Percentage Calculators

• Discount in Percentages Find discount amount, percentage, or final sale price based on any two values using percentage formulas.
• Elevation from Slope Percentage Calculate vertical height difference based on a given slope percentage and horizontal length.
• Fraction to Decimal and Percent Converts a fraction to a decimal and percentage value based on the given numerator and denominator.
• Number of a Number Percentage Calculates what percent the first number is of the second number.
• Number to Percent Converts a number or decimal to its equivalent percent value.
• Part-to-Whole Percentage Calculates what percentage a part is of a total amount.
• Percent of a Percent Calculates the result when one percentage is taken from another percentage.
• Percent to Fraction Converts a percent value into its simplified fractional equivalent.
• Percentage Amount to a 100% Amount Calculates the original full amount when a portion and its percentage are known.
• Percentage Amount from a Starting Amount Calculates the dollar value that corresponds to a given percentage of a starting amount.
• Slope of a Driveway in a Percentage Calculates driveway slope as a percent grade, ratio, per mill, and angle from height and length inputs.
• Surcharge in Percentages Calculates surcharge amount, final price after surcharge, or surcharge percentage from input values.

Finance Calculators

• Compound Interest Calculates total amount and interest earned based on principal, interest rate, time, and compounding frequency.
• Debt to Income Ratio Calculates the percentage of your income used to pay debts for evaluating financial health.
• Income-Based Payment Calculates the maximum payment amount based on your income and a specified percentage allocation.
• Loan Comparison Compares monthly payment, total cost, and interest paid for a loan based on amount, term, and interest rate.

Auction Calculators

• Auction Final Amount Calculates total cost including bid price, buyer's premium, and tax for accurate auction budgeting.
• Auction Item Value Estimator Calculates the maximum bid based on market value, item condition, buyer's premium, and tax rate to avoid overpaying.
• Profit Margin and Net Profit Calculates net profit and profit margin after deducting fees, shipping, and item costs from the sale price.
• Liquidation Auction Bid Breakdown Calculates the highest bid you can place within budget after including premium, tax, and shipping costs.
• Multi-Item Auction Final Amount Calculates total cost for multiple auction items including buyer's premium and tax.

Crowd Size Calculators

• Attendance Calculates the percentage of attendees based on total population and event attendance.
• Attendance - Reverse Calculates number of attendees based on total population and attendance percentage.
• Crowd Size Estimator
• Crowd Size Estimator - Metric