By The Numbers
20+ Free Tools Available
6 Unit Categories
9 Currencies Supported
100% Browser-based & Private
0 Sign-ups Required
Featured Tool

Convert length, weight, temperature, speed, area and digital storage instantly — now with its own dedicated page.

Open Free Unit Converter

What is ToolKit Pro?

ToolKit Pro is a free online tools platform offering 20+ essential calculators, converters, and productivity tools for students, developers, professionals, and everyday users. Whether you need to convert metres to feet, generate a secure QR code, calculate your loan EMI, format a JSON file, or check your BMI — ToolKit Pro delivers instant, accurate results with zero sign-up and no hidden costs.

Every tool runs entirely inside your browser, meaning your data never leaves your device. ToolKit Pro is built for speed, accuracy, and simplicity — no clutter, no unnecessary steps, just results.

  • Unit Converter — Convert length, weight, temperature, speed, area and digital storage across 6 categories with live swap.
  • Currency Converter — Reference rates for 9 major world currencies including USD, EUR, GBP, PKR, AED, INR and more.
  • Scientific Calculator — Full-featured with trigonometry, logarithms, powers, memory functions and DEG/RAD modes.
  • QR Code Generator — Generate scannable QR codes for URLs, text, email addresses, and WiFi networks. Download as PNG.
  • Loan EMI Calculator — Calculate monthly EMI, total interest, and view a full amortization schedule for any loan.
  • BMI Calculator — Body Mass Index with WHO category, animated scale, metric and imperial support.
  • Image Format Converter — Convert PNG, JPG and WebP images entirely in your browser, no upload to any server.
  • JSON Formatter & Validator — Format, validate and minify JSON instantly, with clear error messages.
Simple Process

How It Works

Get results in three simple steps — no downloads, no account needed.

1

Choose a Tool

Browse our collection of 20+ free tools. Pick the one that fits your need — converters, calculators, generators and more.

2

Enter Your Values

Type in your numbers, text or select your options. Results update live as you type — no button clicks needed for most tools.

3

Get Instant Results

Your answer appears immediately. Copy, download or use it right away. All processing happens in your browser — completely private.

4

Always Free

Every tool is completely free. No premium tier, no sign-up, no limits. Just open and use — any time, on any device.

Pick Your Tool

20 precision tools, built for speed and accuracy.

Popular

Unit Converter

Length, weight, temperature, speed, area and data. Live swap with instant results.

6 categoriesSwap ⇄
Finance

Currency Converter

USD, PKR, EUR, GBP and more. Reference rates for 9 major world currencies.

9 currenciesSwap ⇄
Advanced

Scientific Calculator

Full scientific calculator with trigonometry, logarithms, powers and memory functions.

TrigLogsMemory
Generator

QR Code Generator

Generate QR codes for any URL, text, email or WiFi network. Download as PNG.

URLWiFiDownload
Finance

Loan EMI Calculator

Calculate monthly EMI, total interest and full amortization schedule for any loan.

EMIInterestSchedule
Health

BMI Calculator

Get your Body Mass Index, WHO category, and an animated visual scale.

MetricImperialVisual
Personal

Age Calculator

Exact age in years, months and days. Plus total days lived & next birthday.

Exact ageDays lived
Math

Percentage Calculator

Find percentages, percentage change, and what percent one number is of another.

3 modesInstant
Shopping

Discount Calculator

Calculate sale price, amount saved, and effective discount percentage instantly.

Sale priceSavings
Education

GPA Calculator

Add subjects with credit hours and grades to calculate your cumulative GPA.

4.0 scaleMulti-subject
Security

Password Generator

Generate strong, random passwords with custom length and character sets.

Strength meterCopy
Writing

Word Counter

Count words, characters, sentences, paragraphs, and estimate reading time.

WordsCharsRead time
Text

Text Case Converter

Convert text to UPPERCASE, lowercase, Title Case, camelCase and more.

6 formatsCopy
Utility

Random Number Generator

Generate random numbers in any range. Single, multiple, or unique sets.

Custom rangeMultiple
Time

Stopwatch & Timer

Precision stopwatch with lap times, plus a countdown timer with alert.

StopwatchCountdownLaps
New

Image Format Converter

Convert images between PNG, JPG and WebP instantly, right in your browser.

PNGJPGWebP
New

Tip Calculator

Split the bill and calculate tips fast, with per-person amounts.

Bill splitQuick %
New

Date Difference Calculator

Find the exact number of days, weeks, months and years between two dates.

Days betweenInstant
Developer

JSON Formatter & Validator

Format, validate and minify JSON with clear, instant error messages.

FormatMinifyValidate
Design

Color Converter

Convert colors instantly between HEX, RGB and HSL with a live preview.

HEXRGBHSL
Instant ResultsUpdates as you type
100% PrivateAll local, nothing sent
Works EverywhereMobile, tablet & desktop
Always FreeNo account, no limits
FAQs

Frequently Asked Questions

Everything you need to know about ToolKit Pro.

Yes, ToolKit Pro is 100% free. All 20+ tools are available without any subscription, registration, or hidden fees. Simply visit the website and start using any tool immediately.
No account or sign-up is required. There are no forms to fill out, no email addresses to submit, and no passwords to remember. Just open ToolKit Pro and start working immediately.
Absolutely. All calculations, conversions, and tool operations run entirely within your browser. No data is transmitted to any server. Your inputs — whether a loan amount, a password, an image, or personal health data — never leave your device.
Yes. ToolKit Pro is fully responsive and optimized for all screen sizes. It works seamlessly on smartphones, tablets, laptops, and desktop computers across all modern browsers including Chrome, Safari, Firefox, and Edge.
The currency converter uses approximate reference rates for 9 major world currencies. These rates are for informational and educational purposes. For live exchange rates used in actual financial transactions, please consult a licensed financial institution or bank.
The Unit Converter covers 6 categories: Length (millimetres to miles), Weight (milligrams to tonnes), Temperature (Celsius, Fahrenheit, Kelvin), Speed (m/s to Mach), Area (mm² to hectares), and Digital Storage (bits to petabytes). Results update live as you type with a convenient swap button.
Yes. Every QR code you generate can be downloaded as a PNG image file. The QR Code Generator supports four types: URL, plain text, email (with subject and body), and WiFi network credentials. You can also adjust size and error correction level.
Enter your loan amount, annual interest rate, and loan term (months or years). The EMI Calculator instantly computes your monthly EMI payment, total amount payable, and total interest charged. It also provides a complete amortization schedule.
Yes. The Image Format Converter lets you upload a PNG, JPG or WebP image and convert it to another format entirely in your browser, with an adjustable quality setting — no upload to any server.
Yes. ToolKit Pro includes a built-in theme toggle in the navigation bar. Click the moon/sun icon to switch between dark mode and light mode. Your preference is saved for your next visit.