Programming & Tech Calculators

Number bases, bitwise ops, hashes, bandwidth and storage.

16 calculators in this category.

• Aspect Ratio Calculator — Find the aspect ratio of a resolution and scale it to new dimensions.
• Bandwidth Calculator — Size the bandwidth and monthly transfer a service needs.
• Base64 Size Calculator — Calculate the encoded size and overhead of Base64 data.
• Big O Complexity Calculator — Compare how algorithm complexity classes scale with input size.
• Bitwise Calculator — Apply AND, OR, XOR, NOT and shift operations at any bit width.
• Color Contrast Calculator — Check WCAG contrast ratio between two colours for accessibility.
• Color Converter — Convert a colour between HEX, RGB, HSL and CMYK, with the equivalent values shown in every format at once.
• Download Time Calculator — Work out how long a file takes to transfer at a given connection speed.
• Hash Collision Probability Calculator — Calculate collision odds for a hash or ID space using the birthday problem.
• IEEE 754 Floating Point Calculator — See how a decimal number is stored as a 32 or 64-bit float, and its error.
• IP Subnet Calculator — Calculate network address, broadcast, mask and usable host range from CIDR.
• Number Base Converter — Convert numbers between binary, octal, decimal, hexadecimal and any base.
• Password Entropy Calculator — Measure password strength in bits of entropy and estimate crack time.
• Throughput and Latency Calculator — Apply Little’s Law to relate throughput, latency and concurrency.
• Two's Complement Calculator — Convert between signed decimal values and their binary representation.
• Uptime SLA Calculator — Convert an availability percentage into allowed downtime per day, month and year.