Easy to use
Enter a formula with the on-screen keyboard and press “=” to evaluate it immediately—as many times as you need.
The formula ecosystem
Every formula. Ready when you are.
Find, evaluate, create and organize mathematics, physics, chemistry, engineering and other science formulas on the web or Android.
- 1,118formulas
- Androidnative app
- Web + Appone ecosystem
1,118formulas available
Evaluatedvariables to result
Formula library
Knowledge you can use, not just browse.
The web library gives every formula its own useful destination. Search the collection, open what you need and continue your work in fCalc.
01
Significant Figures Rounding Formula
\[x_r = \frac{\text{floor}\left(x \cdot 10^{n-1-\text{floor}(\log_{10}(\text{absoluto}(x)))}\right)}{10^{n-1-\text{floor}(\log_{10}(\text{absoluto}(x)))}}\]
02
Binding Energy per Nucleon
\[E_{bn}=\frac{E_b}{A}\]
03
Square mile
\[\begin{aligned}
y[cm²] &= 2.59 \times 10^{10}x[mile²] \\
y[km²] &= 2.58999x \\
y[m²] &= 2.59 \times 10^{6}x \\
y[yard²] &= 3.098 \times 10^{6}x \\
y[foot²] &= 2.788 \times 10^{7}x \\
y[inch²] &= 4.014 \times 10^{9}x \\
y[hectare] &= 258.999x \\
y[acre] &= 640x
\end{aligned}\]
Built for real work
From formula to answer, with less friction.
fCalc keeps the essential tools for finding, calculating and organizing formulas in one focused experience.
Create your own
Build and save custom formulas for the specific calculations you repeat.
A growing formula database
Find the formula you need, use it immediately or save it to your collection of favorites.
Favorite formulas
Keep frequently used formulas ready for your next calculation without searching again.
Formula synchronization
With Premium, synchronize favorite formulas between your devices and keep them close at hand.
Evaluate multiple formulas
Calculate several formulas that share variables—or use different ones—in a single sequence and save time.
A clearer workflow
Spend time on the problem—not the setup.
Move from a formula to a reusable calculation in three direct steps.
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1
Write a formula
Type it directly with the alphabetic keyboard, scientific functions and available constants.
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2
Import a formula
Load a ready-to-use formula from the fCalc library whenever you need it.
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3
Evaluate the formula
Press “=”, then enter each variable value in sequence. Recalculate as many times as needed.
Inside fCalc
See how formulas move from input to answer.
A closer look at formula entry, library access and repeatable calculations in the Android app.
Formula input
Type a formula using the keyboard and perform the calculations immediately.
Library and evaluation
Find the formula you need in our extensive library.
Multiple calculations
Calculate a formula multiple times and save them in an infinite history.
Favorite formulas
Save your favorite formulas and share them across all your devices.
Your formulas, your way
Share formulas that help the whole community.
Contribute useful formulas to fCalc and help the public library grow into an even stronger resource for students, scientists and engineers.
Share a formula with fCalc
fCalc Premium
Keep formulas and favorites in sync.
Premium purchasers can synchronize their formulas and favorites between devices.
Cloud synchronization requires a full Premium purchase and is not included in Trial.
Frequently asked
A few useful answers.
Understand how the web library and Android app work together.
What types of formulas can be evaluated?
You can evaluate any formula with a single dependent variable solved on one side of the equation.
Can I calculate more than one formula at the same time?
Yes. fCalc can calculate a sequence of formulas, whether or not they share the same variables.
What can I do if I do not remember a formula?
Import it from fCalc’s large database of mathematical, scientific, economic and other formulas. You can also save the formulas you use most as favorites.
Is fCalc free?
Yes. fCalc is free and uses advertising to support its development. Ads can be removed permanently through an in-app purchase.
Take formulas with you
A focused formula calculator for Android.
Evaluate, save and organize the formulas you use—from study sessions to engineering work.