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Mass Flow Rate

lb/daytot/day

Convert pounds per day (lb/day) to metric tonnes per day (t/day).

Factor1 lb/day = 0.0004535924 t/day

Converter

lb/day

Accepts numbers or expressions, e.g. 150 + 14.7

Result
4.53592t/day

Rendered to 6 significant figures.

Formula

Formula
t/day = lb/day × 0.0004535924

Multiply any value in pounds per day by 0.0004535924 to obtain the value in metric tonnes per day.

Worked example

Convert 10000 lb/day to t/day.

  1. 01Start with 10000 lb/day.
  2. 02Multiply by the conversion factor: 10000 × 0.0004535924 = 4.53592 t/day.
Result10000 lb/day = 4.53592 t/day

Conversion table

lb/dayt/day
10.00045359
20.00090718
50.002268
100.0045359
200.0090718
500.02268
1000.045359
2000.090718
5000.2268
10000.45359

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lb/day to t/day?
1 lb/day equals 0.0004535924 t/day. To convert, multiply the value in pounds per day by 0.0004535924.
How do I convert 1 lb/day to t/day?
1 lb/day = 0.000453592 t/day. For any value, multiply by 0.0004535924.
How do I convert t/day back to lb/day?
Divide by the same factor — or equivalently, multiply by 2204.623. So 1 t/day = 2204.62 lb/day.
When would I need to convert pound per day to metric tonne per day?
Mass flow conversions between lb/day and t/day are common in material balances, process stream summaries, bulk solids handling, custody transfer, and equipment sizing where kg/hr, t/hr, lb/hr, and lb/s may all appear in different datasheets or vendor documents.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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