Miscellaneous

Calculate a bedtime or wake-up time using age-based sleep guidance, your schedule, and optional time to fall asleep.

Encode text to Base64 or decode Base64 to text with Unicode, Base64url, padding repair, and data URL cleanup.

Estimate a Golf Handicap Index from 3 to 20 eligible 18-hole rounds, Course Ratings, and Slope Ratings.

Calculate an added restaurant tip, final payment, and equal share per person while crediting gratuity already on the receipt.

Convert men’s, women’s, and kids’ shoe sizes between US, UK, and EU charts, or start with a measured foot length.

Estimate a starting bra size, see sister sizes, and convert it across US, UK, EU, AU/NZ, and France sizing.

Calculate weighted or total-points grades, compare completed work with a full-course projection, and find scores needed to meet a target.

Calculate term GPA and updated overall GPA with credits, GPA scale, weighted classes, and transcript rule notes.

Calculate transfer time, needed speed, or data moved with bit, byte, decimal, binary, and efficiency options.

Create a random password or passphrase, see strength in bits, and check site compatibility before you copy it.