What formula is used for Seconds per 100 Meters to Seconds per 400 Meters?

Both units are reduced to seconds per meter and then scaled by a fixed ratio.

Is the reverse converter available?

Yes. Use the switch button or open the Seconds per 400 Meters to Seconds per 100 Meters page.

Yes. Decimal pace values are supported in the calculator.

1 Seconds per 100 Meters = 4 Seconds per 400 Meters · fixed factor via time-normalized rate definitions · no offset

1 Seconds per 100 Meters equals 4 Seconds per 400 Meters

This conversion uses a fixed factor based on time-normalized rate definitions.

For 0.8 Seconds per 100 Meters, the result equals 3.2 Seconds per 400 Meters.

Seconds per 100 Meters (s/100m)

1 Seconds per 100 Meters (s/100m) =
4 Seconds per 400 Meters (s/400m)

Multiply by 4 because 1 s/100m maps to 0.01 s/m and 1 s/400m maps to 0.0025 s/m.

For Seconds per 100 Meters to Seconds per 400 Meters, values are computed with a single fixed factor anchored to time-normalized rate definitions.

Manual spot checks match the displayed values because calculator and table share the same conversion definitions.

Method basis: Seconds per 100 Meters to Seconds per 400 Meters uses the page-specific conversion model shown in Direct Answer.
Applied factor: 1 Seconds per 100 Meters = 4 Seconds per 400 Meters (as defined for this route).
Consistency rule: calculator output and table values use the same constants and rounding policy.