Life Tools
Unit converters, QR code generators, financial and health calculators, date tools, and everyday utilities.
Unit Converters
Data Storage Converter — Bytes, KB, MB, GB, TB, PB
Convert between data storage units: bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes. Supports both binary (1024) and decimal (1000) systems. Understand the difference between OS and manufacturer capacity.
Speed Converter — km/h, mph, m/s, knots, ft/s, Mach
Convert between speed units: kilometers per hour, miles per hour, meters per second, knots, feet per second, and Mach number. Essential for travel, aviation, and physics calculations.
Unit Converter — Length, Weight, Temperature, Volume, Area
Convert between metric and imperial units for length, weight, temperature, volume, and area. Instant, accurate, and easy to use. Supports mm, cm, m, km, in, ft, yd, mi, mg, g, kg, t, oz, lb, °C, °F, K, mL, L, m³, gal, qt, pt, fl oz, mm², cm², m², km², ha, in², ft², ac.
Financial Calculators
Loan Calculator — Calculate Monthly Payment, Interest & Total Cost
Free loan calculator to calculate monthly payments, total interest, and total cost. Supports mortgage, auto loan, and personal loan calculations. Instant results with amortization schedule preview. All calculations run locally in your browser.
Profit Margin Calculator — Calculate Gross & Net Profit Margin
Free profit margin calculator for gross margin and net margin calculations. Calculate profit percentage, markup, and break-even analysis. Essential for business planning and pricing strategy. All calculations run locally in your browser.
Tax Calculator — Calculate VAT, Sales Tax & Income Tax
Free tax calculator for VAT, sales tax, and income tax calculations. Add or remove tax from amounts. Supports multiple tax rates and reverse calculations. Instant results with breakdown. All calculations run locally in your browser.
Health Calculators
Age Calculator — Calculate Exact Age in Years, Months & Days
Free age calculator to calculate your exact age from birth date. Shows age in years, months, days, and total days lived. Calculate age difference between two dates. All calculations run locally in your browser.
BMI Calculator — Calculate Body Mass Index & Health Status
Free BMI calculator to calculate your Body Mass Index. Supports both metric (kg/cm) and imperial (lb/ft-in) units. Instantly shows BMI category and health risk assessment. All calculations run locally in your browser.
Calorie Calculator — Calculate Daily Intake & TDEE
Free calorie calculator to calculate your daily calorie needs and TDEE (Total Daily Energy Expenditure). Based on Mifflin-St Jeor equation. Supports weight loss, gain, and maintenance goals. All calculations run locally in your browser.
Math & Life Calculators
Date Calculator — Calculate Days, Business Days & Countdown
Free date calculator to calculate the difference between two dates. Count total days, business days, and weekends. Create countdown timers for events. All calculations run locally in your browser.
Discount Calculator — Calculate Sale Price & Savings
Free discount calculator to calculate sale prices and savings. Find original price from discounted price. Support for multiple discounts and percentage off. All calculations run locally in your browser.
Fraction Calculator — Add, Subtract, Multiply & Divide Fractions
Free fraction calculator for all fraction operations. Add, subtract, multiply, and divide fractions. Simplify fractions and find common denominators. All calculations run locally in your browser.
Percentage Calculator — Calculate Increase, Decrease & Ratio
Free percentage calculator for all percentage calculations. Calculate percentage increase, decrease, ratio, and change rate. Find what percent one number is of another. All calculations run locally in your browser.
Tip Calculator — Calculate Tips & Split Bills
Free tip calculator to calculate tips and split bills. Support for tip percentage, tax calculation, and bill splitting among multiple people. All calculations run locally in your browser.
Time Management
Time Zone Converter — Convert Time Between Cities
Convert time between different time zones and cities. Find the corresponding time in any city worldwide. Perfect for scheduling meetings across time zones. Supports 30+ time zones including UTC, GMT, EST, CST, PST, CET, JST, and more.
World Clock — Time Zone Converter & Current Time in Multiple Cities
Free world clock and time zone converter. View current time in multiple cities and time zones simultaneously. Features include real-time clock updates, time zone comparison, daylight saving time detection, 12/24 hour format toggle, and quick city search. Perfect for remote teams, international meetings, and global scheduling. All calculations run locally in your browser.
Generators
Barcode Generator — Create Barcodes for Products & Inventory
Free barcode generator to create barcodes for products, inventory, and retail. Supports UPC-A, EAN-13, EAN-8, Code128, Code39, and ITF formats. Download barcodes as PNG images. All generation runs locally in your browser.
QR Code Generator — Create QR Codes for URL, Text, WiFi & vCard
Free QR code generator to create QR codes for URLs, plain text, WiFi credentials, and vCard contacts. Download QR codes in PNG format. No data sent to server — all generation happens in your browser.
Random Number Generator — Generate Numbers in Range
Free random number generator to generate random numbers within a custom range. Support for unique numbers, decimals, and multiple distributions. Perfect for games, sampling, and simulations. All generation runs locally in your browser.