Sudoku is a popular, logic-based, combinatorial number-placement puzzle.
Gross Pay Calculator is a simple online utility that helps you calculate total gross pay before taxes or deductions, based on hours worked at standard, overtime, and double time rates.
Tip Calculator is a simple online utility that helps you calculate the tip on any bill and split the total between multiple people.
Sales Tax Calculator is a simple online utility that helps you calculate sales tax on purchases or determine the pre-tax price from a total amount.
Interactive Scrum Poker card selector for agile story point estimation.
Count words, characters, sentences, and paragraphs in your text instantly.
Flip a virtual coin instantly and track heads or tails statistics across multiple flips.
Count characters, words, lines, and bytes in your text instantly. Set a character limit to track remaining or exceeded characters.
Browse organic compound classes with their functional groups, formulas, and uses.
A scientific notation converter instantly converts any number to scientific notation, E notation, engineering notation, and decimal form.
A percentage calculator lets you solve the three most common percentage problems instantly.
A standard deviation calculator computes how spread out values are from the mean in a dataset.