Time Ratio Calculator

Enter two time spans to see how many times one is of the other, the percentage relationship, and a simplified integer ratio for whole-second inputs.

Duration A

Duration B

Ratio comparisons require a non-zero Duration B. Reduced a:b output is shown when both durations resolve to whole seconds.

A compared with B

—

—Reduced A:B

—Difference A − B

—A seconds

—B seconds

Ready

How to use this Time Ratio Calculator

Enter two durations to compare A with B as a multiplier and percentage. Whole-second inputs also get a reduced A:B ratio.

Enter two time spans to see how many times one is of the other, the percentage relationship, and a simplified integer ratio for whole-second inputs.

Duration B must be non-zero. The ratio is based on fixed elapsed seconds, not calendar months or time-zone rules.