Get it done without the friction.

Different ticket counts

Weighted raffle picker

Add names and ticket counts when some people should have more chances. Every ticket gets a fair shot.

Open weighted raffle One entry each

Equal-chance raffle picker

Paste a list of names when everyone should have the same chance. Every row counts once.

Open equal-chance raffle Fair groups in seconds

Random team generator

Paste names, choose a team count, and create random or skill-balanced teams instantly.

Generate teams Free and printable

Round-robin schedule generator

Create every matchup, organize rounds and courts, then copy or print the complete schedule.

Build a schedule Fix copied PDF text

PDF text cleaner

Repair broken line breaks, hyphenated words, and messy spacing without uploading your text.

Clean PDF text Calculator and live timer

Meeting cost calculator

Estimate a planned meeting or start the live timer and watch the cost update as time passes.

Calculate meeting cost Hours, breaks, and overtime

Time card calculator

Add weekly or biweekly shifts, subtract breaks, and see regular, overtime, and pay estimates.

Calculate work hours Fresh partners every round

No-repeat pair generator

Create several rounds of pairs without matching the same two people twice.

Generate pairs Math

Percentage calculator

Solve four common percentage questions and learn the formula for each one.

Calculate percentages Math

Fraction calculator

Calculate and simplify fraction addition, subtraction, multiplication, or division.

Calculate fractions Math

Average calculator

Find the mean, sum, and count for a list of numbers.

Calculate an average Math

Ratio calculator

Reduce ratios or solve an equivalent proportion with a missing value.

Calculate ratios Math

Square root calculator

Find a principal square root and learn how to check the result.

Calculate a square root Math

Exponent calculator

Raise a base to a power and review positive, negative, and zero exponent rules.

Calculate a power Math

GCF and LCM calculator

Find the greatest common factor and least common multiple of integers.

Find GCF and LCM Math

Quadratic formula

Solve a quadratic equation and interpret its discriminant and roots.

Solve a quadratic Math

Slope calculator

Find rise, run, and slope between two coordinate points.

Calculate slope Math

Standard deviation

Calculate population or sample standard deviation, variance, and mean.

Calculate standard deviation