Everyday Calculators — Free & Private

A scientific calculator, percentage calculator and BMI calculator.

Runs 100% in your browser: your files and data never leave your device. No signup, no ads.

Tools in Everyday Calculators

Running & Cycling Pace Calculator: Calculate running pace, finish times, and km/mile split breakdowns for 5K, 10K, half, and full marathons.
Grade & Exam Target Calculator: Calculate weighted course grades and target exam scores required to achieve a desired final grade.
Sleep Cycle Calculator: Calculate optimal bedtime and wake-up times based on 90-minute REM sleep cycles to prevent grogginess.
Calorie & TDEE Calculator: Calculate Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) with macro breakdowns.
Scientific Calculator: Arithmetic calculations, trigonometry, square root, powers, and logarithms.
Percentage Calculator: Three common percentage problems solved instantly: of, what-percent, and change.
BMI Calculator: Estimate Body Mass Index from weight and height in metric or imperial units.
Random Picker, Dice & Coin Flip: Cryptographically random name picker, customizable multi-sided dice roller, and coin flip simulator.
Statistics Calculator: Mean, median, mode, variance, std dev, quartiles, z-scores
CPR Compression Pacer: Metronome locked to 100–120 BPM for correct CPR rate