%Percentage Calculator

Three modes: find percentage of a number, find what percent a value is, and calculate percentage change.

What is X% of a number?
Result: 30
What % is X of Y?
Result: 20%
Percentage Change from A to B
Result: +50.00% (Increase)

Date & Time Difference Calculator

Calculate exact duration, total days, hours, and business workdays between two dates or timestamps.

Select dates above to calculate difference

Loan & EMI Calculator

Calculate monthly EMI, total interest payable, and final loan repayment amount.

Monthly EMI: $966.60 | Total Interest: $7,996.00

Discount & Sale Price Calculator

Calculate final price after discount percentage and exact savings.

Final Price: $90.00 (You save $30.00)

Average, Median & Statistics

Calculate Mean, Median, Mode, Min, Max, Range, and Sum from a list of numbers.

Count: 5 | Mean: 30 | Median: 30 | Min: 10 | Max: 50 | Sum: 150

Prime Number Checker & Factorizer

Test if a number is prime and list all prime factors.

360 is NOT prime. Prime factors: 2 x 2 x 2 x 3 x 3 x 5

GCD & LCM Calculator

Calculate Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of two or more numbers.

GCD: 12 | LCM: 72

Body Mass Index (BMI) Calculator

Calculate BMI score and category (Underweight, Normal, Overweight, Obese).

BMI: 22.9 (Normal Weight)

Number Base Converter

Convert numbers instantly between Decimal, Hexadecimal, Binary, and Octal bases.

Random Number Generator

Generate truly random numbers or sequences within a custom range.

Unit Converter

Convert length, weight, temperature, area, speed, and digital data storage units.

Roman Numeral Converter

Convert integers to Roman Numerals (e.g. 2026 → MMXXVI) and vice-versa.

MMXXVI

QR Code Generator

Generate custom QR code for URLs, Wi-Fi credentials, or text. Download as image.

Color Picker & Converter

Convert colors between HEX, RGB, and HSL formats with real-time preview.

#8b5cf6
rgb(139, 92, 246)
hsl(258, 90%, 66%)

CSS Box Shadow Generator

Visually design smooth CSS glassmorphism box shadows.

box-shadow: 0px 16px 48px 0px rgba(139, 92, 246, 0.4);

Unix Timestamp Converter

Convert Unix Epoch timestamp to human-readable date and time, or get current Epoch timestamp.

0
Current Unix Timestamp (seconds)

User-Agent & Client Device Inspector

Real-time inspection of your client browser's specs, screen dimensions, CPU cores, RAM, and WebGL GPU info.

Tip & Bill Splitter Calculator

Calculate total tip amount and split the bill evenly among multiple people.

$15.00
Total Tip
$115.00
Total Bill
$57.50
Amount Per Person
$7.50
Tip Per Person

Speed, Distance & Time Calculator

Solve for any variable in the speed equation (Speed = Distance / Time).

Speed: 60.00 units/hour

Area Calculator

Calculate surface area for geometric shapes: rectangle, circle, triangle, and trapezoid.

Area: 0

Age Calculator

Calculate your exact age in years, months, days, hours, and minutes from your birth date.

Fuel Efficiency Calculator

Convert and calculate fuel economy between MPG (US), MPG (UK), L/100km, and km/L.

8.00
L / 100km
12.50
km / Liter
29.40
MPG (US)
35.31
MPG (UK)

Mathematical Calculators & Unit Conversion Guide

Accurate mathematical calculations, unit conversions, and financial metrics are essential for students, engineers, financial planners, and researchers. Our suite offers instant, precision calculations with 100% privacy and zero server latency.

Percentage & Financial Calculators

Calculate percentage increases, percentage differences, discounts, and loan Equated Monthly Installments (EMI) with automated amortization schedules.

Multi-Unit Conversion

Convert physical dimensions across metric and imperial systems: Length, Mass, Volume, Temperature, Digital Data, and Speed units.

Number Bases & Primes

Convert numbers between Binary, Octal, Decimal, and Hexadecimal, evaluate primality, compute Greatest Common Divisor (GCD), and Least Common Multiple (LCM).

Frequently Asked Questions (FAQ)

Q: How accurate are the financial loan EMI calculations?

Our EMI calculator uses the standard banking compounding formula: P x r x (1 + r)^n / ((1 + r)^n - 1), providing exact monthly principal and interest breakdowns.

Q: Are calculations processed offline?

Yes, all mathematical formulas execute instantly inside your browser using standard JavaScript floating-point arithmetic.