Caliber
The ultimate graphical calculator for STEM. 22 solver modes covering everything from basic arithmetic to university-level control systems.
C++17
Qt6
Linux
Windows
macOS
MIT License
The ultimate graphical calculator for STEM. 22 solver modes covering everything from basic arithmetic to university-level control systems.
Every calculation you'll ever need — from quick arithmetic to advanced university solvers.
Arithmetic with live expression preview and keyboard input.
Trig, logarithms, powers, constants (π, e), DEG/RAD/GRAD.
HEX/DEC/OCT/BIN, bitwise ops, 8–64 bit width, bit visualizer.
Date difference, add/subtract durations, age calculator, day of week.
13 unit categories + live currency conversion via API.
Linear, quadratic, system solver (Gaussian), matrix operations.
2D/3D plotter, polar/parametric, trace, derivative overlay, intersections.
Descriptive stats, distributions, hypothesis testing, regression, ANOVA.
Differentiation, integration, limits, Taylor series, root finder.
Compound interest, loans, NPV/IRR, percentage calculations.
Primes, GCD/LCM, modular arithmetic, base conversion, sequences.
Ohm's law, RLC circuits, voltage dividers, op-amps, dB, phasors.
Truth tables, K-maps, flip-flops, adders, MUX/DEMUX, IEEE 754.
Dot/cross products, magnitude, projection, line/plane equations.
Kinematics, energy, projectile motion, waves, thermodynamics.
Molar mass, ideal gas law, pH, dilution, thermochemistry.
Beam analysis, stress/strain, fluid mechanics, heat transfer.
Complex numbers, linear algebra, series, triangle solver, polynomials.
Graph theory (BFS/DFS/Dijkstra), combinatorics, Boolean algebra.
Asymptotic analysis, Master Theorem, floating point, formal logic.
DFT, filter design, sampling/Nyquist, convolution, transfer functions.
Transfer functions, Routh-Hurwitz, PID tuning, state space.
Built for speed, designed for power users.
See every step of equations, calculus, statistics, and vector calculations. Learn as you solve.
2D with trace, intersections, derivative overlays, and integral shading. 3D surface plotter with rotation.
9 built-in themes plus a custom gradient builder. Pick any two colors and the UI adapts automatically.
80+ searchable formulas across all modes. Per-mode filtering shows only relevant formulas.
Type directly using keyboard or numpad in Basic, Scientific, and Programming modes. No clicking needed.
Search, filter, and pin your favorite calculations. Export history to TXT or CSV.
Available for Linux, Windows, and macOS.
| Platform | Package | Install |
|---|---|---|
| Ubuntu / Debian | caliber-2.0.0.deb | sudo dpkg -i caliber-2.0.0.deb |
| Fedora / RHEL | caliber-2.0.0.rpm | sudo rpm -i caliber-2.0.0.rpm |
| Arch Linux | PKGBUILD | makepkg -si |
| Any Linux | caliber-2.0.0.tar.gz | Extract and run |
| Windows | Caliber-2.0.0-Setup.exe | Run installer |
| Windows (portable) | Caliber-2.0.0.zip | Extract and run |
| macOS | Caliber-2.0.0.dmg | Drag to Applications |