Simple tools that just work.
Calculators and file tools you actually need — fast, free, and private. Your files never leave your browser.
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💰 Finance Calculators
Plan loans, savings, taxes and pricing in seconds.
Loan Calculator
Monthly payment, total interest and full amortization schedule.
Compound Interest
See how your savings grow with regular contributions.
Income Tax (Gross→Net)
Estimate take-home pay from your gross salary.
VAT Calculator
Add or remove VAT/sales tax at any rate.
Currency Converter
Convert between currencies using rates you set.
Tip & Bill Splitter
Work out the tip and split the bill fairly.
Discount Calculator
Sale price and savings from any percentage off.
Savings Goal
Monthly amount to reach your target on time.
Salary Calculator
Convert between hourly, monthly and yearly pay.
ROI Calculator
Return on investment, profit and annualized ROI.
Break-Even Calculator
How many units cover your costs?
Freelance Rate
Hourly rate for your income goal.
Inflation Calculator
Buying power and money's value over the years.
Markup & Margin
Profit, markup and margin side by side.
Net to Gross
From target net to the gross needed.
❤️ Health & Fitness
BMI, calories, ideal weight and more — estimates only, not medical advice.
BMI Calculator
Body Mass Index from your height and weight.
Calorie Calculator
Daily calorie needs (BMR & TDEE).
Ideal Weight
Healthy weight range for your height.
Water Intake
How much water to drink each day.
Due Date
Estimated due date from your last period.
Body Fat
Estimate body fat percentage with the U.S. Navy method.
Heart Rate Zones
Max heart rate and five training zones.
Sleep Calculator
Best bedtimes and wake-up times by sleep cycle.
Steps to km
Turn step count into distance and calories.
Macro Calculator
Split calories into protein, carbs and fat.
Running Pace
Pace per km/mile and average speed.
One-Rep Max (1RM)
Estimate max strength from one set.
BMR Calculator
Calories burned at rest (Mifflin-St Jeor).
Waist-to-Height
Risk indicator from waist and height.
Calories Burned
Calories burned per activity (MET).
🧮 Math & Everyday
Percentages, proportions, averages and quick everyday maths.
Percentage Calculator
Percent of, what percent, and percentage change.
Rule of Three
Solve a proportion: A to B as C to X.
Average
Mean, median, sum and more.
Random Number
Pick a random whole number in a range.
Grade Average
Average your grades, with optional weights.
Fraction Calculator
Add, subtract, multiply and divide fractions.
GCD & LCM
Greatest common divisor and least common multiple.
Power & Root
Calculate powers and nth roots.
Installment Calculator
Split a price into equal interest-free payments.
Tip Per Person
Add a tip and split the bill fairly per person.
Number Base Converter
Convert binary, octal, decimal and hexadecimal.
Prime Checker
Check primes incl. prime factorization.
Quadratic Equation
Solve ax²+bx+c=0 — real or complex.
Combinations & Perm.
Choose or arrange k out of n.
Scientific Notation
Numbers as powers of ten and back.
Ratio Calculator
Simplify a ratio and split an amount.
📅 Date & Time
Work out age, days between dates and hours worked.
Age Calculator
Exact age in years, months and days.
Date Difference
Days and weeks between two dates.
Hours Calculator
Time between start and end, minus a break.
Week Number (ISO)
ISO 8601 week number for any date.
Countdown Calculator
Live countdown to any date.
Unix Timestamp
Timestamp to readable date (UTC/local).
Add/Subtract Days
Shift a date by days, weeks or months.
Business Days
Working days between two dates.
Time Duration
Add or subtract hours and minutes.
🔄 Converters
Convert length, weight, temperature and speed.
Length Converter
mm, cm, m, km, inch, foot, mile.
Weight Converter
g, kg, t, oz, lb, stone.
Temperature Converter
Celsius, Fahrenheit, Kelvin.
Speed Converter
km/h, mph, m/s, knots.
Area Converter
m², hectares, acres, square feet and more.
Volume Converter
litres, ml, gallons, cups and more.
Data Size
bytes, KB, MB, GB and binary KiB/MiB/GiB.
Time Converter
seconds, minutes, hours, days, weeks.
Pressure Converter
Pa, kPa, bar, psi, atm, mmHg.
Energy Converter
Convert joule, calorie, kWh and BTU.
Angle Converter
Degrees, radians, gradians and turns.
Data Rate Converter
Convert bps, Mbps, Gbps and MB/s.
Fuel Economy
L/100 km, mpg and km/L.
Frequency
Hz, kHz, MHz and GHz.
Torque
Nm, kgf.m and lb.ft.
🔳 QR & Codes
Generate QR codes and barcodes — no signup, all in your browser.
QR Code Generator
Turn a link or text into a QR code — as PNG or SVG.
WiFi QR Code
Guests join your WiFi by scanning the code.
vCard QR Code
Share and save contact details with one scan.
Barcode Generator
Code 128 barcode from numbers or text.
Email QR Code
QR code that opens a ready email.
SMS QR Code
QR code that opens a prepared text.
URL QR Code
Turn any web link into a QR code.
Text QR Code
Any text as a scannable QR code.
Location QR Code
Coordinates as a QR that opens in maps.
📄 PDF & File Tools
Edit PDFs and images privately — nothing is uploaded.
Merge PDF
Combine multiple PDFs into one file, in any order.
Split PDF
Extract pages or split a PDF into separate files.
Rotate PDF
Rotate pages by 90°, 180° or 270° and save.
Compress PDF
Shrink large PDFs to share them easily.
Image to PDF
Turn JPG & PNG images into a single PDF.
Compress Image
Shrink JPG & PNG files with no visible quality loss.
PDF to JPG
Save each PDF page as a JPG or PNG image.
Extract Text
Pull text out of a PDF to copy or save.
Delete Pages
Remove unwanted pages from a PDF.
Extract Pages
Save selected pages as a new PDF.
Organize PDF
Reorder and rearrange pages.
Page Numbers
Add page numbers in any position.
Watermark PDF
Stamp a text watermark across every page.
Edit Metadata
Change title, author, subject and keywords.
Add Blank Pages
Insert empty pages anywhere in a PDF.
N-up (Pages per Sheet)
Put 2 or 4 pages on one sheet to save paper.
Reverse PDF
Flip a PDF page order back to front.
Unlock PDF
Remove a known password from a PDF.
Resize PDF to A4
Scale every page to a uniform A4.
Why QuickToolz?
QuickToolz is a growing collection of free online tools built around one idea: the best utilities are the ones that load instantly, do exactly what you need, and respect your privacy. There are no accounts to create, no downloads to install, and no limits hidden behind a paywall.
Every file tool on QuickToolz runs entirely inside your web browser. When you merge a PDF or convert an image, the work happens on your own device — your documents are never uploaded to a server. That makes QuickToolz faster than upload-based services and far safer for sensitive files like contracts, invoices and bank statements.
Our calculators are designed to be transparent. Instead of just spitting out a number, each one explains the formula it uses and what the result means, so you can trust the math and learn something along the way.