Type it. Get it.

The calculator that understands you.

Octa
Get Octa — $25

One-time purchase. Mac, Windows, Linux.

90+ functions. Zero learning curve.

✨ Only in Octa

Natural Language

Type like you think. No syntax to learn.

twenty percent of 500=100
half of a dozen=6
triple 33=99

40+ Currencies

Live exchange rates

150 EUR to USD$162

World Clock

500+ cities

time in Tokyo2:30 AM

100+ Units

Length, weight, temp, data

5 miles in km8.05

Financial Planning

Compound interest, loan payments, ROI, CAGR

compound(10000, 7, 10)$19,672
pmt(300000, 6.5, 30)$1,896/mo

Date Math

Add days, weeks, months

today + 90 daysMar 14

Health

BMI, calories, fitness

bmi(75, 1.8)23.1

6 Themes

Dark, light, & colorful

Why Octa

More than just a calculator

See how Octa compares to other tools

Feature
Octa
Others
Written number words
6 Premium themes
Live currency rates
Timezone conversion
Date arithmetic
Health calculators
Finance tools
Cross-platform
Works offline
Pricing

One price. All features. Forever.

No subscriptions. No feature gating. Just a great calculator.

Octa

The complete calculator for professionals

$25 one-time
  • 90+ built-in functions
  • Natural language math
  • 40+ live currency rates
  • 100+ unit conversions
  • 6 premium themes
  • Health & finance calculators
  • Variables & history
  • All future updates
  • macOS, Windows & Linux
Buy Now - $25

14-day money-back guarantee. No questions asked.

Download

Get Octa for your platform

Available on macOS, Windows, and Linux

macOS Apple Silicon (M1/M2/M3)
macOS Intel
Windows 64-bit
Windows Users: You may see a SmartScreen warning since we're a new publisher. Click "More info" then "Run anyway" to proceed. We're working on getting our code signing certificate.
Linux .deb (Ubuntu/Debian)