Quick answers
Direct answers to the most common sizing questions, each with the numbers, a table and the calculator ready to adjust.
Charts & cheat sheets
Wire size by amps
- What Size Wire for 15 Amps?
- What Size Wire for 20 Amps?
- What Size Wire for 30 Amps?
- What Size Wire for 30 Amps at 50 Feet?
- What Size Wire for 30 Amps at 100 Feet?
- What Size Wire for 30 Amps at 150 Feet?
- What Size Wire for 30 Amps at 200 Feet?
- What Size Wire for 40 Amps?
- What Size Wire for 40 Amps at 50 Feet?
- What Size Wire for 40 Amps at 100 Feet?
- What Size Wire for 40 Amps at 150 Feet?
- What Size Wire for 40 Amps at 200 Feet?
- What Size Wire for 50 Amps?
- What Size Wire for 50 Amps at 50 Feet?
- What Size Wire for 50 Amps at 100 Feet?
- What Size Wire for 50 Amps at 150 Feet?
- What Size Wire for 50 Amps at 200 Feet?
- What Size Wire for 60 Amps?
- What Size Wire for 60 Amps at 50 Feet?
- What Size Wire for 60 Amps at 100 Feet?
- What Size Wire for 60 Amps at 150 Feet?
- What Size Wire for 60 Amps at 200 Feet?
- What Size Wire for 70 Amps?
- What Size Wire for 100 Amps?
- What Size Wire for 100 Amps at 50 Feet?
- What Size Wire for 100 Amps at 100 Feet?
- What Size Wire for 100 Amps at 150 Feet?
- What Size Wire for 100 Amps at 200 Feet?
- What Size Wire for 125 Amps?
- What Size Wire for 150 Amps?
- What Size Wire for 200 Amps?
Watts to amps
- How Many Amps Is 500 Watts?
- How Many Amps Is 1,000 Watts?
- How Many Amps Is 1,200 Watts?
- How Many Amps Is 1,500 Watts?
- How Many Amps Is 1,800 Watts?
- How Many Amps Is 2,000 Watts?
- How Many Amps Is 2,400 Watts?
- How Many Amps Is 3,000 Watts?
- How Many Amps Is 3,500 Watts?
- How Many Amps Is 4,000 Watts?
- How Many Amps Is 4,500 Watts?
- How Many Amps Is 5,000 Watts?
- How Many Amps Is 6,000 Watts?
- How Many Amps Is 7,200 Watts?
- How Many Amps Is 9,600 Watts?
- How Many Amps Is 10,000 Watts?
Solar panels by kWh
- How Many Solar Panels for 500 kWh a Month?
- How Many Solar Panels for 750 kWh a Month?
- How Many Solar Panels for 1,000 kWh a Month?
- How Many Solar Panels for 1,250 kWh a Month?
- How Many Solar Panels for 1,500 kWh a Month?
- How Many Solar Panels for 2,000 kWh a Month?
- How Many Solar Panels for 2,500 kWh a Month?
- How Many Solar Panels for 3,000 kWh a Month?
Concrete by slab size
- How Much Concrete for a 10×10 Slab?
- How Much Concrete for a 10×12 Slab?
- How Much Concrete for a 12×12 Slab?
- How Much Concrete for a 10×20 Slab?
- How Much Concrete for a 12×20 Slab?
- How Much Concrete for a 20×20 Slab?
- How Much Concrete for a 24×24 Slab?
- How Much Concrete for a 30×30 Slab?
- How Much Concrete for a 20×40 Slab?
- How Much Concrete for a 30×40 Slab?
Battery runtime
Inverter by appliance
- What Size Inverter to Run a Refrigerator?
- What Size Inverter to Run a Microwave?
- What Size Inverter to Run a Coffee Maker?
- What Size Inverter to Run a Window Air Conditioner?
- What Size Inverter to Run a Space Heater?
- What Size Inverter to Run a TV?
- What Size Inverter to Run a CPAP Machine?
- What Size Inverter to Run a Sump Pump?
Subnet masks
- /8 Subnet Mask: 255.0.0.0
- /16 Subnet Mask: 255.255.0.0
- /19 Subnet Mask: 255.255.224.0
- /20 Subnet Mask: 255.255.240.0
- /21 Subnet Mask: 255.255.248.0
- /22 Subnet Mask: 255.255.252.0
- /23 Subnet Mask: 255.255.254.0
- /24 Subnet Mask: 255.255.255.0
- /25 Subnet Mask: 255.255.255.128
- /26 Subnet Mask: 255.255.255.192
- /27 Subnet Mask: 255.255.255.224
- /28 Subnet Mask: 255.255.255.240
- /29 Subnet Mask: 255.255.255.248
- /30 Subnet Mask: 255.255.255.252
- /31 Subnet Mask: 255.255.255.254
- /32 Subnet Mask: 255.255.255.255
AWG to mm²
Paint by room size
Appliance watts
- How Many Watts Does a Refrigerator Use?
- How Many Watts Does a Freezer Use?
- How Many Watts Does a Microwave Use?
- How Many Watts Does an Electric Oven Use?
- How Many Watts Does a Dishwasher Use?
- How Many Watts Does a Washing Machine Use?
- How Many Watts Does a Clothes Dryer Use?
- How Many Watts Does a TV Use?
- How Many Watts Does a Desktop Computer Use?
- How Many Watts Does a Laptop Use?
- How Many Watts Does a Window Air Conditioner Use?
- How Many Watts Does a Central Air Conditioner Use?
- How Many Watts Does a Space Heater Use?
- How Many Watts Does an Electric Water Heater Use?
- How Many Watts Does a Hair Dryer Use?
- How Many Watts Does a Coffee Maker Use?
- How Many Watts Does a Ceiling Fan Use?
- How Many Watts Does an LED Light Bulb Use?
- How Many Watts Does a Dehumidifier Use?
- How Many Watts Does a Sump Pump Use?
- How Many Watts Does a Pool Pump Use?
- How Many Watts Does a Gaming Console Use?
Amps to watts
Air conditioner amps by BTU
- How Many Amps Does a 5,000 BTU Air Conditioner Use?
- How Many Amps Does a 6,000 BTU Air Conditioner Use?
- How Many Amps Does a 8,000 BTU Air Conditioner Use?
- How Many Amps Does a 10,000 BTU Air Conditioner Use?
- How Many Amps Does a 12,000 BTU Air Conditioner Use?
- How Many Amps Does a 14,000 BTU Air Conditioner Use?
- How Many Amps Does a 18,000 BTU Air Conditioner Use?
- How Many Amps Does a 24,000 BTU Air Conditioner Use?
- How Many Amps Does a 36,000 BTU Air Conditioner Use?
Inverter battery current
Solar panel for a battery
3D printing filament
- 3D Printer Filament Chart: Density, Meters per kg & Temperatures
- How Many Meters of PLA Filament Are in 1 kg?
- How Many Meters of PETG Filament Are in 1 kg?
- How Many Meters of ABS Filament Are in 1 kg?
- How Many Meters of ASA Filament Are in 1 kg?
- How Many Meters of TPU Filament Are in 1 kg?
- How Many Meters of Nylon Filament Are in 1 kg?
- How Many Meters of PC Filament Are in 1 kg?
Charging time by EV model
- EV Charging Time Chart: Every Popular Model, Home vs Fast Charging
- How Long Does It Take to Charge a Tesla Model Y?
- How Long Does It Take to Charge a Tesla Model 3?
- How Long Does It Take to Charge a Tesla Cybertruck?
- How Long Does It Take to Charge a Tesla Model S?
- How Long Does It Take to Charge a Tesla Model X?
- How Long Does It Take to Charge a Chevrolet Equinox EV?
- How Long Does It Take to Charge a Chevrolet Blazer EV?
- How Long Does It Take to Charge a Chevrolet Silverado EV?
- How Long Does It Take to Charge a Ford Mustang Mach-E?
- How Long Does It Take to Charge a Ford F-150 Lightning?
- How Long Does It Take to Charge a Hyundai Ioniq 5?
- How Long Does It Take to Charge a Hyundai Ioniq 6?
- How Long Does It Take to Charge a Kia EV6?
- How Long Does It Take to Charge a Kia EV9?
- How Long Does It Take to Charge a Rivian R1S?
- How Long Does It Take to Charge a Rivian R1T?
- How Long Does It Take to Charge a BMW i4?
- How Long Does It Take to Charge a Cadillac Lyriq?
- How Long Does It Take to Charge a Honda Prologue?
- How Long Does It Take to Charge a Volkswagen ID.4?
- How Long Does It Take to Charge a Nissan Leaf?
- How Long Does It Take to Charge a Toyota bZ?
UPS runtime
Air conditioner sizing
- BTU Chart by Room Size: AC Sizing Chart (Square Feet)
- What Size AC Do I Need for 150 Square Feet?
- What Size AC Do I Need for 250 Square Feet?
- What Size AC Do I Need for 300 Square Feet?
- What Size AC Do I Need for 400 Square Feet?
- What Size AC Do I Need for 500 Square Feet?
- What Size AC Do I Need for 1,000 Square Feet?
Resistors & LEDs
- Resistor Color Code Chart (Printable)
- What Resistor Do I Need for an LED on 3.3 V?
- What Resistor Do I Need for an LED on 5 V?
- What Resistor Do I Need for an LED on 12 V?
- 220 Ohm Resistor Color Code
- 330 Ohm Resistor Color Code
- 1k Ohm Resistor Color Code
- 4.7k Ohm Resistor Color Code
- 10k Ohm Resistor Color Code
- 100k Ohm Resistor Color Code
Unit conversions
- Pressure Conversion Chart: bar, psi, kPa, atm and More
- How Many kW Is 1 hp?
- How Many kW Is 12,000 BTU?
- How Many kW Is 1 Ton of Refrigeration?
- How Many psi Is 1 bar?
- What Is 30 psi in bar?
- What Is 100 °F in Celsius?
- What Is 180 °C in Fahrenheit?
- What Is 37 °C in Fahrenheit?
- How Many mm Is 1 Inch?
- How Many mm Is 1/2 Inch?
- How Many mm Is 3/4 Inch?
- How Many Meters Is 1 Foot?
- How Many BTU Is 1 kWh?