Tools that do the math for you
Most buying mistakes come down to one number nobody checked: watt-hours, inches of headroom, feet from the wall. These free tools work it out from your own measurements, show every assumption, and run entirely in your browser.
- Backup & Off-Grid Power
Will it run my ___? Power station runtime calculator
Add your fridge, CPAP, router, lights or sump pump and get the battery size you need, with inverter losses counted, plus the stations from our guides that can carry it.
Open the power station runtime calculator - Espresso & Coffee Gear
Will it fit under my cabinets? Espresso clearance checker
Enter your counter-to-cabinet gap in inches or centimeters and see which espresso machines fit, and which you can refill without dragging them out.
Open the espresso cabinet clearance checker - Home Theater & Projectors
How big will it be? Projector throw distance calculator
Enter how far back the projector sits and how wide your wall is. See the picture size each projector makes, if it fits, how far back you need for 100 in, and if it is bright enough for your room.
Open the projector throw distance calculator
More tools are on the way for each topic. Nothing you enter is sent anywhere or saved.