Useful tools, without the noise.
Calculators, converters, and everyday utilities that get you a result fast — no sign-up, no clutter.
Browse by category
The tool catalogue is being built out category by category. Every category below already has a home — tools are added as they're built.
Calculators
Math, percentage, and finance calculators.
Converters
Convert between units, currencies, and formats.
Date & Time
Age, duration, and date arithmetic.
File Tools
Inspect, convert, and process files.
Image Tools
Resize, compress, crop, and convert images.
PDF Tools
Merge, split, compress, and convert PDFs.
Text Tools
Word count, case conversion, and text comparison.
Developer Tools
JSON, Base64, UUID, and timestamp utilities.
Data Tools
Lookups backed by authoritative datasets.
Fun & Discovery
Playful tools that combine data and calculation.
Popular tools
Kilograms to Pounds Converter (kg to lb)
Convert Kilograms to Pounds instantly, with the exact formula and a quick-reference table.
Centimetres to Inches Converter (cm to in)
Convert Centimetres to Inches instantly, with the exact formula and a quick-reference table.
Celsius to Fahrenheit Converter (°C to °F)
Convert Celsius to Fahrenheit instantly, with the exact formula and a quick-reference table.
Litres to US Gallons Converter (L to gal (US))
Convert Litres to US Gallons instantly, with the exact formula and a quick-reference table.
Kilometres per Hour to Miles per Hour Converter (km/h to mph)
Convert Kilometres per Hour to Miles per Hour instantly, with the exact formula and a quick-reference table.
Percentage Calculator
Find what a given percentage of a number is.
Average Calculator
Find the mean, sum, and count of a list of numbers.
Discount Calculator
Work out the final price after a percentage discount.
Compound Interest Calculator
Calculate interest that compounds over time.
Recently added
This section will highlight newly launched tools as new categories ship.