FreeBoxTool
40+ free online tools. Fast, free, no signup required.
Categories
QR Code
Generate, decode, bulk, customize
Unit Converters
Length, weight, temperature, data, speed, area, volume
Calculators
BMI, loan, compound interest, percentage, date, tip
Image Tools
Compress, resize, crop, convert, rotate
Text Tools
Word count, case, sort, diff, markdown
Color Tools
Convert, palette, contrast, gradient
Time & Timezone
World clock, convert, meeting planner
All Tools
Length Converter
Meters, kilometers, miles, feet, inches
Weight Converter
Kilograms, pounds, ounces, stones
Temperature Converter
Celsius, Fahrenheit, Kelvin
Data Size Converter
Bytes, KB, MB, GB, TB, PB
Speed Converter
m/s, km/h, mph, knots
Area Converter
Square meters, acres, hectares
Volume Converter
Liters, gallons, cups, fluid ounces
BMI Calculator
Body mass index — metric and imperial
Loan Calculator
Monthly payments and amortization
Compound Interest
Investment growth over time
Percentage Calculator
Percentages, ratios, percentage change
Date Difference
Days, weeks, months between dates
Tip Calculator
Tip amount and bill split
Age Calculator
Exact age and next birthday
Discount Calculator
Sale price and savings
Image Compressor
Reduce JPEG, PNG, WEBP file sizes
Image Resize
Resize to any dimensions
Image Crop
Crop with free or locked ratios
Format Converter
Convert between PNG, JPEG, WEBP
Rotate & Flip
Rotate 90°, 180°, 270° or flip
Word Count
Words, characters, reading time
Case Converter
UPPER, lower, Title, camelCase
Remove Duplicates
Remove duplicate lines
Sort Lines
Sort alphabetically, by length
Find & Replace
Find and replace with regex
Markdown Preview
Live markdown editor and preview
Text Diff
Compare two texts, highlight differences
Lorem Ipsum
Generate placeholder text
QR Generator
URLs, text, WiFi, email, vCard
QR Decoder
Upload image to read QR code
Bulk QR
Generate multiple QR codes at once
Custom QR
QR codes with custom colors
Color Converter
HEX, RGB, HSL, CMYK conversion
Palette Generator
Complementary, triadic, analogous
Contrast Checker
WCAG AA/AAA accessibility check
Gradient Generator
CSS linear and radial gradients
Image Color Picker
Pick colors from any image
World Clock
Current time in cities worldwide
Time Converter
Convert between any two timezones
Meeting Planner
Best meeting time across timezones
Countdown Timer
Countdown to any date and time
Frequently Asked Questions
Are these tools completely free?
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Yes, all 40+ tools on FreeBoxTool are completely free to use. No account, subscription, or payment is required.
Do you store my files or data?
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No. Image tools process files entirely in your browser using JavaScript — nothing is uploaded to any server. Text and calculation tools also run locally in your browser.
Can I use FreeBoxTool on mobile?
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Yes, FreeBoxTool is fully responsive and works on smartphones, tablets, and desktop computers.
How accurate are the unit conversions?
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All conversions use industry-standard factors with up to 10 significant figures of precision to minimize floating-point errors.
What image formats are supported?
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The image tools support JPEG, PNG, and WEBP formats for input. Output format can be selected per tool.
Are the QR codes I generate private?
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Yes. QR codes are generated entirely in your browser. The content you encode is never sent to any server.
How many tools are available?
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FreeBoxTool currently offers 40+ tools across 7 categories: unit converters, calculators, image tools, text tools, QR code tools, color tools, and time/timezone tools.