Load Calc Guru

Ultra-fast Manual J & Manual S without spreadsheets or clunky software.

Why contractors switch

  • Speed: Calculate room-by-room loads instantly.
  • Clean UI: Intuitive interface ready in minutes.
  • Contractor-Friendly Pricing: Free basic plan, Pro plan unlocks advanced features.

Fits into your workflow

  • Start new jobs in seconds on mobile or desktop.
  • Give it inputs you already know and let it calculate the rest.
  • Instantly calculate room-by-room loads and totals.
  • Export professional reports for customers or permits.

Pricing Comparison

Free Plan
Pro Plan
Unlimited Manual J calculations
Unlimited Manual J calculations
Smart defaults, no credit card required
Advanced inputs, multi-system splits
Basic PDF reports
Branded PDFs
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Manual S equipment checks

Start a Free Trial of the Pro Plan

https://loadcalcguru.com/sign-up

Watch 2-Min Demo Video

https://loadcalcguru.com/demo-video

One Page Pitch - Load Calc Guru