🧮 Calculators
Money, health, and unit calculators. All 21 tools run free in your browser — no sign-up, no uploads.
Work out your exact age from a birth date, computed locally.
Do binary arithmetic and bitwise logic in your browser.
Calculate BMI and see your health category.
Estimate your daily calorie needs from basic stats.
See how compound interest grows your money over time.
Convert digital storage sizes in your browser.
Find out what day of the week any date falls on. Enter dates in any format (YYYY-MM-DD, MM/DD/YYYY, etc.) — one per line or comma separated — and get instant results.
Convert currencies at live exchange rates.
Work out GST or VAT on any amount.
Convert lengths between metric and imperial units in your browser.
Calculate loan payments and amortization schedule.
Estimate your monthly loan installment and total interest.
Quickly calculate the sum of any list of numbers. Paste numbers (one per line, comma-separated, or space-separated) and get instant results including total sum, count, average, minimum, and maximum values. Great for quick mental math, spreadsheet verification, and tallying.
Solve common percentage problems right in your browser.
Convert hourly wage to annual/monthly/daily salary.
Convert speeds between common units in your browser.
Convert temperatures between °C, °F and K in your browser.
Work out the tip and per-person share of a bill.
Convert volumes between metric and US cooking units in your browser.
Convert weights between metric and imperial units in your browser.
Spell out a number in English words.