fox tools
EVERYDAY TOOLS · ON DEVICE
Foxvion Online Tools
Fox Tools by Foxvion: everyday calculations, character counting, unit conversions and image editing. Find the tool you need and work directly in your browser.
Popular tools
Character counter
Count characters with and without spaces, words, sentences and lines.
Percentage calculator
Find percentages, percentage change and the difference between two values.
BMI calculator
Calculate adult body mass index using metric or US customary units.
Age calculator
Calculate your exact age and the days until your next birthday.
Image editor
Resize images, convert JFIF, JPG, PNG and WebP, and reduce file sizes.
All tools
Photo studio
Draw on photos, add text and shapes, and combine images in your browser.
Percentage calculator
Find percentages, percentage change and the difference between two values.
Discount calculator
See the sale price and how much you save before you buy.
Date calculator
Count days between dates, or add and subtract days from a date.
Days until calculator (D-Day)
Calculate days until a birthday, holiday or event, or count days since a past date.
Age calculator
Calculate your exact age and the days until your next birthday.
Unit converter
Convert cm to inches, kg to lb, Celsius to Fahrenheit, and other length, volume and data units.
Character counter
Count characters with and without spaces, words, sentences and lines.
BMI calculator
Calculate adult body mass index using metric or US customary units.
Image editor
Resize images, convert JFIF, JPG, PNG and WebP, and reduce file sizes.
Image format converters
Practical guides
All guidesMeet an image upload limit: 900 × 900 pixels and under 500 KB
Choose between cropping and padding, pick a file format, and check the actual dimensions and file size before submitting your image.
Annotate a photo: text, arrows and image overlays that stay readable
Build a clear visual explanation with layers, contrast and cropping. Practise with sample images and choose the right export format.
Three percentage traps: stacked discounts, recovery and percentage points
Work through successive discounts, the increase needed to recover a loss, and the difference between percentage points and relative change.