Mechanical Engineering Software

Stop doing
HVAC calculations
by hand.

CalculationX automates complex mechanical building systems calculations — fast, accurate, and professionally documented.

Explore Products → See how it works
PipeX — Pipe Pressure Drop Calculator
Calculations
Pipe Pressure Drop
Flow Velocity
Reports
Settings
Steel (Sch. 40) ▾
DN 100 mm
4.80 m³/h
75.00 m
Pressure Drop (Darcy-Weisbach)
2.47 kPa
10×
Faster than manual
3 Apps
PipeX · DuctX · HeatX
24h
Quote reply time
∞
What-if scenarios
Our Applications

Tools built for
working engineers

🔩
● Live
PipeX
Accurate pipe pressure drop calculations using Darcy-Weisbach and Hazen-Williams methods. Supports 20+ pipe materials.
  • Multiple pipe materials & schedules
  • Darcy-Weisbach & Hazen-Williams
  • Professional PDF reports
  • What-if scenario analysis
View PipeX →
💨
Coming Soon
DuctX
Fast and accurate duct pressure drop calculations for HVAC system design and verification.
  • Rectangular & circular ducts
  • Equal friction & static regain
  • Fitting loss coefficients
  • System curve generation
Join waitlist →
🌡️
Coming Soon
HeatX
Commercial and residential heat load calculations for accurate HVAC system sizing.
  • ASHRAE Manual J methodology
  • Envelope & internal gains
  • Climate zone library
  • Room-by-room breakdown
Join waitlist →
Why CalculationX

We make a real
difference to your workflow

Metric
Manual
CalculationX
Calculation time
30–90 min
~2 min
Error rate
High
Near zero
Scenario testing
Manual redo
Instant
Report quality
Spreadsheet
Professional PDF
Data integrity
Manual checks
Built-in validation
⚡
Affordable for any project size
We promise CalculationX will always be affordable — it won't add significant cost to even the smallest projects.
🔁
Consistency across your team
Every engineer on your team uses the same calculation methodology — no more discrepancies between deliverables.
📄
Professional documentation
Generate polished, client-ready calculation reports automatically — no formatting time required.
🔬
Unlimited what-if analysis
Test multiple design scenarios instantly. Compare options side-by-side without redoing any work.
Pricing

Simple, transparent
pricing

Single License
Contact
per app · one-time or subscription
  • ✓ 1 user seat
  • ✓ Full app access
  • ✓ PDF report export
  • ✓ Email support
Team License
Up to 25%
discount for 4+ seats
  • ✓ 4–10+ user seats
  • ✓ All apps bundled
  • ✓ Priority support
  • ✓ 24h quote response

Need a special quote for your large team?

We offer significant discounts on bulk orders. 20% off for 4+ apps, 25% off for 10+. More for larger quantities.