Free Online Tools
Free general tools including tip calculator, Morse code translator, binary converter and pool volume calculator. Instant results, no signup needed.
Some calculations don't fit neatly into one category — but they come up constantly. Splitting a restaurant bill, converting between number systems, figuring out how much water your pool holds, or decoding a Morse code message. These tools handle the everyday problems that don't need a specialist, just a fast and accurate answer.
What these tools cover
The tip calculator splits any bill among any number of people, letting you set a custom tip percentage and see exactly what each person owes. The Morse code translator converts text to Morse and Morse to text in real time — useful for learning, ham radio operators, or curiosity. The binary to decimal converter handles conversion in both directions and also shows the hexadecimal equivalent, making it useful for programmers and electronics hobbyists. The pool volume calculator estimates gallons and litres for rectangular, circular, oval, and L-shaped pools — essential for getting chemical dosing right.
Suggesting a tool
This is the category we expand most often, because "general" covers a huge range of real-world needs. If you keep wishing a particular calculator existed online without all the clutter, there's a good chance we'll build it.
Send us your idea and we'll consider it for a future update.