Take the guesswork out of ND photography. Get perfect exposures-every time.
Whether you’re smoothing waterfalls, capturing dramatic skies, or crafting cinematic motion, ND Calculator helps you nail the correct shutter speed when using Neutral Density (ND) filters.

Stack filters, track your gear, run a timer, and learn while you shoot-all in one clean, powerful, offline-friendly app.

🚀 Why ND Calculator?
ND filters are a creative powerhouse-but calculating exposure can be tricky. That’s where we come in. ND Calculator is built for real photographers, with tools that simplify the technical stuff so you can focus on creating.

📸 Features That Make a Difference
🧮 ND Filter Calculator
Set your base shutter speed, choose up to 5 stacked filters (0–24 stops, fractional included), and get your adjusted speed-instantly.
📷 Real-World Shutter Speeds
Results appear just like your camera settings: 1/500, 1/60, 2.5s, etc. No guesswork, no math.
🔁 Save Your Calculations
Lock, restore, or delete past exposures. Undo mistakes or clear everything with a tap.
🎒 Track Your Filters
Own specific filters? Mark them as "owned" and streamline your stacking workflow.
📘 Learn as You Go
Helpful onboarding, random tips, FAQs, and sample photos to boost your ND photography skills.
⏱ Built-In Long Exposure Timer
Start a countdown for bulb mode directly in the app-with haptic feedback and notifications.
📴 Works Offline
No internet? No problem. Every feature works perfectly offline-great for outdoor and remote shooting.

🌟 Built for Photographers
- Clean, modern Material Design 3 interface
- Large text and touch-friendly controls
- High-contrast mode and accessible design
- Responsive layout for phones and tablets

🔓 Go PRO
Unlock the PRO version to:
- Remove all ads
- Support future updates
- Enjoy a cleaner, uninterrupted experience

🔐 Respecting Your Privacy
We use Firebase Analytics & Crashlytics (optional, with your consent) to fix bugs and improve performance. GDPR-compliant with full user control.

Whether you're new to ND filters or a long-exposure veteran, ND Calculator is your go-to tool for every shot. Get accurate results fast, grow your skills, and shoot with confidence.

Download now and create with precision.