Looking for the best roofing calculator app in 2025? We tested 7 popular options to help you choose. This guide covers pricing, features, and real-world performance.
Quick Answer: For most contractors, iRoofing offers the best balance of features and price. For free options, TheSiteMath provides accurate calculations without signup.
Best Roofing Calculator Apps 2025: Quick Comparison
| App | Best For | Starting Price | Offline Mode | Rating |
|---|---|---|---|---|
| iRoofing | All-in-one solution | $99/month | Yes | 4.3/5 |
| RoofSnap | Drone measurements | $139/month | Yes | 4.2/5 |
| EagleView | Aerial accuracy | $15/report | No | 4.1/5 |
| HOVER | 3D visualization | $199/month | No | 4.0/5 |
| Pitch Gauge | Pitch measurement | $9.99 one-time | Yes | 3.3/5 |
| TheSiteMath | Free web calculator | Free | No | N/A |
| Calculator.net | Basic estimates | Free | No | N/A |
1. iRoofing - Best Overall
Price: $99-149/month | Platform: iOS, Android, Web
iRoofing is our top pick for contractors who want everything in one app. It combines satellite measurements, instant estimates, and a visual roof simulator.
Pros
- Accurate satellite measurements
- Built-in proposal builder
- AI-powered roof visualizer
- Works offline after initial download
- Training and support included
Cons
- Monthly subscription adds up ($1,200+/year)
- Learning curve for new users
- Some features require higher tier
Who Should Use iRoofing?
Best for established roofing companies doing 5+ jobs per month. The ROI makes sense when you’re closing multiple deals.
Verdict: If you can afford the subscription, iRoofing saves hours per estimate. Most users report completing estimates in under 15 minutes.
2. RoofSnap - Best for Drone Users
Price: $139/month | Platform: iOS, Android, Web
RoofSnap excels at integrating drone measurements with estimating. If you already fly drones on job sites, this is your tool.
Pros
- Drone photo integration
- Configurable estimate templates
- Good for complex roof shapes
- Export to PDF and CRM systems
Cons
- Higher price point
- Drone required for best results
- Steeper learning curve
Who Should Use RoofSnap?
Contractors who already use drones or want to add drone services. The combination of aerial data and estimating tools is powerful.
3. EagleView - Best for Accuracy
Price: $15-50 per report | Platform: Web
EagleView uses aerial imagery to deliver detailed roof measurements. You don’t need to visit the property or climb the roof.
Pros
- Most accurate measurements available
- 3D property visualization
- Widely accepted by insurance companies
- No site visit needed
Cons
- Pay-per-report model adds up
- 24-48 hour turnaround time
- No offline functionality
- Not ideal for quick estimates
Who Should Use EagleView?
Insurance restoration contractors and companies that need defensible measurements. The accuracy is unmatched for complex properties.
4. HOVER - Best for 3D Visualization
Price: $199/month | Platform: iOS, Android, Web
HOVER creates 3D models of properties from smartphone photos. Show customers exactly what their new roof will look like.
Pros
- Impressive 3D visualization
- Great for customer presentations
- Works from ground-level photos
- Integrates with material suppliers
Cons
- Highest price point
- Requires good photos
- Can be slow in areas with poor coverage
Who Should Use HOVER?
Contractors who want to wow customers with visualizations. The 3D models help close sales, especially for premium materials.
5. Pitch Gauge - Best Budget App
Price: $9.99 one-time | Platform: iOS, Android
Pitch Gauge is a simple tool that measures roof pitch using your phone’s sensors. Point it at the roof and get the pitch.
Pros
- One-time purchase (no subscription)
- Simple and focused
- Works offline
- Accurate pitch readings
Cons
- Limited features (pitch only)
- No material calculations
- No estimate generation
- Basic interface
Who Should Use Pitch Gauge?
DIYers and contractors who just need quick pitch measurements. At $9.99, it’s a no-brainer addition to your toolkit.
6. TheSiteMath Roofing Calculator - Best Free Option
Price: Free | Platform: Web (mobile-friendly)
TheSiteMath offers a free, web-based roofing calculator that requires no signup or download.
Pros
- 100% free, no signup required
- Calculates materials and costs
- Works on any device
- Privacy-focused (no data stored)
- Industry-standard formulas (NRCA)
- Includes waste factor calculations
Cons
- No aerial measurements
- No proposal generation
- Web-only (needs internet)
- No CRM integration
Who Should Use TheSiteMath?
Contractors who want quick estimates without subscriptions. DIY homeowners planning roof projects. Anyone who needs a fast, accurate calculation.
Try it: Free Roofing Calculator
7. Calculator.net - Basic Free Calculator
Price: Free | Platform: Web
Calculator.net offers a basic roofing calculator for simple roof area calculations.
Pros
- Free to use
- No signup required
- Simple interface
Cons
- Limited features
- No material cost estimates
- Outdated interface
- Basic functionality only
Who Should Use Calculator.net?
Users who just need a quick roof area calculation. For more comprehensive estimates, use TheSiteMath instead.
How to Choose the Right Roofing Calculator App
Consider Your Volume
| Jobs Per Month | Recommended Tool | Why |
|---|---|---|
| 1-3 jobs | TheSiteMath (free) | No subscription cost |
| 4-10 jobs | iRoofing or RoofSnap | ROI positive at this volume |
| 10+ jobs | EagleView + iRoofing | Accuracy + efficiency |
Consider Your Needs
- Need aerial measurements? → EagleView or RoofSnap
- Need 3D visualizations? → HOVER
- Need quick estimates? → iRoofing or TheSiteMath
- On a budget? → TheSiteMath (free)
- Just need pitch? → Pitch Gauge ($10)
Consider Integration
If you use CRM software like JobNimbus or AccuLynx, check which calculators integrate directly. Most paid options offer API connections.
Cost Comparison: 1 Year of Use
| Tool | Year 1 Cost | Notes |
|---|---|---|
| TheSiteMath | $0 | Free forever |
| Pitch Gauge | $10 | One-time purchase |
| Calculator.net | $0 | Free |
| iRoofing | $1,188-1,788 | Monthly subscription |
| RoofSnap | $1,668 | Monthly subscription |
| HOVER | $2,388 | Monthly subscription |
| EagleView | $300-1,200 | Based on 20-80 reports |
Our Recommendation
For most contractors: Start with TheSiteMath’s free roofing calculator for basic estimates. If you’re doing 5+ jobs monthly, invest in iRoofing for the time savings.
For high-volume companies: Combine EagleView for measurements with iRoofing for proposals. The accuracy pays for itself.
For DIY homeowners: Use TheSiteMath. It’s free, accurate, and doesn’t require signup.
Frequently Asked Questions
What is the most accurate roofing calculator app?
EagleView provides the most accurate measurements using aerial imagery. For manual calculations, iRoofing and TheSiteMath both use industry-standard formulas that produce reliable results.
Are free roofing calculators accurate?
Yes, if they use proper formulas. TheSiteMath uses NRCA-standard pitch multipliers and waste factors. The calculations are the same formulas professional contractors use.
Do I need a paid app for roofing estimates?
Not necessarily. Free tools like TheSiteMath work well for basic estimates. Paid apps add features like aerial measurements, 3D visualization, and CRM integration that save time on larger volumes.
Can I measure roof pitch with my phone?
Yes. Pitch Gauge ($9.99) uses your phone’s sensors to measure pitch. Most paid roofing apps also include pitch measurement features.
Summary
The best roofing calculator app depends on your volume and needs. Free tools like TheSiteMath work well for occasional estimates. High-volume contractors benefit from paid options like iRoofing or EagleView.
Start here: Try our free roofing calculator — no signup required.