Write calculations naturally
A powerful desktop calculator that understands you. Type expressions like you think, convert currencies and units, and crunch financial numbers—all in real-time.
Available for Windows, macOS, and Linux.
100 + 50150
15% of 20030
100 USD in EUR91.50 EUR
5 km to miles3.107 miles
# Tax calculation
price = 15001500
price + 21%1815
# Summarization
car = 150k150 000
tax = car * 21%31 500
sum181 500
Everything you need
Powerful features in a simple, distraction-free interface.
Natural Language Input
Write calculations like you think. No need for special syntax—just type naturally.
Currency Conversion
Convert between 170+ currencies with live exchange rates. Updated automatically.
Unit Conversion
Length, weight, temperature, volume, and more. Mix and match units seamlessly.
Financial Calculations
Percentages, interest rates, ROI, NPV, and IRR. Everything you need for finance.
Real-time Results
See results as you type. Line-by-line evaluation with instant feedback.
Cross-Platform
Available for Windows, macOS, and Linux. Your calculations, anywhere.
Download Calcetta
Version 0.1.0