Free Calculator Embeds for Your Website

Work out any percentage instantly — three calculators in one.

Add a percentage to a number, or find the percent increase between two values.

Subtract a percentage from a number, or find the percent decrease between two values.

See how much you save and what you pay after a percent-off discount.

Calculate the tip and split the total between any number of people.

Find the mean, median, sum, min, max, and range of a list of numbers.

Calculate your grade point average on the 4.0 scale, weighted by credits.

Convert any fraction to a decimal (and a percentage), with the simplified form.

Generate random numbers in any range — with optional unique values.

Find profit, profit margin, and markup from cost and revenue.

Add or remove VAT (or sales tax) to find the net, tax, and gross amounts.

Calculate exact age in years, months, and days between two dates.

Find the percentage difference between two values, relative to their average.

Simplify ratios and solve proportions (A : B = C : ?).

Calculate body mass index from height and weight (metric or imperial).

Add sales tax to a price, or remove it from a total.

Find the hours and minutes between times — including overnight shifts.

Add or subtract days from a date — and count the days between two dates.

See how savings grow with compound interest and regular contributions.

Estimate your daily calorie burn (TDEE) and BMR.

Find your daily calorie target to lose, maintain, or gain weight.

Estimate your body fat percentage with the U.S. Navy method.

Find standard deviation, variance, and mean for a data set.

Calculate sales commission and total pay from a sale and rate.

Compare a measured value to the true value as a percentage.

Estimate your full monthly mortgage payment — PITI, PMI, and HOA.

Monthly payment, total interest, and payoff schedule for any loan.

How much house can you afford? Based on the 28/36 DTI rule.

A complete payment-by-payment breakdown for any loan.

Estimate your car payment with trade-in and sales tax.

See how fast you'll be debt-free — and the cost of paying only the minimum.

Find the monthly amount to save to hit your target on time.

Convert between length, weight, temperature, area, volume, speed, time, and data units instantly.

A full scientific calculator — trig, logs, powers, factorials, and constants.

Days, weeks, months, and working days between two dates.

Convert times between any two cities, with a live world clock.

Count the days left until any date — with weeks and the weekday it lands on.

Strong, random passwords generated entirely in your browser.

Weighted grade average, letter grade, GPA — and the score you need on the final.

Running pace, finish time, and speed — with per-distance splits.

Turn your calorie target into daily protein, carb, and fat grams.

Find the best bedtime or wake-up time using 90-minute sleep cycles.

Calculate area in square feet for rooms and common shapes.