Social Arithmetic Calculator - Profit Loss, Gross Net, VAT
Calculate profit and loss, profit/loss percentage, selling price, buying price, gross margin, and discount amounts. Essential business and commerce calculations for Indonesian and international contexts. Includes markup, markdown, and breakeven analysis for small business owners.
Social Arithmetic Formulas
Profit = Selling Price - Cost PriceVariables:
- CPCost Price (initial capital)Cost Price (initial capital)(e.g.: $100.00)
- SPSelling PriceSelling Price(e.g.: $120.00)
- PProfit = SP - CPProfit = SP - CP(e.g.: $20.00)
- %PProfit Percentage = P/CP × 100%Profit Percentage = P/CP × 100%(e.g.: 20%)
- GrossGross weight (container + contents)Gross weight (container + contents)(e.g.: 50 kg)
- NetNet weight (contents only)Net weight (contents only)(e.g.: 48 kg)
- TareContainer weight = Gross - NetContainer weight = Gross - Net(e.g.: 2 kg)
How to Use the Social Arithmetic Calculator
- 1
Select Calculation Type
Choose profit/loss, gross/net/tare, or sales tax (VAT).
- 2
Enter Data
Input the known values.
- 3
View Results
See the calculation result with step-by-step breakdown.
Examples
Calculating Profit
Buy an item for $80, sell for $100. What is the profit percentage?
- 1.Profit = $100 − $80 = $20
- 2.Profit % = 20/80 × 100%
- 3.Profit % = 25%
Profit is calculated from cost price (capital), not selling price.
Gross, Net, and Tare
A rice sack has gross weight 50 kg and tare 2%. What is the net weight?
- 1.Tare = 50 × 2% = 1 kg
- 2.Net = 50 − 1 = 49 kg
Price is usually based on net weight (contents only).
Price with Sales Tax
An item costs $500 before tax. Sales tax is 10%. What is the total?
- 1.Tax = $500 × 10% = $50
- 2.Total = $500 + $50
Always add tax to the pre-tax price to get the amount due at checkout.