Calculators

Calculate a percentage of a value, a part’s share of a total, or the percentage change between two values. Inputs and formulas match the selected calculation.

Calculate a new width or height while keeping the aspect ratio, or simplify a ratio including decimal values.

Add, subtract, multiply or divide two fractions and see the reduced fraction, mixed number and approximate decimal.

Apply percentage discounts and fixed coupons in order. Check each step’s price and the effective total discount.

Compare unit prices using product prices, purchase quantities, package contents and shipping for the order.

Add or extract tax and calculate a separate tip on the before-tax or after-tax amount.

Settle shared expenses using what each person paid and their relative share weights. See who should transfer money to whom and how much.

Combine subscriptions with different billing cycles into a monthly average and annual cost.

Calculate per-item profit after fees, a target-profit sale price and units needed to cover fixed costs.

Compare simple and compound interest and after-tax totals using a fixed annual rate and chosen compounding frequency.

Project monthly savings or find the monthly deposit needed to reach an after-tax target, with a month-by-month breakdown.

Calculate loans and installments in one place. Check principal, interest, fees and remaining principal for each payment.

Convert hourly, daily, monthly or annual pay using your paid hours and workdays.

Calculate mean, median, modes, variance and standard deviation, or enter a weight for each value to find a weighted mean.

Calculate working hours, night hours and basic pay from clock-in/out times and actual break intervals.

Calculate combinations and permutations as exact integers, or find the probability of exactly k successes or at least one success in independent trials.

Find the remaining average needed to reach a target score or GPA and see when it is unattainable.

Scale ingredient quantities by servings or batches and optionally compare baking ratios by weight.

Calculate fuel costs from distance and fuel economy, including a return trip, tolls, parking and each person’s share.

Estimate paint cans or tile boxes from net area, product specifications and extra allowance.

Find running pace, finish time or distance and see cumulative splits including the final partial segment.