1 cubic foot per second [ft3/s] = 86400 cubic foot per day [ft3/day]
Example: 1 cubic foot per second [ft3/s] equals 86400 cubic foot per day [ft3/day].
Examples
1 cubic foot per second [ft3/s] = 86400 cubic foot per day [ft3/day]
2 cubic foot per second [ft3/s] = 172800 cubic foot per day [ft3/day]
5 cubic foot per second [ft3/s] = 432000 cubic foot per day [ft3/day]
10 cubic foot per second [ft3/s] = 864000 cubic foot per day [ft3/day]
20 cubic foot per second [ft3/s] = 1728000 cubic foot per day [ft3/day]
25 cubic foot per second [ft3/s] = 2160000 cubic foot per day [ft3/day]
Practical Uses for cubic foot per second to cubic foot per day
pumps and plumbingHVAC airflowirrigation systemsindustrial process flow
Sources and Accuracy
Flow rate conversions use cubic meter per second as the reference unit and include common pump, plumbing, HVAC, and process-flow units.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-08-14.
About These Units
cubic foot per second [ft3/s]
Definition
The cubic foot per second (ft3/s) is a flow rate unit used to express measurements in this converter.
History
This unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current use
Use cubic foot per second when comparing flow rate values, checking specifications, converting between systems, or preparing quick estimates.
cubic foot per day [ft3/day]
Definition
The cubic foot per day (ft3/day) is a flow rate unit used to express measurements in this converter.
History
This unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current use
Use cubic foot per day when comparing flow rate values, checking specifications, converting between systems, or preparing quick estimates.
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How to Convert
Enter the value in the “From value” field.
Confirm the source unit is cubic foot per second [ft3/s].
Confirm the target unit is cubic foot per day [ft3/day].
Read the instant result and formula.
Where This Conversion Is Used
pumps and plumbingHVAC airflowirrigation systemsindustrial process flow
cubic foot per second to cubic foot per day Conversion Chart
How do I convert cubic foot per second to cubic foot per day?
Use this formula: 1 cubic foot per second [ft3/s] = 86400 cubic foot per day [ft3/day] Enter your value in the calculator and the result updates instantly.
How many cubic foot per day are in 1 cubic foot per second?
1 cubic foot per second [ft3/s] equals 86400 cubic foot per day [ft3/day].
Can I reverse this conversion?
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.