Is the calculator completely free to use?

Yes! All 16 calculators are 100% free forever. No account, no credit card, no hidden charges. Unlimited usage.

Can I export my calculation history?

Yes! Click Export CSV to download all calculations as a spreadsheet-compatible file for Excel or Google Sheets.

🚀 Free & Unlimited · No Sign-up Required · 2025 Edition

The Ultimate All-in-One
Calculator Suite

16 professional calculators engineered for speed, privacy, and precision. From simple math to complex financial modeling — all running locally in your browser. No ads, no tracking, no limits.

🔒 100% Local Processing ⚡ Instant Results 📋 Full History + CSV Export 📱 Fully Responsive 🌐 Works Offline

simple.calc

BASIC

Value

Percentage %

Result

15% of 200 = 30.00

200 + 15% = 230.00 · 200 − 15% = 170.00

Original Price

Discount %

You Save200.00

Final Price800.00

Savings Rate20%

Base Amount

Tax Rate %

Mode

Tax Amount180.00

Total1180.00

Loan Amount

Annual Rate %

Tenure (months)

Monthly EMI—

Total Payment—

Total Interest—

Amount

From

Converted Amount

92.00 EUR

1 USD = 0.9200 EUR · Live indicative rate

Bill Amount

Tip %

Split Between (people)

Tip Amount—

Total Bill—

Per Person—

Weight (kg)

Height (cm)

Your BMI

22.9

Normal weight

Date of Birth

Calculate Age At (default: today)

Age—

In Months—

In Days—

Next Birthday—

Start Date

End Date

Total Days365

Weeks52.1

Months (approx.)12

Working Days—

Distance

Unit

Time (hours)

Speed—

In km/h—

In mph—

In m/s—

Engineered for
Excellence

🧠

16 Professional Tools

Scientific, Financial, Health & Converters. Every calculator you need in one unified suite.

🔒

Zero Data Collection

All processing happens locally. No server uploads, no tracking, no cookies. Your data stays private forever.

⚡

Ultra-Fast Performance

Optimized JavaScript engine delivers results in milliseconds. No waiting, no loading spinners.

📋

History & CSV Export

Full calculation history stored locally. One-click CSV export for Excel, Google Sheets, and data analysis.

📱

Mobile-First Design

Touch-optimized interface with responsive layout. Perfect experience on iPhone, Android, iPad, and Desktop.

🌐

Offline Ready PWA

Fully functional without internet after first visit. Works anywhere, anytime — even on airplanes and remote areas.

Frequently Asked Questions

Got Questions?

Is this calculator suite completely free to use?

Yes! All 16 calculators are 100% free forever. No account creation, no credit card, no hidden fees. Use them unlimited times for personal or professional purposes.

Is my calculation data private and secure?

100% private. All computations run directly in your browser using client-side JavaScript. Zero data is ever sent to any server. Your history is stored only in your device's local storage.

Can I use these calculators offline without internet?

Absolutely! After the initial page load, all 16 calculators work completely offline. Perfect for travel, remote locations, or areas with limited connectivity. No internet required.

How many different calculators are included?

16 professional tools: Simple, Scientific, Percentage, Discount, GST Tax, EMI Loan, Currency Converter, Tip Split, BMI, Age, Date Difference, Speed, Unit Converter, Data Size, and Color Converter.

Does it work on mobile phones and tablets?

Yes! The calculator suite is fully responsive with touch-friendly buttons. It adapts perfectly to any screen size: iPhone, Android phones, iPad, tablets, laptops, and desktop computers.

Live Dashboard

Active ToolSimple

Last Result—

Session Calculations0

History

No calculations yet

Privacy Stats

Total Calculations0

Saved in History0

ProcessingLocal Browser ✓

Data Sent to Server0 bytes

Engineered forExcellence

Got Questions?

Engineered for
Excellence