The powerful text-based calculator that understands natural expressions. Currency conversion, unit math, timezones, dates, and instant results.
Powerful features wrapped in a beautiful, distraction-free interface
40+ currencies with live exchange rates. Type naturally: "150 EUR to USD" or "$500 in JPY"
299 USD to EUR
275.42
Instantly check time in any city. "time in London", "now in PST", or "3pm NYC in Tokyo"
time in Berlin
9:45 PM
Add or subtract days, weeks, months. "today + 30 days", "next friday", "90 days ago"
today + 2 weeks
Dec 14, 2025
100+ units across length, weight, volume, temperature, data, and more
72 fahrenheit in celsius
22.22
Quick percentage calculations, tips, discounts, and tax. "$150 + 20%" or "15% of 850"
$85 + 15% tip
$97.75
BMI, body fat percentage, calorie calculations, and fitness metrics
BMI 70kg, 175cm
22.86
Loan payments, compound interest, investment returns, and mortgage calculations
compound $10000 at 5% for 10 years
$16,288.95
Store results in variables, reference previous lines, and save sessions for later
price = 99.99
99.99
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The complete calculator for professionals
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Available on macOS, Windows, and Linux