Sorry. That calculator is inaccurate.
I did the dry dose calculations for you using mine. btw mine gives the exact same dosages as Rotala Butterfly | Planted Aquarium Calculators & Information
Math is math.
I am not sure of the teaspoon weight of TNC trace. According to their calculator it's about 5200 mg per teaspoon. That should be close enough for EI anyway.
In one week you will be dosing these amounts. Using the following fertilizers...
KNO3 929.4 mg (approximately 1/8 teaspoons)
KH2PO4 141.57 mg (approximately 1/32 teaspoons)
TNC Trace 452.39 mg (approximately 1/16 teaspoons)
I personally don't like dosing any dry fertilizers smaller than 1/8 teaspoon. The margin for error is quite large for very small teaspoons.
Alternatively you can make your own solutions. Make a macro and Micro solution.
Add the following to 500ml of water,
46.47 grams which is approximately 9 teaspoons of KNO3
7.1 grams which is approximately 1 1/4 teaspoons of KH2PO4
Add 22.62 grams which is approximately 4 1/4 teaspoons to 500ml of water.
Heating the water to lukewarm will help the fertilizers dissolve faster. Adding one to two teaspoons of plain white vinegar to the micro solution will help prevent mold/fungus.
Each dose is 10ml in 76 liters of water. The solutions will provide the exact same nutrients as dosing dry.