Free tools

Simple calculators, no account and no ads. They run entirely in your browser — nothing you type is sent anywhere.

• Download time calculatorHow long a file takes to download at your connection speed, with bits and bytes kept apart properly.
• Password strength checkerEstimate how long a password would take to brute force. Nothing leaves your browser.
• Data unit converterConvert between bits, bytes, KB, MB, GB, TB and the binary forms KiB, MiB, GiB.