All the tools
you need. All in one place.
PDFs, images, calculations and conversions. Choose what you want to do.
Simple, fast and free. No registration needed.
For example: Online calculator, Online timer, Days between dates…
Featured tools
Eight starting points to calculate, convert and create.
Online calculator
Calculate with percentages, decimals and parentheses.
Scientific calculator
Calculate powers, roots, logarithms and trigonometric functions.
Online timer
Online countdown timer with pause, resume and an optional sound.
Days between dates
Calculate calendar days between two dates, with an inclusive end-date option.
Merge PDF
Merge 2–20 PDFs in selection order, up to 100 pages total. Form values are preserved with distinct names per document.
Compress JPG
Reduce JPG size with quality from 10 to 95. Compression loses detail; if the result is not smaller, the original file is returned.
Unit converter
Convert 11 quantities: length, mass, volume, temperature, duration, speed, area, pressure, energy, power and data. Distinguishes decimal and binary prefixes.
Password generator
Generate random passwords with a custom length and character groups.
Your toolkit, category by category
Find a function for your next task. Each page includes instructions, examples and limitations.
Calculators
Numbers, percentages and everyday calculations.
Weighted average and ECTS
Calculate an Italian university grade average weighted by ECTS credits.
Italian graduation grade simulator
Estimate an Italian graduation grade from average, thesis points and bonuses.
Fraction calculator
Add, subtract, multiply and divide fractions with an exact simplified result.
Proportions and rule of three
Solve direct and inverse proportions using the rule of three.
VAT calculator
Add VAT to a net amount using a rate of your choice.
Remove VAT
Extract VAT from a gross total to find the net amount and tax.
Compound interest and savings plan
Simulate compound interest with monthly contributions and an annual breakdown.
Circle area
Circle area: formula A = π × r², custom inputs and copyable results. Free calculation in your browser.
Converters
From one format to another, effortlessly.
Unix timestamp converter
Convert Unix timestamps to UTC dates and back, in seconds or milliseconds.
Degrees and radians
Degrees and radians: formula rad = ° × π ÷ 180, custom inputs and copyable results. Free calculation in your browser.
kW to horsepower
Convert kW, metric horsepower CV/PS and mechanical horsepower hp. CV and hp are different units; select the correct one for vehicle data.
Miles to kilometers
Convert international miles and kilometers in both directions. One mile is exactly 1.609344 km; these are not nautical miles.
Celsius and Fahrenheit
Convert Celsius and Fahrenheit with a kelvin value. Absolute zero is −273.15 °C or −459.67 °F; lower temperatures are rejected.
Liters and gallons
Convert liters and gallons choosing the US liquid or UK imperial gallon. They differ: 3.785411784 L versus 4.54609 L.
Trim video online
Trim a precise video interval and download H.264/AAC MP4. Start and end in seconds; re-encoding may lose quality. Files up to 50 MB and 3 minutes.
Video to GIF
Create an animated GIF from a 0.1–15 second interval. 480 px wide, 12 fps, no audio. GIFs can be larger than the original video.
Generators
Small tools, new possibilities.
PDF tools
Tools to organize and convert PDF documents.
Split PDF
Split a PDF into one-page documents in a ZIP archive. Use all for every page or a range such as 1-3,5.
Extract PDF pages
Create a PDF containing only selected pages. Example: 3,1-2 preserves that order; duplicate selections are removed.
Delete PDF pages
Delete selected pages while retaining the original order of the others. At least one page must remain.
Rotate PDF
Rotate selected pages clockwise by 90, 180 or 270 degrees, in addition to any existing rotation.
Crop PDF
Crop PDF margins in millimetres relative to the unrotated page. Changes the visible area; hidden content is not deleted.
Compress PDF
Optimize a PDF losslessly by compressing streams and deduplicating objects. Returns the original if not smaller; does not resample images.
JPG and PNG to PDF
Turn up to 20 JPG, PNG or WebP images into PDF pages in selection order. Corrects EXIF orientation and uses white behind transparency.
PDF to JPG and PNG
Convert PDF pages to JPG or PNG at 72–200 DPI. One page produces an image; multiple pages produce a ZIP archive.
Images
Resize, crop and convert your images.
Remove image background
Remove backgrounds with U²-Net running locally on the server, without external services. Transparent PNG output; up to 8 megapixels. Check subject edges and details.
Enhance image quality
Enhance images with local FSRCNN AI at 2×/4× (8 MP output) or classic contrast and sharpness. May introduce artifacts; cannot reliably recover lost details.
Resize images
Resize JPG, PNG and WebP. With aspect ratio enabled, the image fits inside the maximum dimensions; disable it for exact dimensions. Up to 25 megapixels.
Crop images
Crop JPG, PNG and WebP using an origin at the top-left corner and dimensions in pixels. The crop box must remain entirely inside the image.
HEIC to JPG
Convert the main image of a HEIC or HEIF file to JPG, correcting EXIF orientation. Collections and animated sequences are not supported.
PNG to JPG
Convert PNG to JPG with white behind transparent areas. JPEG uses lossy compression and does not preserve transparency.
JPG to PNG
Convert JPG to PNG without further lossy compression. Does not recover detail already lost in JPEG; the file may become larger.
WebP to PNG and JPG
Convert static WebP to PNG or JPG. PNG preserves transparency; JPG uses a white background. Animations are not supported.
More
More utilities to simplify your day.
Online stopwatch
Measure time with pause, resume and lap times.
Working days and holidays
Count working days with Italian or custom holidays and optional working Saturdays.
Add hours and minutes
Add and subtract durations in hours and minutes, with decimal-hour totals.
Work hours and breaks
Calculate worked hours from intervals, overnight shifts and additional breaks.
JWT decoder
Read a JWT’s JSON header and payload locally without sending the token elsewhere.
JSON formatter
Format or minify JSON while preserving numbers and duplicate keys. Browser processing: 1 million input characters, 100 nesting levels, 4 million output characters.
JSON validator
Validate JSON syntax and locate errors by line and column. Does not validate JSON Schema and allows duplicate keys. Up to 1 million characters and 100 levels.
Base64 converter
Encode and decode UTF-8 text with standard Base64 or Base64url. Text up to 200,000 characters; Base64 strings up to 1 million. Binary files not supported.
From search to result
Task paths and resources- 1
Choose a tool
Search by name, explore the categories or follow the task paths in Resources.
- 2
Enter data or select files
Each tool explains formats, settings and limitations before you start.
- 3
Get your result
View the calculation or download the processed file. No registration required.
Browser or server: know where processing happens
Calculators and utilities process values in your browser. File tools upload documents to the server for temporary processing. Each tool page explains how processing works; see the privacy notice for details.
How we handle dataFrequently asked questions
Do I need an account?
No. You can use the published tools without registering.
Are the tools free?
Yes. The catalog tools are free; processing limits are shown on each tool page.
Can I use them on my phone?
Yes, in a browser on your phone, tablet or computer. For files, check the formats and sizes accepted by the tool.
How do I find the right function?
Use search or the categories. Resources also offers paths for tasks such as organizing PDFs, converting images and calculating dates.