Everyday Calculators

Karl&Sam Everyday Calculators

Quick, clean calculators for the everyday stuff — splitting a bill, working out a percentage, counting the days. Free, no signup, and nothing you type ever leaves your device.

Tip & Bill Split

Bill amount People

Tip

Custom tip %

Tip defaults to 18% — tap a chip or type your own.

Round up the per-person amount

Tip

—

Total

—

Each person pays

—

Enter the bill above to see the tip and split.

Percentage

Result

—

Date & Countdown

Result

—

100% private: every calculation runs in your browser. No uploads, no tracking.