Technology Calculators
Calculators for screens, images, and digital tech — aspect ratio and pixel density.
Number of Calculators: 12
What to Know
A smaller, more specialized category: everyday tech questions (Password Generator, Password Strength, Aspect Ratio, Pixel Density) alongside networking and hardware calculators (IP Subnet, Bandwidth, RAID Capacity, Resistor Color Code) aimed at a more technical visitor.
Password Generator and Password Strength are both genuinely client-side — nothing you type or generate here is ever sent anywhere, logged, or stored, which matters more for these two calculators than almost anything else on the site. Video File Size and Streaming Data Usage round out the set for anyone planning storage or bandwidth needs ahead of time.
- Password GeneratorGenerate a strong, random password from a chosen mix of uppercase, lowercase, numbers, and symbols, with its entropy in bits and a plain-language strength rating.
- Number BaseConvert a number between binary, octal, decimal, and hexadecimal.
- IP SubnetFind the network address, broadcast address, subnet mask, and usable host range for an IPv4 address and CIDR prefix.
- Resistor Color CodeDecode a 4-band resistor color code into its resistance in ohms, kilohms, or megohms, plus its tolerance range.
- Bandwidth (Download Time)Estimate how long a file transfer will take from the file size and your connection speed.
- Internet Speed RequirementFind out how much download speed your household actually needs based on everything you do online at the same time.
- Aspect RatioFind the new height or width needed to resize an image, video, or screen while keeping the same shape.
- Pixel Density (PPI)Find a screen’s pixel density (pixels per inch) from its diagonal size and resolution.
- Video File Size / BitrateEstimate a video export's file size from its bitrate and duration, or find the bitrate needed to hit a target file size.
- Streaming Data UsageEstimate how much data your video-streaming habit uses per day, week, and month, and check it against your data cap.
- RAID Storage CapacityCalculate usable storage capacity for a RAID 0, 1, 5, 6, or 10 array.
- Password StrengthEstimate how long a password would take to crack, from its length and character types -- never enter your real password.