Other Calculators

Grades, time and other practical calculation tools.

Convert between Arabic and Roman numerals.

Compute network, broadcast and usable hosts from an IPv4 address and prefix.

Generate a strong password from settings and estimate its entropy.

Encode text to Base64 or decode Base64 back to text.

Encode text to percent-encoding (%XX) or decode it back.

Estimate a recommended bedtime from your wake time and sleep cycles.

Enter two names to get a fun compatibility percentage.

Calculate attendance rate from classes attended and total classes.

Calculate score percentage and points needed to reach a target.

Compute network address, broadcast address, usable hosts and range from an IPv4 address and CIDR prefix.

Estimate password entropy and strength level from length and character variety.

Enter file size and network speed to estimate transfer time in seconds and minutes.