Convert Tonnes per Day to Pounds per Second (t/day to lb/s)
1 tonne per day (t/day) = 0.02551646553 pounds per second (lb/s). 1 lb/s = 39.19038077 t/day. Example: 15 t/day = 15 × 0.02551646553 = 0.382746983 lb/s.
Also searched as tonnes per day to lb/s, tonnes per day in lb/s, tonnes per day into pounds per second, t/day to lb/s, t/day in pounds per second, t/day into pound per second, tonne per day to pound per second, t/day to pounds per second converter and how many pounds per second in a tonne per day.
1 t/day = 0.02551646553 lb/s
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk tonne per day to pound per second converter to paste a column from Excel.
How to Convert Tonne per Day to Pound per Second
- 1 t/day = 0.02551646553 lb/s
- 1 lb/s = 39.19038077 t/day
- Example: convert 15 t/day to lb/s: 15 t/day = 15 × 0.02551646553 lb/s = 0.382746983 lb/s
Formula
lb/s = t/day × 0.02551646553066
or lb/s = t/day ÷ 39.190380768
Derivation from SI units:
- 1 t/day = 1000/86,400 kg/s.
- 1 lb/s = 0.45359237 kg/s.
- 1 t/day = 0.01157407407407 kg/s ÷ 0.45359237 kg/s per lb/s = 0.02551646553066 lb/s
Both units are defined exactly, so the factor is exact. Tonne per Day definition: tonne per day; Pound per Second definition: pound per second.
Worked examples
- A reading of 100 t/day converts to 2.551646553 lb/s.
100 t/day × 0.02551646553 = 2.551646553 lb/s - A value of 1000 t/day is 25.51646553 lb/s.
1000 t/day × 0.02551646553 = 25.51646553 lb/s
Tonne per Day to Pound per Second conversion table
| Tonnes per Day (t/day) | Pounds per Second (lb/s) |
|---|---|
| 1 t/day | 0.02551646553 lb/s |
| 10 t/day | 0.2551646553 lb/s |
| 50 t/day | 1.275823277 lb/s |
| 100 t/day | 2.551646553 lb/s |
| 300 t/day | 7.654939659 lb/s |
| 500 t/day | 12.75823277 lb/s |
| 1000 t/day | 25.51646553 lb/s |
| 2500 t/day | 63.79116383 lb/s |
| 5000 t/day | 127.5823277 lb/s |
| 10000 t/day | 255.1646553 lb/s |
Where it's used
Tonnes per Day are used for chemical and fertiliser plant capacity, while pounds per second appear in gas turbine and jet engine air flow. Both measure mass flow rate ṁ, so the conversion is a fixed factor.
Tonne per Day to other mass flow rate units
| Conversion | 1 t/day equals |
|---|---|
| tonne per day to pound per second | 0.02551646553 lb/s |
| tonne per day to kilogram per second | 0.01157407407 kg/s |
| tonne per day to kilogram per hour | 41.66666667 kg/h |
| tonne per day to tonne per hour | 0.04166666667 t/h |
| tonne per day to pound per hour | 91.85927591 lb/h |
| tonne per day to gram per second | 11.57407407 g/s |
| tonne per day to kilogram per minute | 0.6944444444 kg/min |
| tonne per day to pound per minute | 1.530987932 lb/min |
Frequently asked questions
How many pounds per second are in 1 tonne per day?
1 t/day = 0.02551646553 lb/s.
How do I convert tonnes per day to pounds per second?
Multiply the value in t/day by 0.02551646553, or divide it by 39.19038077. For example, 15 t/day × 0.02551646553 = 0.382746983 lb/s.
Is the t/day to lb/s conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units with special names).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound per second".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Tonnes per Day to Pounds per Second (t/day to lb/s). Retrieved October 29, 2026, from https://scientificconverters.com/mass-flow-rate/tonnes-per-day-to-pounds-per-second/
IEEE
Scientific Converters, "Convert Tonnes per Day to Pounds per Second (t/day to lb/s)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/mass-flow-rate/tonnes-per-day-to-pounds-per-second/