Volumetric flow rate.
Tablespoon per Days to Gallon per Days Converter — tbsp/d to gal/d
Convert Tablespoon per Days (tbsp/d) to Gallon per Days (gal/d) using the exact conversion factor (1 tablespoon per days = 0.00390625 gallon per days). See the formula, worked examples, and conversion table.
Tablespoon per Days to Gallon per Days converter
Converter
Flow Rate Converter
Convert volumetric flow rates across metric, US, imperial, industrial, and scientific units.
Context values
Some unit families need one extra value for a physically accurate result.
Volumetric flow rate.
Result = input x 1.71143111e-10 / 4.38126364e-8.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Tablespoon per Days to Gallon per Days
Tablespoon per Days and Gallon per Days both measure volumetric flow rate — how much volume passes a point over time — used to size pipes and pumps, monitor river or stream discharge, control industrial processes, and set medical infusion rates. Both are volumetric flow rate units.
Formula
gallon per days = tablespoon per days × 0.00390625
This factor comes from each unit's defined relationship to the category's base unit: 1 tablespoon per days equals 1.711431e-10 base units, and 1 gallon per days equals 4.381264e-8 base units, so dividing one by the other gives the direct tablespoon per days-to-gallon per days factor of 0.00390625.
Simple example
1 tbsp/d × 0.00390625 = 0.00390625 gal/d
1 tablespoon per days = 0.00390625 gallon per days.
Real-world example
60 tbsp/d × 0.00390625 = 0.234375 gal/d
60 tablespoon per days = 0.234375 gallon per days.
Conversion table
| Tablespoon per Days (tbsp/d) | Gallon per Days (gal/d) |
|---|---|
| 0.1 tbsp/d | 0.000390625 gal/d |
| 1 tbsp/d | 0.00390625 gal/d |
| 10 tbsp/d | 0.0390625 gal/d |
| 60 tbsp/d | 0.234375 gal/d |
| 100 tbsp/d | 0.390625 gal/d |
| 1,000 tbsp/d | 3.90625 gal/d |
Reverse conversion: Gallon per Days to Tablespoon per Days
0.00390625 gal/d × 256 = 1 tbsp/d
0.00390625 gallon per days = 1 tablespoon per days.
tablespoon per days = gallon per days × 256
For a page dedicated to this direction, see Gallon per Days to Tablespoon per Days.
Understanding the Tablespoon per Days (tbsp/d)
Volumetric flow rate.
Understanding the Gallon per Days (gal/d)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallon per days are in 1 tablespoon per days?
1 tablespoon per days equals 0.00390625 gallon per days, using the exact defined conversion factor rather than an estimate.
How do I convert tablespoon per days to gallon per days?
Multiply the tablespoon per days value by 0.00390625. The converter above does this instantly to whatever precision you set.
How do I convert gallon per days back to tablespoon per days?
Use the reverse factor: 1 gallon per days equals 256 tablespoon per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a tablespoon per days?
Tablespoon per Days (tbsp/d) is a unit of flow rate.
What is a gallon per days?
Gallon per Days (gal/d) is a unit of flow rate.
Is the tablespoon per days to gallon per days conversion exact?
Yes. Both tablespoon per days and gallon per days are defined by fixed standards rather than physical artifacts, so the factor of 0.00390625 used above is exact to as many digits as you choose to display.
What's the difference between volumetric and mass flow rate?
Volumetric flow rate measures the volume of fluid passing a point per unit time (for example, liters per second). Mass flow rate measures the mass instead. For a fluid of constant density the two are directly proportional, but for compressible fluids like gases, mass flow is often the more meaningful quantity.