.5L)

80D Medical (₹ max 25K)

Other Deductions (₹)

BMI Calculator

Weight (kg)

Height (cm)

Gender

Home Loan Calculator

Loan Amount (₹)

Annual Interest (%)

Tenure

Type

Down Payment (₹)

Single Discount

Original Price (₹)

Discount (%)

What is X% of Y?

Percentage (%)

Of Value

Age Calculator

Date of Birth

Calculate On

Next Birthday

Date of Birth

Age Difference

Person 1 DOB

Person 2 DOB

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🇮🇳 IST

🇺🇸 EST

🇬🇧 GMT

🇦🇪 Dubai

Days Between Dates

Start

End

Statistics Calculator

Enter Numbers (comma or space separated)

Number System Converter

Input Value

From Base

Tip & Bill Split

Bill Amount (₹)

Tip (%)

Split Between (people)

Currency Converter

Amount

From

Popular Rates (1 USD)

→ INR

—

→ EUR

—

→ GBP

—

→ JPY

—

→ AED

—

→ CAD

—

📚 Math & Finance Formulas

Finance

EMI

EMI = P x r x (1+r)^n / ((1+r)^n - 1)

P=Principal, r=monthly rate, n=months

Compound Interest

A = P(1 + r/n)^(nt)

P=Principal, r=annual rate, n=times/year, t=years

Simple Interest

SI = (P x R x T) / 100

P=Principal, R=Rate%, T=Time in years

SIP Returns

M = P x [(1+r)^n - 1] / r x (1+r)

P=monthly investment, r=monthly rate, n=months

ROI

ROI = ((Final - Initial) / Initial) x 100

Percentage

% = (Part / Whole) x 100

% Change

% Change = ((New - Old) / Old) x 100

Positive=increase, Negative=decrease

Profit %

Profit% = ((SP - CP) / CP) x 100

SP=Selling Price, CP=Cost Price

GST (Exclusive)

Total = Amount x (1 + GST%/100)

Geometry

Circle Area

A = pi x r^2

Triangle Area

A = (1/2) x base x height

Cylinder Volume

V = pi x r^2 x h

Pythagorean Theorem

c^2 = a^2 + b^2

c=hypotenuse of right triangle

Health

BMI

BMI = Weight(kg) / Height(m)^2

Normal: 18.5 - 24.9

BMR (Mifflin-St Jeor)

Male: 10W + 6.25H - 5A + 5 | Female: 10W + 6.25H - 5A - 161

W=weight kg, H=height cm, A=age years

CTC to In-Hand Salary

Annual CTC (₹)

Basic Salary (%)

HRA (% of basic)

City

Special Allowance (₹/mo)

Other Deductions (₹/mo)

NPS Calculator (National Pension Scheme)

Monthly Contribution (₹)

Current Age

Retirement Age

Expected Return (%/yr)

Annuity % (min 40%)

Annuity Rate (%/yr)

Rent vs Buy Calculator

Property Price (₹)

Down Payment (₹)

Home Loan Rate (%)

Loan Tenure (years)

Monthly Rent (₹)

Rent Increase (%/yr)

Property Appreciation (%/yr)

Investment Return (%/yr)

Invoice Generator

Your Name / Business

Client Name

Invoice No.

Date

Items

GST Rate (%)

Discount (%)

Calculation History

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No calculations yet

Currency: ECB/open.er-api.com · All results are indicative

Frequently Asked Questions

• Is CalcPro free to use?

Yes, CalcPro is completely free for everyone.

• Can I use CalcPro on mobile devices?

Yes, CalcPro works smoothly on phones, tablets and desktops.

• Does CalcPro support scientific calculations?

Yes, CalcPro includes scientific and advanced calculator tools.

• Can I calculate EMI using CalcPro?

Yes, CalcPro includes EMI and finance calculators.

• Does CalcPro include GST calculation?

Yes, GST calculator tools are available.

• Does CalcPro support BMI and age calculation?

Yes, BMI and age calculators are included.

• Is CalcPro safe to use?

Yes, CalcPro does not require login or personal information.

• Do I need to create an account?

No, you can use all calculator tools without signup.

• Is CalcPro fast and mobile friendly?

Yes, the website is optimized for fast performance on all devices.