Utility Calculators
QR codes, password strength, colour converters and unit helpers — small tools that run in the browser and never upload your input.
Small tools that answer small questions fast — password entropy, QR codes, color conversions, unit helpers. Each one runs client-side, states exactly what it does and does not do, and never sends your input anywhere.
QR Code Generator
Generate QR codes for any text or URL
Password Generator
Generate strong passwords
Color Converter
Convert between HEX, RGB, HSL
Universal Unit Converter
Convert between any units
Number Base Converter
Convert between binary, decimal, hex
Hash Generator
Generate SHA-256 hash
Lorem Ipsum Generator
Generate placeholder text
UUID Generator
Generate UUID v4
Bill Split & Tip
Split bill and calculate tip
Countdown Timer Calculator
Calculate time until a future event
File Size Converter
Convert file size units (B, KB, MB, GB)
Salary to Hourly Converter
Convert annual salary to hourly rate
Area Calculator
Calculate area of common shapes
Volume Calculator
Calculate volume of 3D shapes
Shipping Cost Calculator
Estimate shipping costs by weight and distance
Biweekly Pay Calculator
Calculate biweekly pay from annual salary
Take-Home Pay Calculator
Gross → net pay after federal, FICA and state tax
Mileage Reimbursement Calculator
Calculate mileage reimbursement at IRS rate
Ratio Simplifier
Simplify and work with ratios
GCD & LCM Calculator
Greatest common divisor and least common multiple
Prime Number Checker
Check if a number is prime and find factors
Rounding Calculator
Round numbers to a specified precision
Coin Flip Simulator
Simulate coin flips with statistics
Dice Roll Simulator
Roll dice and analyze the results
Date Add/Subtract
Add or subtract days from a date
Exact Age Calculator
Exact age in years, months, and days
Price Per Unit Calculator
Compare prices per unit to find the best deal
Random Team Generator
Split names into random teams
Password Entropy Calculator
Strength in bits from length and character pool
Speech Time Calculator
Speaking duration from word count and pace
QR Version Finder
Smallest QR version that fits your byte payload
Unix Timestamp Converter
Epoch seconds to readable UTC date
Formulas, worked examples aur edge cases ke liye: Utilities guides
Frequently asked questions
Is the text I paste into these tools uploaded anywhere?
No. The QR, password and text utilities run entirely in your browser using local JavaScript. That makes them suitable for one-off links, generated passwords and client material — but note that anything you paste into a page can still be captured by browser extensions you have installed.
What makes a password strong — length or complexity?
Length matters more. Every extra character multiplies the number of combinations, while adding a symbol to a short password only widens it slightly. A long passphrase of unrelated words usually beats a short string of substituted characters, and it is easier to remember.
Why might a QR code fail to scan?
Usually too much data in too small a print, or insufficient contrast — scanners need a clear dark-on-light pattern with a quiet margin. Shorter content and a physically larger code are the two most effective fixes; the error-correction level trades capacity for tolerance of smudges or partial coverage.
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