Free Online Tools, 100% Private

25+ everyday tools that run entirely in your browser — your data never leaves your device. No sign-up, no uploads, no tracking.

💰 Money Calculators

Monthly payment, total interest & payoff for fixed-rate loans

Grow your savings: principal + monthly contributions over time

Tip amount, total and per-person split in seconds

US state tax rates, tax amount and final checkout price

Sale price and savings for any % off — stacked deals too

Percent of a number, ratios and percent change

Body Mass Index in metric or imperial units, WHO categories

Exact age in years, months and days — plus your next birthday

Days between dates, weekdays and countdowns

Length, weight and temperature — metric ↔ imperial

Random integers in any range, with or without duplicates

Words, characters, sentences and reading time as you type

Strong random passwords, generated locally on your device

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