Calc ProScientific Constants for iPhone & iPad
Nearly 2,000 constants at your fingertips, across mathematics, physics, the solar system, the elements, chemistry, biology, engineering, computer science and earth science. Look one up, then drop it straight into your calculation.
Take it with you
Coming soonFree with ads · In-app purchase unlocks the full Pro Premium version
Constants Features
Features marked Pro Premium unlock with the Pro Premium in-app purchase in the app. Every feature is free to use in your browser.
Mathematics and physics
π, e, the speed of light, Planck's constant and hundreds more, at full precision with units.
The elements
Browse the elements for atomic numbers, melting and boiling points, density and more.
The solar system
Data for the Sun, the planets and their moons, such as diameters, distances and orbital periods.
Five specialist categoriesPro Premium
Chemistry, biology, engineering, computer science and earth science, from the molecular weight of glucose to the depth of the Mariana Trench.
Use in calculations
Insert any constant into your calculation with a single tap.
Recently used
The constants you use most stay one tap away.
Great for
- Physics and chemistry homework
- Engineering calculations
- Astronomy
- Teaching and reference
Frequently Asked Questions
What constants does Calc Pro include?
Nearly 2,000 constants. Mathematics, physics, the solar system and the elements are included free; chemistry, biology, engineering, computer science and earth science unlock with Pro Premium.
Can I use a constant in a calculation?
Yes. Pick a constant and insert it straight into your calculation at full precision.
Is Calc Pro free?
Calc Pro is a free download on the App Store for iPhone and iPad, supported by ads. The Pro Premium in-app purchase unlocks the full version, including crypto rates, PDF export, and the newest financial worksheets, unit categories, constants and statistics tools.
Is Calc Pro available on Android?
An Android version of Calc Pro is coming soon to Google Play.
More in Calc Pro
Download Calc Pro
Calc Pro combines 10 powerful calculators with 23 financial worksheets. It's the trusted choice of students, professionals, and investors worldwide, and the only app that can truly replace your pocket calculator.
Coming soonFree with ads · In-app purchase unlocks the full Pro Premium version
Or use the Constants free in your browser