All Tools

Calculate with extremely large numbers beyond normal calculator limits. Handles addition, subtraction, multiplication, division, powers, roots, factorial, GCD, and LCM with arbitrary precision.

Random team generator that splits a list of names into fair, balanced teams — also make pairs, assign roles, build a seating chart, then copy or export.

Lottery number generator with quick-pick presets for Powerball, Mega Millions, EuroMillions and more — set your own range, add a bonus ball, and copy every set.

Spin the wheel to pick a random name, winner or decision. Add your own entries, set custom odds, draw multiple winners and share a wheel.

Dice roller for D4 to D20 and custom-face dice — throw many at once, add modifiers, roll with advantage or disadvantage, and track your roll history.

Random number generator that picks numbers in any range — set no-repeats, odd/even filters, decimals or percentages, and copy or save your results.

Browse public holidays for 199 countries. Filter by holiday type, navigate years from 2024 to 2030, and see the next upcoming holiday at a glance.

Find sunrise, sunset, day length, golden hour, blue hour, and twilight times for any location worldwide, with a 7-day forecast and annual daylight chart.

Calculate your pregnancy due date from your last period, conception date, or known due date, and track your progress and milestones week by week.

See solar and lunar dates side by side with traditional almanac detail: Can Chi, zodiac, solar terms, auspicious hours, and day quality.

Convert dates between solar (Gregorian) and lunar calendars with Can Chi, zodiac, solar terms, and holiday details.

Add or subtract years, months, weeks, and days from any date to find the resulting date instantly.