LAUNDRY DETERGENT COST WORKSHEET
All amounts below are your observations unless explicitly marked fictional.
Compare the same currency, load size, soil level, water hardness and washer.
Read the exact product's current directions; the worksheet does not prescribe a dose.

Product/version: __________________   Price date/shop: __________________
Price after applicable discount: __________________   Currency: _______
Included/excluded tax or shipping: ____________________________________
Package net quantity: _______ Unit: mL / g / whole packets
Dose for this specific load: _______ Same unit: ________________________
Label wording or measured cap line: __________________________________
Washer / load / soil / water-hardness conditions: ______________________
Package dose equivalents = package quantity / dose: ___________________
Detergent cost per load = price * dose / package quantity: ______________
Complete doses = floor(package quantity / dose): _______________________
Remainder = quantity - complete doses * dose: ___________________________
Unrounded arithmetic: _________ Display rounding: ______________________

Repeat the block for the second product. Check fit before choosing by price.
Liquid volume is not powder mass. Convert L to mL (x1000) and kg to g (x1000).
Do not treat fluid ounces as ounces of mass or assume all ounce units match.
Concentration claims alone do not supply a dose-conversion factor.
For packets use whole label-directed counts. Do not cut or open packets.

MIXED LOADS (COUNT EACH LABEL-APPROPRIATE DOSE SEPARATELY)
Load type | number of loads | dose per load | total product used
_________ | _______________ | _____________ | ___________________
_________ | _______________ | _____________ | ___________________
Sum product used: _______    Product unit cost = price / quantity: _______
Detergent consumed cost = total product used * product unit cost: _______
Cash spent buying whole packages: _______ Product remaining: ____________
Water, energy, other products, fees and rewash costs are outside this total.

FICTIONAL USD EXAMPLES — NOT CURRENT PRICES OR REAL PRODUCT TESTS
1. Liquid A: $12, 1500 mL, 30 mL -> 50 doses and $0.24/load.
   Liquid B: $14, 1200 mL, 15 mL -> 80 doses and $0.175/load.
   At 20 identical example loads: $4.80 vs $3.50 detergent consumed.
2. Powder P: $18, 1800 g, 45 g -> 40 doses and $0.45/load.
   Powder Q: $22, 2400 g, 60 g -> 40 doses and $0.55/load.
3. Packet A: $16, 48 packets -> $0.3333.../packet.
   Packet B: $18, 60 packets -> $0.30/packet.
   At 2 packets/load: 24 loads and $0.6666... vs 30 loads and $0.60.
   Hypothetical month: 20 loads at 1 + 20 loads at 2 = 60 packets.
   Cost consumed: $20 for A vs $18 for B. Whole-package cash spending differs.

Sources for dose and storage context, not the fictional prices:
https://tide.com/en-us/how-to-wash-clothes/how-to-do-laundry/how-much-detergent-to-use
https://www.cleaninginstitute.org/packetsup