- Fraction Calculator
- Matrix Calculator
- Slope Calculator
- Algebra Calculator
- Trigonometry Calculator
- Percentage Calculator
- Probability Calculator
-
New Value After Percent Change CalculatorFind the new value after applying a percent increase or decrease to an original number. Enter the old value and percent change to get the result instantly.
-
Percent Off CalculatorFind the discount percentage from an original price and a sale price. Instantly see the percent off and the amount you saved.
-
Markup CalculatorFree markup calculator: enter cost and markup percentage to find selling price, profit, and profit margin instantly. Simple cost-to-price formula.
-
Percent Tip CalculatorCalculate the tip and total from any bill amount and tip percentage. Split the bill between people for a clean per-person amount.
-
Sales Tax CalculatorCalculate sales tax and total price instantly. Enter a price and tax rate (%) to get the tax amount and final total. Free, fast, and accurate.
-
Three Variable Percent Equation SolverSolve the percent proportion part/whole = percent/100 for any unknown. Enter two values, pick what to solve for, and get the part, whole, or percent instantly.
-
Decrease a Number by a Percent CalculatorSubtract a percentage from any number instantly. Enter a starting number and a percent to get the reduced value, plus the exact amount of decrease.
-
Percent Change Between Two Values CalculatorFind the percent change between an original and new value instantly. Calculate percent increase or decrease with the simple (new-old)/|old| x 100 formula.
-
Discount CalculatorFree discount calculator: enter an original price and percent off to instantly find the sale price and how much money you save.
-
GST Percentage CalculatorFree GST calculator to add or remove GST at any percentage. Enter an amount and rate to get the net price, GST amount, and gross total instantly.
-
Sales Tax Backed Out of Total CalculatorBack out the sales tax from a tax-inclusive total. Enter the gross amount and tax rate to find the net price and the tax included.
-
Percent Grade to Degrees CalculatorConvert a percent grade (slope) into degrees instantly. Enter the grade % to get the slope angle in degrees and radians using arctangent.
-
Target Heart Rate Zone Percentage CalculatorCalculate your target heart rate at any exercise intensity percentage using your age and the 220-minus-age maximum heart rate formula.
-
Alcohol Proof to Percentage (ABV) CalculatorConvert US alcohol proof to percentage alcohol by volume (ABV) instantly. Just divide proof by 2 — enter the proof to get the exact ABV percentage.
-
15 Percent Tip CalculatorCalculate a 15% tip and total bill instantly. Enter your bill amount, optionally split between people, and see the tip and total per person.
-
20 Percent Off CalculatorCalculate 20% off any price instantly. Enter the original price to see the sale price and how much money you save with a 20 percent discount.
-
50% Off CalculatorCalculate 50 percent off any price instantly. Enter the original price to see the half-off sale price and how much money you save.
-
30 Percent Off CalculatorCalculate 30% off any price instantly. Enter the original price to see the discounted sale price and the exact amount you save.
-
Win Rate CalculatorCalculate your win rate percentage from wins and games played. Free win rate calculator for esports, sports, gaming and matches with instant results.
-
Original Value Before Percent Change CalculatorFind the original value before a percent increase or decrease. Enter the final value and percent change to reverse-calculate the starting amount instantly.
-
Percent Markup on Cost CalculatorCalculate percent markup on cost from your item cost and selling price. Instantly see markup %, profit per unit, and profit margin.
-
How Much Percent Decrease CalculatorFind out how much percent a value decreased. Enter the original and new value to instantly calculate the percentage decrease and absolute change.
-
Sales Tax Amount CalculatorCalculate the sales tax amount and total price from any price and tax rate. Enter the pre-tax price and percentage to see tax owed instantly.
-
Gross Profit Percentage CalculatorCalculate gross profit percentage (margin) from revenue and cost of goods sold. Instantly see gross profit and margin % with this free calculator.
