dcalc is a little CLI duration calculator handling addition and subtraction of weeks, days, hours, minutes, and seconds.

$ dcalc 5m 32s + 4m 2s
9m 34s
$ dcalc 23h + 5h
1d 4h
$ dcalc 30s + 600s
10m 30s

dcalc is written in Rust. Install dcalc with cargo install dcalc. Note that this requires Rust version 1.56 at minimum.

Contributions are welcome. Feel free to open issues or make pull requests.

dcalc is MIT licensed. See the full license in LICENSE.md.