Doculator — an always-on-top calculator with spreadsheet and analysis that stays out of your way
Straight into your report.
Copy variable names, unit-bearing expressions, and results in one line — ready to paste into your report.
Features
Designed to never interrupt your workflow
Expression Input
Compute unit- and label-bearing expressions like "Slab weight: 24 kN/m³ * 0.15 m = 3.60 kN/m²" as-is.
Always On Top
Stays above CAD and Word — never hidden, so you can check formulas and results while working elsewhere.
Variables
Calculate with multiple variables. Handles complex computations and equations.
Scientific Functions
√, x², xⁿ, log, ln, sin, cos, tan, x⁻¹, Exp, π — the functions engineering and science actually use.
Spreadsheet
Switch to the Sheet tab for a full spreadsheet — same window, seamless from quick notes to real aggregations.
Saved Formulas
Register frequently used expressions and recall them with a single click.
Calculation History
Browse and reuse previous calculations. The desktop version has a dedicated History tab.
Runs Locally
History and settings stay on your device. No network calls.
Desktop & Mobile
Match your work environment.
Desktop (always-on-top)
Calc / History / Sheet tabs and engineering-grade function keys in a vertical UI.
Mobile
One-handed full-keyboard layout — a simple, focused calculator.
Download Doculator
Windows
Windows 10 / 11 (x64)
Loading...macOS
macOS 11.0 or later (Apple Silicon / Intel)
Loading...Linux
Ubuntu 20.04+ / other major distros
Loading...About Windows warnings
On Windows, Chrome / Edge or SmartScreen may show a warning such as 'unknown publisher'. Doculator is code-signed, but a new certificate can trigger a temporary warning until its reputation builds. You can continue from 'More info' → 'Run' (or 'Keep') on the warning dialog. The software itself is safe. (The macOS build is notarized by Apple, so no warning appears.)
Mobile
iOS
iOS 15 or later
Coming SoonAndroid
Android 10 or later
Coming SoonBy downloading you agree to the Terms of Service and Privacy Policy.