Predict glass temperature before you run the line.

Free Quick Calc for standard float glass. Enter your email once to unlock simulations and get a link to return later.

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Quick Calc - Inputs
Results - Temperature Profile

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Top Surface
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Core
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Bottom Surface
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How It Works

Get accurate thermal predictions in three simple steps

1. Enter Parameters

Input your glass type, thickness, and furnace settings. Supports metric and imperial units.

2. Run Simulation

Our physics engine calculates conduction, convection, and radiation through the glass.

3. View Results

See surface and core temperatures over time, plus gradient warnings and risk flags.

Built for tempering now. Bending tools and multi-zone recipes available in Premium.

Simple, Transparent Pricing

Start free, upgrade when you need production features

Free Quick Calc

$0

Forever free

  • Standard float glass presets
  • Single-zone furnace model
  • Temperature vs time chart
  • Basic gradient warnings
  • No saved projects
  • No multi-zone modeling
Start Free

Premium

Contact Us

For production optimization

  • Everything in Free, plus:
  • Multi-zone top/bottom control (5+ zones)
  • Coated glass library (Low-E, mirrors, frit)
  • Export reports (CSV/PDF)
  • Reverse-calc: target exit temp
  • Saved projects + recipe comparison
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Disclaimer:

This tool provides engineering estimates and does not replace equipment supplier specifications or on-line validation. Always verify recipes on your furnace and follow manufacturer safety procedures.

Frequently Asked Questions

Everything you need to know about the Quick Calc

To prevent abuse, improve reliability, and send you a link back to your simulation results. We don't sell your email or spam you.

Free tier: Results are generated per-session and not permanently saved unless you opt in. Premium: Your projects and recipes are saved to your account for future reference.

Free: Standard float glass presets including clear, low-iron, and tinted varieties. Premium: Full coated glass library including Low-E, mirrors, and frit patterns.

Multi-zone modeling with independent top/bottom control (5+ zones) is a Premium feature. The free Quick Calc uses a single-zone ideal furnace model.

CSV and PDF exports are available in the Premium export pack. Free users can screenshot or print results from their browser.

Our model accounts for conduction, convection, and radiation heat transfer. Results typically match real furnace measurements within 5-10°C for standard glass. Always validate on your specific equipment.