CalculationX brings fluid, air, structural, psychrometric, and heat exchanger analysis into one browser workspace, then carries the work into Plinth for schedules, owners, progress, and delivery reporting — and into MatOffer Pro for RFQs, supplier offers, and procurement.
Seven connected apps · Free plan available · Pro for active engineers · Enterprise for teams
Purpose-built tools for engineering workflows: model systems, identify governing conditions, capture assumptions, and coordinate the project work around them.
A visual pipe network calculator for water, glycol, oil, and other engineering systems. Draw supply and return piping, calculate pressure losses, and identify the index run.
Duct network analysis for supply, return, and exhaust systems with real fitting coefficient inputs, section-by-section losses, and critical path detection.
Modern steel frame modeling and analysis with visual editing, member force diagrams, design summaries, and report-ready results.
Interactive psychrometric analysis for HVAC processes. Resolve air states, visualize the chart, model common air-treatment processes, and export project reports.
Plate heat exchanger preliminary sizing and performance estimator. Size by geometry, recommended range, manual U, or vendor calibration, with full validation and sensitivity checks.
The delivery layer for CalculationX: organize engineering work, owners, dates, dependencies, risk, and project progress in one shared workspace.
A full procurement command center: RFQs, multi-supplier offer comparison, bills of materials, and supplier compliance — built for engineering purchasing teams running real supply chains.
No installation and no spreadsheet handoffs. Build the model, review results, plan the work, and keep delivery visible.
Create pipe networks, duct systems, frame models, psychrometric process chains, or plate heat exchanger duties with focused inputs and visual editing where it matters.
Choose fluids, sections, fittings, loads, air-state inputs, units, and project assumptions without leaving the calculation flow.
Run the calculation quickly, review critical paths, governing members, or HVAC air-state changes, and see the detailed breakdown.
Save calculations to your cloud library, export professional reports, coordinate tasks, owners, milestones, and delivery progress in Plinth, and run RFQs and supplier offers through MatOffer Pro.
Start free. Upgrade when you need higher limits, private support tickets, or team-level support.
Modern tools for engineers who want speed without losing control of the calculation.
Runs in any modern browser. No desktop install, license dongle, or heavy setup before you can start working.
Inputs, assumptions, loss breakdowns, governing paths, and result tables stay visible so engineers can review the calculation.
Your calculations are saved to your account. Access projects from any device and continue work without moving files around.
Export calculation reports with consistent formatting, clear inputs, and results ready for engineering documentation.