Online construction calculators, trusted by engineers
From seismic and wind loads to concrete and critical connections, jabacus replaces spreadsheets with precise, up-to-code tools so you can save time and reduce errors.
Canadian Code Compliant.
Your spreadsheets wouldn't stand up to code
Structural engineering runs on codes and standards that shift every few years. When they do, most engineers are left scrambling to update old Excel files or rebuild custom spreadsheets.
If you're still relying on spreadsheets, you're risking more than your time:
They’re clunky
Updating for code changes eats up valuable hours.
They're fragile
One wrong cell entry can throw off an entire calculation.
They age fast
Building codes evolve constantly – and keeping up is costly.
Hard to share
Is the version you're using the latest?
Leave room for risk
Outdated calculations can put projects at risk.
jabacus saves you from the spreadsheets
Get web-based calculators that are current, accurate, and built to support your structural engineering workflow. From snow loads to seismic hazards, jabacus gives you fast, reliable results — no Excel cleanup required.
Always up-to-code
jabacus calculators are always aligned with the latest engineering standards, so you don’t have to waste time rebuilding tools every time the code changes.
Faster calculations
No more hunting down old files or second-guessing Excel formulas — just input your data and get results, fast.
Access anywhere
jabacus lives in your browser — no clunky installs or version updates — so it’s ready when and where you are.
Supplements your tools
Use jabacus to supplement your primary structural software with focused, reliable tools for those quick, recurring calculations that matter.
Consider the critical calculations handled
Roof snow load calculator
Quickly determine the required roof load capacity based on your location. Stay compliant with regional codes and ensure your structure can handle snow accumulation.
Explore Calculators
Wind load calculator
Calculate wind forces on your structure with precision. Built for code compliance and local conditions, this tool ensures your designs can stand up to what’s blowing in.
Explore Calculators
Seismic hazard calculator
Evaluate earthquake risk factors in minutes. Especially critical under Ontario’s 2023 building code updates, this tool helps you design with the right seismic resistance without the extra work.
Explore Calculators
Built by engineers, trusted by engineers across Canada
Serving Canadian structural engineers since 2009.
We're saving Canadian engineers hours of work
1
Log in from anywhere
Access jabacus online — no extra software, downloads, or spreadsheets required.
2
Choose your calculator
Select from 50+ structural tools built around current Canadian codes.
3
Get instant results
Enter your data and get precise, code-compliant answers, fast.
Faster calculations, fewer errors
Join the many structural engineers already building smarter with jabacus.
Resources for structural engineers
The latest updates and go-to resources that help engineers work smarter
structural engineering
A calculator to determine the development length of concrete reinforcement for tension, compression, and standard hook conditions for both general and simplified methods.
structural engineering
A calculator to calculate the shear and friction transfer at a concrete interface for both the general and alternative equation methods.
structural engineering
A tool to find the weight of materials and calculate the weight of a building assembly. Includes a library with hundreds of materials to select from.