Free Calculators & timers tools
Quick calculators, timers and random pickers.
Loan CalculatorMonthly payment, total interest, extra payments and a full amortization schedule.Percentage CalculatorPercent of a number, percentage change, increase, decrease and difference.Age CalculatorExact age in years, months and days, days lived and next birthday.BMI CalculatorBody mass index in metric or US units with WHO categories and a healthy range.Scientific CalculatorType full expressions with trig, logs, powers, roots and factorials.GPA CalculatorUS 4.0 scale GPA with credits, weighted honors/AP courses and cumulative GPA.Online TimerCountdown timers with alarm, presets and notifications.StopwatchAccurate stopwatch with laps, splits, full screen and CSV export.Spin the WheelFair random picker wheel with weights and shareable links.Random Number GeneratorUnbiased random numbers in any range, with or without repeats.World ClockCurrent time in cities worldwide and a meeting planner across time zones.Pomodoro TimerFocus sessions and breaks with a task list and daily stats.Coin FlipFair heads or tails with a 3D coin, tally and streaks.Dice RollerRoll d4 to d100 or any notation like 3d6+2 and see the odds.